Document:

Indenture

 Exhibit 4.1 
 Execution Version 
  

 
 INDENTURE 

Dated as of April 13, 2011 
 between 
 CDW ESCROW CORPORATION 

and 
 U.S. BANK
NATIONAL ASSOCIATION, 
 as Trustee 
 8.5% SENIOR NOTES DUE 2019 
  

 

 CROSS REFERENCE TABLE* 

 

					
	 Trust Indenture Act Section
	  	Indenture Section
	 310(a)(1)
	 		  	7.10
	 (a)(2)
	 		  	7.10
	 (a)(3)
	 		  	N.A.
	 (a)(4)
	 		  	N.A.
	 (a)(5)
	 		  	7.10
	 (b)
	 		  	7.10; 7.13
	 (c)
	 		  	N.A.
	 311(a)
	 		  	7.11
	 (b)
	 		  	7.11
	 (c)
	 		  	N.A.
	 312(a)
	 		  	2.09
	 (b)
	 		  	12.03
	 (c)
	 		  	12.03
	 313(a)
	 		  	7.06
	 (b)(1)
	 		  	7.06
	 (b)(2)
	 		  	7.06; 7.07
	 (c)
	 		  	7.06; 12.02
	 (d)
	 		  	7.06
	 314(a)
	 		  	4.03; 12.04; 12.05
	 (b)
	 		  	N.A.
	 (c)(1)
	 		  	12.04
	 (c)(2)
	 		  	12.04
	 (c)(3)
	 		  	N.A.
	 (d)
	 		  	N.A.
	 (e)
	 		  	12.05
	 (f)
	 		  	N.A.
	 315(a)
	 		  	7.01
	 (b)
	 		  	7.05; 12.02
	 (c)
	 		  	7.01
	 (d)
	 		  	7.01
	 (e)
	 		  	6.14
	 316(a) (last sentence)
	  	2.13
	 (a)(1)(A)
	 		  	6.05
	 (a)(1)(B)
	 		  	6.04
	 (a)(2)
	 		  	N.A.
	 (b)
	 		  	6.07
	 (c)
	 		  	2.16; 2.17; 9.04
	 317(a)(1)
	 		  	6.08
	 (a)(2)
	 		  	6.12
	 (b)
	 		  	2.08
	 318(a)
	 		  	12.01
	 (b)
	 		  	N.A.
	 (c)
	 		  	12.01

 N.A. means not applicable.

	*	This Cross-Reference Table is not part of this Indenture. 

 TABLE OF CONTENTS 

 

							
	 	  	 	  	Page	 
	
	ARTICLE I	  
	
	DEFINITIONS AND INCORPORATION BY REFERENCE	  
			
	 SECTION 1.01
	  	Definitions	  	 	1	  
	 SECTION 1.02
	  	Other Definitions	  	 	37	  
	 SECTION 1.03
	  	Incorporation by Reference of Trust Indenture Act	  	 	39	  
	 SECTION 1.04
	  	Rules of Construction	  	 	40	  
	 SECTION 1.05
	  	Acts of Holders	  	 	40	  
	 SECTION 1.06
	  	References to Agreements, Laws, Etc.	  	 	42	  
	 SECTION 1.07
	  	Times of Day	  	 	42	  
	 SECTION 1.08
	  	Timing of Payment or Performance	  	 	42	  
	
	ARTICLE II	  
	
	THE NOTES	  
			
	 SECTION 2.01
	  	Form and Dating; Terms	  	 	42	  
	 SECTION 2.02
	  	Interest Rates	  	 	43	  
	 SECTION 2.03
	  	Transferability	  	 	43	  
	 SECTION 2.04
	  	[Reserved]	  	 	44	  
	 SECTION 2.05
	  	Form and Dating	  	 	44	  
	 SECTION 2.06
	  	Execution and Authentication	  	 	44	  
	 SECTION 2.07
	  	Registrar and Paying Agent	  	 	44	  
	 SECTION 2.08
	  	Paying Agent to Hold Money in Trust	  	 	45	  
	 SECTION 2.09
	  	Holder Lists	  	 	45	  
	 SECTION 2.10
	  	Transfer and Exchange	  	 	46	  
	 SECTION 2.11
	  	Replacement Notes	  	 	47	  
	 SECTION 2.12
	  	Outstanding Notes	  	 	47	  
	 SECTION 2.13
	  	Treasury Notes	  	 	47	  
	 SECTION 2.14
	  	Temporary Notes	  	 	48	  
	 SECTION 2.15
	  	Cancellation	  	 	48	  
	 SECTION 2.16
	  	Defaulted Interest	  	 	48	  
	 SECTION 2.17
	  	[Reserved]	  	 	48	  
	 SECTION 2.18
	  	CUSIP/ISIN Numbers	  	 	49	  
	 SECTION 2.19
	  	Calculation of Principal Amount of Notes	  	 	49	  
	 SECTION 2.20
	  	Effectiveness of Indenture	  	 	49	  
	 SECTION 2.21
	  	Registered Exchange Offer	  	 	49	  
	
	ARTICLE III	  
	
	REDEMPTION	  
			
	 SECTION 3.01
	  	Notices to Trustee	  	 	49	  
	 SECTION 3.02
	  	Selection of Notes to Be Redeemed	  	 	50	  
	 SECTION 3.03
	  	Notice of Redemption	  	 	50	  
	 SECTION 3.04
	  	Effect of Notice of Redemption	  	 	51	  

  
 -i-

							
	 	  	 	  	Page	 
			
	 SECTION 3.05
	  	Deposit of Redemption Price	  	 	51	  
	 SECTION 3.06
	  	Notes Redeemed in Part	  	 	52	  
	 SECTION 3.07
	  	Optional Redemption	  	 	52	  
	 SECTION 3.08
	  	Mandatory Redemption	  	 	53	  
	 SECTION 3.09
	  	Offer to Purchase	  	 	53	  
	 SECTION 3.10
	  	Special Mandatory Redemption	  	 	54	  
	
	ARTICLE IV	  
	
	COVENANTS	  
			
	 SECTION 4.01
	  	Payment of Notes	  	 	55	  
	 SECTION 4.02
	  	Maintenance of Office or Agency	  	 	55	  
	 SECTION 4.03
	  	Reports and Other Information	  	 	56	  
	 SECTION 4.04
	  	Compliance Certificate	  	 	57	  
	 SECTION 4.05
	  	Taxes	  	 	57	  
	 SECTION 4.06
	  	Stay, Extension and Usury Laws	  	 	57	  
	 SECTION 4.07
	  	Limitation on Restricted Payments	  	 	58	  
	 SECTION 4.08
	  	Dividend and Other Payment Restrictions Affecting Restricted Subsidiaries	  	 	65	  
	 SECTION 4.09
	  	Limitation on Incurrence of Indebtedness and Issuance of Preferred Stock	  	 	66	  
	 SECTION 4.10
	  	Asset Sales	  	 	72	  
	 SECTION 4.11
	  	Transactions with Affiliates	  	 	74	  
	 SECTION 4.12
	  	Liens	  	 	76	  
	 SECTION 4.13
	  	Issuers Existence	  	 	76	  
	 SECTION 4.14
	  	Offer to Repurchase Upon Change of Control	  	 	76	  
	 SECTION 4.15
	  	Additional Guarantees	  	 	77	  
	 SECTION 4.16
	  	Limitation of Activities of FinanceCo	  	 	77	  
	 SECTION 4.17
	  	Limitation on Business Activities	  	 	77	  
	 SECTION 4.18
	  	Further Instruments and Acts	  	 	78	  
	 SECTION 4.19
	  	Suspension of Covenants	  	 	78	  
	 SECTION 4.20
	  	Activities of Escrow Issuer Prior to Release Date and Assumption	  	 	79	  
	 SECTION 4.21
	  	Escrow of Proceeds	  	 	79	  
	 SECTION 4.22
	  	Release Conditions	  	 	79	  
	
	ARTICLE V	  
	
	SUCCESSORS	  
			
	 SECTION 5.01
	  	Merger, Consolidation or Sale of All or Substantially All Assets	  	 	80	  
	 SECTION 5.02
	  	Successor Corporation Substituted	  	 	81	  
	
	ARTICLE VI	  
	
	DEFAULTS AND REMEDIES	  
			
	 SECTION 6.01
	  	Events of Default	  	 	81	  
	 SECTION 6.02
	  	Acceleration	  	 	83	  
	 SECTION 6.03
	  	Other Remedies	  	 	84	  

  
 -ii-

							
	 	  	 	  	Page	 
			
	 SECTION 6.04
	  	Waiver of Past Defaults	  	 	85	  
	 SECTION 6.05
	  	Control by Majority	  	 	85	  
	 SECTION 6.06
	  	Limitation on Suits	  	 	85	  
	 SECTION 6.07
	  	Rights of Holders of Notes to Receive Payment	  	 	85	  
	 SECTION 6.08
	  	Collection Suit by Trustee	  	 	86	  
	 SECTION 6.09
	  	Restoration of Rights and Remedies	  	 	86	  
	 SECTION 6.10
	  	Rights and Remedies Cumulative	  	 	86	  
	 SECTION 6.11
	  	Delay or Omission Not Waiver	  	 	86	  
	 SECTION 6.12
	  	Trustee May File Proofs of Claim	  	 	86	  
	 SECTION 6.13
	  	Application of Funds	  	 	87	  
	 SECTION 6.14
	  	Undertaking for Costs	  	 	87	  
	
	ARTICLE VII	  
	
	TRUSTEE	  
			
	 SECTION 7.01
	  	Duties of Trustee	  	 	88	  
	 SECTION 7.02
	  	Rights of Trustee	  	 	89	  
	 SECTION 7.03
	  	Individual Rights of Trustee	  	 	90	  
	 SECTION 7.04
	  	Trustee’s Disclaimer	  	 	90	  
	 SECTION 7.05
	  	Notice of Defaults	  	 	90	  
	 SECTION 7.06
	  	Reports by Trustee to Holders of the Notes	  	 	90	  
	 SECTION 7.07
	  	Compensation and Indemnity	  	 	91	  
	 SECTION 7.08
	  	Replacement of Trustee	  	 	91	  
	 SECTION 7.09
	  	Successor Trustee by Merger, Etc.	  	 	92	  
	 SECTION 7.10
	  	Eligibility; Disqualification	  	 	92	  
	 SECTION 7.11
	  	Preferential Collection of Claims Against Issuers	  	 	92	  
	
	ARTICLE VIII	  
	
	LEGAL DEFEASANCE AND COVENANT DEFEASANCE	  
			
	 SECTION 8.01
	  	Option to Effect Legal Defeasance or Covenant Defeasance	  	 	93	  
	 SECTION 8.02
	  	Legal Defeasance and Discharge	  	 	93	  
	 SECTION 8.03
	  	Covenant Defeasance	  	 	93	  
	 SECTION 8.04
	  	Conditions to Legal or Covenant Defeasance	  	 	94	  
	 SECTION 8.05
	  	Deposited Money and Government Securities to Be Held in Trust; Other Miscellaneous Provisions	  	 	95	  
	 SECTION 8.06
	  	Repayment to Issuers	  	 	96	  
	 SECTION 8.07
	  	Reinstatement	  	 	96	  
	
	ARTICLE IX	  
	
	AMENDMENT, SUPPLEMENT AND WAIVER	  
			
	 SECTION 9.01
	  	Without Consent of Holders of Notes	  	 	96	  
	 SECTION 9.02
	  	With Consent of Holders of Notes	  	 	97	  
	 SECTION 9.03
	  	Revocation and Effect of Consents	  	 	99	  
	 SECTION 9.04
	  	Notation on or Exchange of Notes	  	 	99	  
	 SECTION 9.05
	  	Trustee to Sign Amendments, Etc.	  	 	99	  

  
 -iii-

							
	 	  	 	  	Page	 
	
	ARTICLE X	  
	
	GUARANTEES	  
			
	 SECTION 10.01
	  	Guarantee	  	 	100	  
	 SECTION 10.02
	  	Limitation on Guarantor Liability	  	 	102	  
	 SECTION 10.03
	  	Execution and Delivery	  	 	102	  
	 SECTION 10.04
	  	Subrogation	  	 	102	  
	 SECTION 10.05
	  	Severability	  	 	103	  
	 SECTION 10.06
	  	Guarantors May Consolidate, Etc., on Certain Terms	  	 	103	  
	 SECTION 10.07
	  	Benefits Acknowledged	  	 	104	  
	 SECTION 10.08
	  	Release of Guarantees	  	 	105	  
	 SECTION 10.09
	  	Contribution	  	 	105	  
	
	ARTICLE XI	  
	
	SATISFACTION AND DISCHARGE	  
			
	 SECTION 11.01
	  	Satisfaction and Discharge	  	 	106	  
	 SECTION 11.02
	  	Application of Trust Money	  	 	106	  
	
	ARTICLE XII	  
	
	MISCELLANEOUS	  
			
	 SECTION 12.01
	  	Trust Indenture Act Controls	  	 	107	  
	 SECTION 12.02
	  	Notices	  	 	107	  
	 SECTION 12.03
	  	Communication by Holders of Notes with Other Holders of Notes	  	 	108	  
	 SECTION 12.04
	  	Certificate and Opinion as to Conditions Precedent	  	 	108	  
	 SECTION 12.05
	  	Statements Required in Certificate or Opinion	  	 	108	  
	 SECTION 12.06
	  	Rules by Trustee and Agents	  	 	109	  
	 SECTION 12.07
	  	No Personal Liability of Directors, Officers, Employees and Stockholders	  	 	109	  
	 SECTION 12.08
	  	Governing Law	  	 	109	  
	 SECTION 12.09
	  	Waiver of Jury Trial	  	 	109	  
	 SECTION 12.10
	  	Force Majeure	  	 	109	  
	 SECTION 12.11
	  	No Adverse Interpretation of Other Agreements	  	 	109	  
	 SECTION 12.12
	  	Successors	  	 	109	  
	 SECTION 12.13
	  	Severability	  	 	110	  
	 SECTION 12.14
	  	Counterpart Originals	  	 	110	  
	 SECTION 12.15
	  	Table of Contents, Headings, Etc.	  	 	110	  
	 SECTION 12.16
	  	Waiver of Immunities	  	 	110	  

  

			
		
	Schedule I	  	Payments and Agreements in Effect on the Closing Date
	Appendix A	  	Provisions Relating to the Initial Notes and Exchange Notes
		
	EXHIBITS	  	
	Exhibit A	  	Form of Note
	Exhibit B	  	Form of Notational Guarantee
	Exhibit C	  	Form of Transferee Letter of Representation

  
 -iv-

							
	 	  	 	  	Page	 
			
	Exhibit D	  	Form of Supplemental Indenture to Be Delivered by Subsequent Guarantors	  			
	Exhibit E	  	Form of Assumption Supplemental Indenture	  			

  
 -v-

 This INDENTURE (this “Indenture”), dated as of April 13, 2011, is
between CDW Escrow Corporation, a Delaware corporation (the “Escrow Issuer”), and U.S. Bank National Association, a national banking association, as trustee (in such capacity, the “Trustee”). Prior to the
consummation of the Assumption, the term “Issuers” refers to the Escrow Issuer. After the consummation of the Assumption, the term “Issuers” refers only to CDW LLC, an Illinois limited liability company
(“CDW”), and CDW Finance Corporation, a Delaware corporation (“FinanceCo”). 
 W
I T N E S S E T H 
 WHEREAS, the Escrow Issuer has duly
authorized the creation of and issue of $725,000,000 of 8.5% Senior Notes due 2019 (the “Initial Notes”) to be issued and authenticated under this Indenture; and 

WHEREAS, the Escrow Issuer has duly authorized the execution and delivery of this Indenture. 

NOW, THEREFORE, the Escrow Issuer and the Trustee agree as follows for the benefit of each other and for the equal and ratable benefit of
the Holders of the Notes. 
 ARTICLE I 
 DEFINITIONS AND INCORPORATION BY REFERENCE 
 SECTION 1.01
Definitions. 
 “ABL Facility” means that certain Revolving Loan Credit Agreement, dated as of the
Closing Date, among VH MergerSub, Inc., CDW LLC (as successor in interest to CDW Corporation), JPMorgan Chase Bank, N.A., as Administrative Agent and Lehman Brothers Inc., Morgan Stanley Senior Funding, Inc. and Deutsche Bank Securities Inc.,
as Co-Syndication Agents, the lenders party thereto and certain other parties specified therein, providing revolving loans and other extensions of credit, including any related notes, debentures, bonds, guarantees, collateral documents, instruments
and agreements executed in connection therewith, and in each case as amended, restated, supplemented, modified, renewed, refunded, replaced (whether at maturity or thereafter) or refinanced from time to time in one or more agreements, indentures,
notes, bonds, facilities or other forms of indebtedness in whole or in part (in each case with the same or new agents, lenders or investors), including any agreement adding or changing the borrower or issuer or any guarantor or extending the
maturity thereof or otherwise restructuring all or any portion of the Indebtedness thereunder or increasing the amount loaned or issued thereunder or altering the maturity thereof (provided that such increase in borrowings is permitted under
Section 4.09). 
 “Acquired Debt” means, with respect to any specified Person: 

(1) Indebtedness of any other Person existing at the time such other Person is merged with or into or became a Restricted
Subsidiary of such specified Person, including Indebtedness incurred in connection with, or in contemplation of, or to provide all or any portion of the funds or credit support utilized in connection with, such other Person merging with or into, or
becoming a Restricted Subsidiary of, such specified Person; and 
 (2) Indebtedness secured by an existing Lien
encumbering any asset acquired by such specified Person. 

 “Additional Interest” means such additional interest payable pursuant to
Section 2(d) of the Registration Rights Agreement. 
 “Affiliate” of any specified Person means any other
Person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person. For purposes of this definition, “control” (including, with correlative meanings, the terms
“controlling,” “controlled by” and “under common control with”), as used with respect to any Person, means the possession, directly or indirectly, of the power to direct or cause the direction of
the management or policies of such Person, whether through the ownership of voting securities, by agreement or otherwise. 

“Agent” means any Registrar or Paying Agent. 
 “Applicable Premium” means, with respect to any Note on any applicable Redemption Date, the greater of: 

(a) 1% of the then outstanding principal amount of such Note; and 

(b) the excess, if any, of: (1) the present value at such Redemption Date of (i) the redemption price of the
Note at April 1, 2015 (such redemption price being set forth in Section 3.07(b) hereof), plus (ii) all required interest payments due on the Note through April 1, 2015 (excluding accrued but unpaid interest to the
Redemption Date), computed using a discount rate equal to the Treasury Rate as of such Redemption Date plus 50 basis points; over (2) the then outstanding principal amount of the Note. 

The Applicable Premium will be calculated by the Issuers. 
 “Asset Sale” means (i) the sale, conveyance, transfer, lease (as lessor) or other voluntary disposition (whether in a single transaction or a series of related transactions) of
property or assets (including by way of a Sale and Lease-Back Transaction) of CDW (other than the sale of Equity Interests of CDW) or any of its Restricted Subsidiaries (each referred to in this definition as a “disposition”) or
(ii) the issuance or sale of Equity Interests of any Restricted Subsidiary (whether in a single transaction or a series of related transactions), in each case, other than: 

(1) a disposition of Cash Equivalents or Investment Grade Securities or obsolete, damaged or worn out property or
equipment in the ordinary course of business or inventory (or other assets) held for sale in the ordinary course of business and dispositions of property no longer used or useful in the conduct of the business of CDW and its Restricted Subsidiaries
or the disposition of inventory in the ordinary course of business; 
 (2) the disposition of all or
substantially all of the assets of CDW in a manner permitted pursuant to Section 5.01 hereof or any disposition that constitutes a Change of Control; 

(3) the making of any Restricted Payment or Permitted Investment that is permitted to be made, and is made, pursuant to
Section 4.07 hereof or the granting of a Lien permitted by Section 4.12 hereof; 
 (4)
any disposition of assets or issuance or sale of Equity Interests of any Restricted Subsidiary (other than directors’ qualifying shares or shares required by applicable law to be held by a Person other than CDW or a Restricted Subsidiary) in
any transaction or series of transactions with an aggregate fair market value of less than $25,000,000; 

  
 -2-

 (5) any disposition of property or assets or issuance of securities by a
Restricted Subsidiary to CDW or by CDW or a Restricted Subsidiary to another Restricted Subsidiary; 
 (6) the
sale, lease, assignment, sublease, license or sublicense of any real or personal property in the ordinary course of business; 
 (7) any issuance or sale of Equity Interests in, or Indebtedness or other securities of, an Unrestricted Subsidiary; 

(8) foreclosures on assets or transfers by reason of eminent domain; 

(9) disposition of an account receivable in connection with the collection or compromise thereof in the ordinary course of
business or in bankruptcy or similar proceedings and exclusive of factoring or similar arrangements; 
 (10)
sales of accounts receivable, or participations therein, in connection with any Receivables Facility; 
 (11) the
issuance by a Restricted Subsidiary of Disqualified Stock or Preferred Stock that is permitted pursuant to Section 4.09 hereof; 
 (12) any financing transaction with respect to property built or acquired by CDW or any Restricted Subsidiary after the Release Date, including Sale and Lease-Back Transactions and Receivables Facility
financings permitted under this Indenture; 
 (13) transfers of property subject to casualty or condemnation
proceedings (including in lieu thereof) upon the receipt of the net cash proceeds therefor; 
 (14) the
abandonment of intellectual property rights in the ordinary course of business, which in the reasonable good faith determination of CDW or a Restricted Subsidiary are not material to the conduct of the business of CDW and its Restricted Subsidiaries
taken as a whole; 
 (15) voluntary terminations of Hedging Obligations; 

(16) any Permitted Asset Swap; and 

(17) Sale and Lease-Back Transactions involving (i) real property owned on the Release Date, (ii) property
acquired not more than 180 days prior to such Sale and Lease-Back Transaction for cash in an amount at least equal to the cost of such property and (iii) other property for cash consideration if the sale is treated as an Asset Sale. 

“Asset Sale Offer” has the meaning set forth under Section 4.10(a). 

“Assumption” means the consummation of the transactions whereby (a) CDW and FinanceCo will assume all of the
obligations of the Escrow Issuer under the Indenture and the Notes pursuant to a supplemental indenture in the form of Exhibit E hereto, (b) each of the Guarantors will guarantee the Notes, (c) the Issuers and the Guarantors will deliver
the Registration Rights Agreement, and (d) the Escrow Issuer is released from the obligations under this Indenture. 

  
 -3-

 “Bankruptcy Law” means Title 11, U.S. Code or any similar federal, state
or foreign law for the relief of debtors. 
 “Beneficial Owner” has the meaning assigned to such term in
Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial ownership of any particular “person” (as that term is used in Section 13(d)(3) of the Exchange Act), such “person”
will be deemed to have beneficial ownership of all securities that such “person” has the right to acquire by conversion or exercise of other securities, whether such right is currently exercisable or is exercisable only upon the occurrence
of a subsequent condition. The terms “Beneficially Owns,” “Beneficially Owned” and “Beneficial Ownership” have a corresponding meaning. 

“Board of Directors” means: 
 (1) with respect to a corporation, the board of directors of the corporation; 
 (2) with respect to a partnership, the board of directors of the general partner of the partnership; and 
 (3) with respect to any other Person, the board or committee of such Person serving a similar function. 
 “Board Resolution” means a copy of a resolution certified by the Secretary or an Assistant Secretary of CDW or any Restricted Subsidiary to have been duly adopted by the Board of
Directors, unless the context specifically requires that such resolution be adopted by a majority of the disinterested directors, in which case by a majority of such directors, and to be in full force and effect on the date of such certification and
delivered to the Trustee. 
 “Business Day” means each day which is not a Legal Holiday. 

“Calculation Date” has the meaning set forth in the definition of “Fixed Charge Coverage Ratio.” 

“Capital Stock” means: 
 (1) in the case of a corporation, capital stock; 
 (2) in the case
of an association or business entity, any and all shares, interests, participations, rights or other equivalents (however designated) of capital stock; 
 (3) in the case of a partnership or limited liability company, partnership or membership interests (whether general or limited); and 

(4) any other interest or participation that confers on a Person the right to receive a share of the profits and losses
of, or distributions of assets of, the issuing Person. 
 “Capitalized Lease Obligation” means, at the time any
determination thereof is to be made, the amount of the liability in respect of a capital lease that would at such time be required to be capitalized and reflected as a liability on a balance sheet (excluding the footnotes thereto) prepared in
accordance with GAAP (except for temporary treatment of construction-related expenditures under ASC 840-40, “Sale-Leaseback Transactions,” which will ultimately be treated as operating leases or occupancy agreements upon a Sale and
Lease-Back Transaction). 

  
 -4-

 “Cash Contribution Amount” means the aggregate amount of cash
contributions made to the capital of CDW or any other Guarantor described in the definition of “Contribution Indebtedness.” 
 “Cash Equivalents” means: 
 (1) U.S. dollars;

 (2)(i) Sterling, Canadian Dollars, Euro, or any national currency of any participating member state of the
economic and monetary union contemplated by the Treaty on European Union; or 
 (ii) in the case of CDW or a
Restricted Subsidiary, such local currencies held by them from time to time in the ordinary course of business; 

(3) securities issued or directly and fully and unconditionally guaranteed or insured by the U.S. government or any agency
or instrumentality thereof the securities of which are unconditionally guaranteed as a full faith and credit obligation of such government with maturities of 24 months or less from the date of acquisition; 

(4) certificates of deposit, time deposits and Eurodollar time deposits with maturities of one year or less from the date
of acquisition, bankers’ acceptances with maturities not exceeding one year and overnight bank deposits, in each case with (i) any lender under the ABL Facility or the Senior Secured Term Loan or an Affiliate thereof or (ii) any
commercial bank having capital and surplus of not less than $250,000,000 in the case of U.S. banks and $100,000,000 (or the U.S. Dollar Equivalent as of the date of determination) in the case of non-U.S. banks; 

(5) repurchase obligations for underlying securities of the types described in clauses (3) and (4) above entered
into with any financial institution meeting the qualifications specified in clause (4) above; 
 (6)
commercial paper rated P-1 by Moody’s or A-1 by S&P and in each case maturing within 24 months after the date of creation thereof; 
 (7) marketable short-term money market and similar securities having a rating of P-1 or A-1 from either Moody’s or S&P, respectively (or, if at any time neither Moody’s nor S&P shall be
rating such obligations, an equivalent rating from another Rating Agency) and in each case maturing within 24 months after the date of creation thereof; 
 (8) investment funds investing 95% of their assets in securities of the types described in clauses (1) through (7) above; 

(9) readily marketable direct obligations issued by any state, commonwealth or territory of the United States or any
political subdivision or taxing authority thereof having an Investment Grade Rating from either Moody’s or S&P with maturities of 24 months or less from the date of acquisition; 

(10) Investments with average maturities of 12 months or less from the date of acquisition in money market
funds rated A- (or the equivalent thereof) or better by S&P or A3 (or the equivalent thereof) or better by Moody’s: 

  
 -5-

 (11) shares of investment companies that are registered under the Investment
Company Act of 1940 and substantially all the investments of which are one or more of the types of securities described in clauses (1) through (10) above; and 

(12) in the case of any Foreign Subsidiary, investments of comparable tenure and credit quality to those described in the
foregoing clauses (1) through (11) above or other high quality short term investments, in each case, customarily utilized in countries in which such Foreign Subsidiary operates for short term cash management purposes. 

Notwithstanding the foregoing, Cash Equivalents shall include amounts denominated in currencies other than those set forth in clauses
(1) and (2) above, provided that such amounts are converted into any currency listed in clauses (1) and (2) as promptly as practicable and in any event within ten (10) Business Days following the receipt of such
amounts. 
 “Cash Management Obligations” means Obligations under any facilities or services related to cash
management, including treasury, depository, overdraft, credit or debit card, automated clearing house fund transfer services, purchase card, electronic funds transfer (including non-card e-payables services) and other cash management arrangements
and commercial credit card and merchant card services. 
 “Cash Pooling Arrangements” means a deposit account
arrangement among a single depository institution, CDW and one or more Foreign Subsidiaries involving the pooling of cash deposits in and overdrafts in respect of one or more deposit accounts (each located outside of the United States and any States
and territories thereof) with such institution by CDW and such Foreign Subsidiaries for cash management purposes. 

“CDW” has the meaning provided in the introductory paragraph of this Indenture. 

“Change of Control” means the occurrence of any of the following: 

(1) the sale, lease, transfer or other conveyance, in one or a series of related transactions, of all or substantially all
of the assets of CDW and its Subsidiaries, taken as a whole, to any Person other than to a Permitted Holder; 

(2) the acquisition by any Person or group (within the meaning of Section 13(d)(3) or
Section 14(d)(2) of the Exchange Act, or any successor provision), including any group acting for the purpose of acquiring, holding or disposing of securities (within the meaning of Rule 13d-5(b)(1) under the Exchange Act), other
than the Permitted Holders, in a single transaction or in a related series of transactions, by way of merger, consolidation or other business combination or purchase of Beneficial Ownership, directly or indirectly, of 50% or more of the total voting
power of the Voting Stock of CDW or any of its direct or indirect parent entities, including, without limitation, Parent; 
 (3) the first day on which the majority of the Board of Directors of CDW then in office shall cease to consist of Continuing Directors; or 

(4) the adoption of a plan relating to the liquidation or dissolution of CDW. 

“Change of Control Offer” means an Offer to Purchase required to be made pursuant to Section 4.14 hereof to all
holders. 

  
 -6-

 “Closing Date” means October 12, 2007. 

“Code” means the United States Internal Revenue Code of 1986, as amended from time to time, and the regulations
promulgated and rulings issued thereunder. Section references to the Code are to the Code, as in effect on the Release Date, and any subsequent provisions of the Code, amendatory thereof, supplemental thereto or substituted therefor.

 “Commission” means the U.S. Securities and Exchange Commission. 

“Common Stock” of any Person means Capital Stock in such Person that does not rank prior, as to the payment of dividends
or as to the distribution of assets upon any voluntary or involuntary liquidation, dissolution or winding up of such Person, to Capital Stock of any other class in such Person. 

“Consolidated Depreciation and Amortization Expense” means, with respect to any Person for any period, the total amount
of depreciation and amortization expense, including the amortization of deferred financing fees, and other non-cash charges (excluding any non-cash item that represents an accrual or reserve for a cash expenditure for a future period) of such Person
and its Restricted Subsidiaries for such period on a consolidated basis and otherwise determined in accordance with GAAP. 

“Consolidated Interest Expense” means, with respect to any Person for any period, without duplication, the sum of:

 (a) consolidated interest expense of such Person and its Restricted Subsidiaries for such period, to the
extent such expense was deducted (and not added back) in computing Consolidated Net Income (including (i) amortization of original issue discount resulting from the issuance of Indebtedness at less than par, (ii) all commissions, discounts
and other fees and charges owed with respect to letters of credit or bankers acceptances, (iii) non-cash interest expense (but excluding any non-cash interest expense attributable to the movement in the mark-to-market valuation of Hedging
Obligations or other derivative instruments pursuant to GAAP), (iv) the interest component of Capitalized Lease Obligations, (v) net payments, if any, pursuant to interest rate Hedging Obligations with respect to Indebtedness,
(vi) net losses on Hedging Obligations or other derivative instruments entered into for the purpose of hedging interest rate risk and (vii) costs of surety bonds in connection with financing activities, and excluding (x) amortization
of deferred financing fees, debt issuance costs, commissions, fees and expenses, (y) any expensing of bridge, commitment and other financing fees and (z) commissions, discounts, yield and other fees and charges (including any interest
expense) related to any Receivables Facility); plus 
 (b) consolidated capitalized interest of such Person and
its Restricted Subsidiaries for such period, whether paid or accrued; less 
 (c) interest income of such Person
and its Restricted Subsidiaries for such period. 
 For purposes of this definition, interest on a Capitalized Lease Obligation
shall be deemed to accrue at an interest rate reasonably determined by CDW to be the rate of interest implicit in such Capitalized Lease Obligation in accordance with GAAP. 

  
 -7-

 “Consolidated Net Income” means, with respect to any Person for any
period, the aggregate of the Net Income of such Person and its Restricted Subsidiaries for such period, on a consolidated basis, and otherwise determined in accordance with GAAP; provided, however, that (without duplication),

 (a) any pro forma after-tax effect (using a reasonable estimate based on applicable tax rates) of
extraordinary, non-recurring or unusual gains or losses (less all fees and expenses relating thereto) or expenses, severance, integration costs, relocation costs, transition costs, other restructuring costs, litigation settlement or losses and
curtailments or modifications to pension and post-retirement employee benefit plans shall be excluded, provided that, solely for the purpose of determining the amount available for Restricted Payments under clause (3) of the first
paragraph of Section 4.07 hereof, such losses, costs, charges or other expenses shall be excluded only to the extent they are non-cash and will not require cash settlement in the future, 

(b) the Net Income for such period shall not include the cumulative effect of a change in accounting principles during
such period, 
 (c) any pro forma after-tax effect (using a reasonable estimate based on applicable tax rates) of
income (loss) from disposed or discontinued operations and any net after-tax gains or losses on disposal of disposed, abandoned or discontinued operations shall be excluded, 

(d) any pro forma after-tax effect (using a reasonable estimate based on applicable tax rates) of gains or losses (less
all accrued fees and expenses relating thereto) attributable to asset dispositions other than in the ordinary course of business, as determined in good faith by CDW, shall be excluded, 

(e) the Net Income for such period of any Person that is not a Subsidiary, or is an Unrestricted Subsidiary, or that is
accounted for by the equity method of accounting, shall be excluded; provided, that Consolidated Net Income of such Person shall be (A) increased by the amount of dividends or distributions or other payments that are actually paid in
cash (or to the extent converted into cash) to such Person or a Subsidiary thereof that is CDW or a Restricted Subsidiary in respect of such period (subject in the case of dividends paid or distributions made to a Restricted Subsidiary (other than a
Guarantor) to the limitations contained in clause (f) below) and (B) decreased by the amount of any equity of CDW in a net loss of any such Person for such period to the extent CDW has funded such net loss in cash with respect to such
period, 
 (f) solely for the purpose of determining the amount available for Restricted Payments under clause
(3) of the first paragraph of Section 4.07 hereof, the Net Income for such period of any Restricted Subsidiary (other than any Guarantor) shall be excluded if the declaration or payment of dividends or similar distributions by that
Restricted Subsidiary of its Net Income is not wholly permitted at the date of determination without any prior governmental approval (which has not been obtained) or, directly or indirectly, by the operation of the terms of its charter or any
agreement, instrument, judgment, decree, order, statute, rule, or governmental regulation applicable to that Restricted Subsidiary or its stockholders, unless such restriction with respect to the payment of dividends or similar distributions has
been legally waived, provided, that Consolidated Net Income of CDW will be, subject to the exclusion contained in clause (e) above, increased by the amount of dividends or other distributions or other payments actually paid in cash (or
to the extent converted into cash) to CDW or a Restricted Subsidiary thereof (subject to the provisions of this clause (f)) in respect of such period, to the extent not already included therein, 

  
 -8-

 (g) effects of purchase accounting adjustments (including the effects of
such adjustments pushed down to such Person and such Subsidiaries) in component amounts required or permitted by GAAP, resulting from the application of purchase accounting in relation to any consummated acquisition or the amortization or write-up,
write-down or write-off of any amounts thereof, net of taxes, shall be excluded, 
 (h) any pro forma after-tax
effect (using a reasonable estimate based on applicable tax rates) of income (loss) from the early extinguishment of Indebtedness or Hedging Obligations or other derivative instruments, in each case to the extent permitted hereunder, shall be
excluded, 
 (i) any pro forma after-tax effect (using a reasonable estimate based on applicable tax rates)
impairment charge or asset write-off, write-up or write-down (other than write-offs or write-downs of inventory or receivables), in each case, pursuant to GAAP and the amortization of assets or liabilities, including intangibles arising (including
goodwill and organizational costs) pursuant to GAAP shall be excluded, 
 (j) any pro forma after-tax effect
(using a reasonable estimate based on applicable tax rates) of non-cash compensation or other expense recorded from grants of stock appreciation or similar rights, stock options, restricted stock or other rights or as a result of the Krasny Plan
shall be excluded, 
 (k) in connection with the operation of the Krasny Plan, (i) tax withholding payments
made in cash to the United States Internal Revenue Service in connection with in-kind withholding for payments to participants in Equity Interests of any indirect or direct parent of CDW shall be excluded; provided that the maximum add-back
to Consolidated Net Income shall be no greater than $1,000,000 in any four quarter period; and (ii) payments made in cash to the Circle of Service Foundation, Inc. in an amount not in excess of the amount of the net tax benefit to CDW as a
result of the implementation and continuing operation of the Krasny Plan shall be excluded, and 
 (l) any fees
and expenses incurred during such period, or any amortization thereof for such period, in connection with any acquisition, Investment, Disposition, dividend or similar Restricted Payments, issuance or repayment of Indebtedness, issuance of Equity
Interests, refinancing or recapitalization transaction or amendment or modification of any debt instrument (in each case, including any such transaction consummated prior to the Closing Date and any such transaction undertaken but not completed) and
any charges or non-recurring merger costs incurred during such period as a result of any such transaction shall be excluded. 

Notwithstanding the foregoing, for the purpose of Section 4.07 hereof only, there shall be excluded from Consolidated Net
Income any income arising from any sale or other disposition of Restricted Investments made by CDW and its Restricted Subsidiaries, any repurchases and redemptions of Restricted Investments made by CDW and its Restricted Subsidiaries, any repayments
of loans and advances which constitute Restricted Investments made by CDW and any Restricted Subsidiary, any sale of the stock of an Unrestricted Subsidiary or any distribution or dividend from an Unrestricted Subsidiary, in each case only to the
extent such amounts increase the amount of Restricted Payments permitted under clause (3)(d) of the first paragraph of Section 4.07 hereof. 
 “Consolidated Secured Debt Ratio” means, as of any date of determination, the ratio of (a) consolidated total Indebtedness of CDW and its Restricted Subsidiaries on the date of
determination that constitutes Secured Indebtedness or any Indebtedness under the Existing Inventory Financing Agreement to (b) the aggregate amount of EBITDA for the then most recent four full fiscal quarters for which internal financial
statements of CDW and its Restricted Subsidiaries are available in each case with such pro forma adjustments to such consolidated total Indebtedness and EBITDA as are consistent with the pro forma adjustment provisions set forth in the definition of
Fixed Charge Coverage Ratio. 

  
 -9-

 “Contingent Obligations” means, with respect to any Person, any obligation
of such Person guaranteeing or having the economic effect of guaranteeing any leases, dividends or other obligations that do not constitute Indebtedness (“primary obligations”) of any other Person (the “primary
obligor”) in any manner, whether directly or indirectly, including, without limitation, any obligation of such Person, whether or not contingent, 
 (i) to purchase any such primary obligation or any property constituting direct or indirect security therefor, 
 (ii) to advance or supply funds 
 (A) for the purchase or payment
of any such primary obligation, or 
 (B) to maintain working capital or equity capital of the primary obligor or
otherwise to maintain the net worth or solvency of the primary obligor, 
 (iii) to purchase property, securities or services
primarily for the purpose of assuring the owner of any such primary obligation of the ability of the primary obligor to make payment of such primary obligation against loss in respect thereof, or 

(iv) as an account party with respect to any letter of credit, letter of guaranty or bankers’ acceptance. 

“Continuing Directors” means, as of any date of determination, individuals who (i) were members of such Board of
Directors on the Closing Date or (ii) were either (x) nominated for election or elected to such Board of Directors with the approval of a majority of the Continuing Directors who were members of such Board of Directors at the time of
nomination or election, (y) appointed, approved or recommended by a majority of the then Continuing Directors or (z) designated or appointed by a Permitted Holder. 
 “Contribution Indebtedness” means Indebtedness of CDW or any Guarantor in an aggregate principal amount not greater than one times the aggregate amount of cash contributions (other than
Excluded Contributions) made to the capital of CDW or such Guarantor after the Closing Date; provided that: 
 (1) if the aggregate principal amount of such Contribution Indebtedness is greater than one times such cash contribution amount to the capital of CDW or such Guarantor, as applicable, the amount of such
excess shall be (a) Subordinated Indebtedness (other than Secured Indebtedness) and (b) Indebtedness with a Stated Maturity equal to or later than the Stated Maturity of the Notes, and 

(2) such cash contribution amount is not applied to make Restricted Payments. 

“Corporate Trust Office of the Trustee” shall be at the address of the Trustee specified in Section 12.02
hereof or such other address as to which the Trustee may give notice to the Holders and CDW. 
 “Covenant Suspension
Event” has the meaning set forth under Section 4.19. 

  
 -10-

 “Custodian” means the Trustee, as custodian with respect to the Notes,
each in global form, or any successor entity thereto. 
 “Default” means any event that is, or with the passage
of time or the giving of notice or both would be, an Event of Default. 
 “Definitive Note” means a
certificated Note issued (bearing the Restricted Notes Legend if the transfer of such Note is restricted by applicable law) that does not include the Global Notes Legend. 
 “Depository” means, with respect to the Notes issuable or issued in whole or in part in global form, any Person specified in Section 2.07 hereof as the Depository with respect
to the Notes, and any and all successors thereto appointed as Depository hereunder and having become such pursuant to the applicable provision of this Indenture. 
 “Designated Non-cash Consideration” means the fair market value of non-cash consideration received by CDW or any of its Restricted Subsidiaries in connection with an Asset Sale that is so
designated as Designated Non-cash Consideration pursuant to an Officers’ Certificate setting forth the basis of such valuation, less the amount of cash or Cash Equivalents received in connection with a subsequent sale of such Designated
Non-cash Consideration. 
 “Designated Preferred Stock” means Preferred Stock of CDW or any direct or indirect
parent company of CDW (other than Disqualified Stock of CDW), that is issued for cash (other than to Parent or any of its Subsidiaries or an employee stock ownership plan or trust established by CDW or any of its Subsidiaries) and is so designated
as Designated Preferred Stock, pursuant to an Officers’ Certificate, on the issuance date thereof, the cash proceeds of which are excluded from the calculation set forth in clause (3)(b) of the first paragraph of Section 4.07
hereof. 
 “Disqualified Stock” means, with respect to any Person, any Capital Stock of such Person which, by
its terms (or by the terms of any security into which it is convertible or for which it is putable or exchangeable), or upon the happening of any event, matures or is mandatorily redeemable (other than as a result of a change of control or asset
sale) pursuant to a sinking fund obligation or otherwise, or is redeemable at the option of the holder thereof (other than as a result of a change of control or asset sale), in whole or in part, in each case prior to the earlier of the Maturity Date
or the date the Notes are no longer outstanding; provided, however, that if such Capital Stock is issued to any plan for the benefit of employees of CDW or any of its Subsidiaries or by any such plan to such employees, such Capital
Stock shall not constitute Disqualified Stock solely because it may be required to be repurchased by CDW or any of its Subsidiaries in order to satisfy applicable statutory or regulatory obligations. 

“Domestic Subsidiaries” means, with respect to any Person, any subsidiary of such Person other than a Foreign
Subsidiary. 
 “EBITDA” means, with respect to any Person for any period, the Consolidated Net Income of such
Person and its Restricted Subsidiaries for such period 
 (a) increased (without duplication) by: 

(i) provision for taxes based on income or profits or capital (or any alternative tax in lieu thereof), including, without
limitation, foreign, state, franchise and similar taxes and foreign withholding taxes of such Person and such subsidiaries paid or accrued during such period deducted (and not added back) in computing Consolidated Net Income, including payments made
pursuant to any tax sharing agreements or arrangements among CDW, its Restricted Subsidiaries and any direct or indirect parent company of CDW (so long as such tax sharing payments are attributable to the operations of CDW and its Restricted
Subsidiaries); plus 

  
 -11-

 (ii) Fixed Charges of such Person and such subsidiaries for such period to
the extent the same was deducted (and not added back) in calculating such Consolidated Net Income; plus 

(iii) Consolidated Depreciation and Amortization Expense of such Person and such subsidiaries for such period to the
extent the same were deducted (and not added back) in computing Consolidated Net Income; plus 
 (iv) any
fees, costs, commissions, expenses or other charges (other than Depreciation or Amortization Expense) related to any Equity Offering, Permitted Investment, acquisition, disposition, recapitalization or the incurrence or repayment of Indebtedness
permitted to be incurred under this Indenture (including a refinancing thereof) (whether or not successful), including (w) any expensing of bridge, commitment or other financing fees, (x) such fees, costs, commissions, expenses or other
charges related to the offering of the Notes, the Senior Secured Notes, the Existing Senior Notes, the Senior Subordinated Notes, the Senior Bridge Loan Agreement, the Senior Subordinated Bridge Loan Agreement, the ABL Facility and the Senior
Secured Term Loan, (y) any such fees, costs (including call premium), commissions, expenses or other charges related to any amendment or other modification of the Notes, the Senior Secured Notes, the Existing Senior Notes, the Senior
Subordinated Notes, the Senior Bridge Loan Agreement, the Senior Subordinated Bridge Loan Agreement, the ABL Facility and the Senior Secured Term Loan and (z) commissions, discounts, yield and other fees and charges (including any interest
expense) related to any Receivables Facility, and, in each case, deducted (and not added back) in computing Consolidated Net Income; plus 
 (v) any other non-cash charges, expenses or losses including any write-offs or write-downs and any non-cash expense relating to the vesting of warrants, reducing Consolidated Net Income for such period
(provided that if any such non-cash charges represent an accrual or reserve for potential cash items in any future period, the cash payment in respect thereof in such future period shall be subtracted from EBITDA in such future period to the
extent paid, and excluding amortization of a prepaid cash item that was paid in a prior period); plus 

(vi) the amount of management, monitoring, consulting, transaction and advisory fees and related expenses paid in such
period to the Sponsors pursuant to the Management Agreement (as in effect on the Closing Date) deducted (and not added back) in computing Consolidated Net Income; plus 

(vii) the amount of loss on sale of receivables and related assets to the Receivables Subsidiary in connection with a
Receivables Facility deducted (and not added back) in computing Consolidated Net Income; plus 
 (viii)
costs or expense deducted (and not added back) in computing Consolidated Net Income by such Person or any such subsidiary pursuant to any management equity plan or stock option plan or any other management or employee benefit plan or agreement or
any stock subscription or shareholder agreement, to the extent that such cost or expenses are funded with cash proceeds contributed to the capital 

  
 -12-

 
of CDW or net cash proceeds of an issuance of Equity Interest of CDW (other than Disqualified Stock) solely to the extent that such net cash proceeds are excluded from the calculation of the
amount available for Restricted Payments under clause (3) of the first paragraph of Section 4.07 hereof; plus 
 (ix) the amount of net cost savings and acquisition synergies projected by CDW in good faith to be realized during such period (calculated on a pro forma basis as though such cost savings had been
realized on the first day of such period) as a result of specified actions taken or initiated in connection with any acquisition or disposition by CDW or any Restricted Subsidiary, net of the amount of actual benefits realized during such period
that are otherwise included in the calculation of EBITDA from such actions; provided that (A) such cost savings are reasonably identifiable and factually supportable, (B) such actions are taken within 18 months after the date of
such acquisition or disposition and (C) the aggregate amount of costs savings added pursuant to this clause (ix) shall not exceed the greater of (x) $50,000,000 and (y) 10% of CDW’s EBITDA for the period of four consecutive
fiscal quarters most recently ended prior to the determination date; plus 
 (x) any net after-tax
non-recurring, extraordinary or unusual gains or losses (less all fees and expenses relating thereto) or expenses; plus 
 (xi) to the extent covered by insurance and actually reimbursed or otherwise paid, or, so long as CDW has made a determination that there exists reasonable evidence that such amount will in fact be
reimbursed or otherwise paid by the insurer and only to the extent that such amount is (i) not denied by the applicable carrier in writing within 180 days and (ii) in fact reimbursed or otherwise paid within 365 days of the date of such
evidence (with a deduction for any amount so added back to the extent not so reimbursed or otherwise paid within such 365 days), expenses with respect to liability or casualty events and expenses or losses relating to business interruption;
plus 
 (xii) expenses to the extent covered by contractual indemnification or refunding provisions in
favor of CDW or a Restricted Subsidiary and actually paid or refunded, or, so long as CDW has made a determination that there exists reasonable evidence that such amount will in fact be paid or refunded by the indemnifying party or other obligor and
only to the extent that such amount is (A) not denied by the applicable indemnifying party or obligor in writing within 90 days and (B) in fact reimbursed within 180 days of the date of such evidence (with a deduction for any amount so
added back to the extent not so reimbursed within such 180 days); plus 
 (xiii) any non-cash increase in
expenses (A) resulting from the revaluation of inventory (including any impact of changes to inventory valuation policy methods) or (B) due to purchase accounting associated with any future acquisitions; 

(b) decreased by (without duplication) non-cash gains increasing Consolidated Net Income of such Person and such
subsidiaries for such period, excluding any non-cash gains to the extent they represent the reversal of an accrual or reserve for a potential cash item that reduced EBITDA in any prior period; and 

  
 -13-

 (c) increased or decreased by (without duplication): 

(i) any net gain or loss resulting in such period from Hedging Obligations and the application of Statement of Financial
Accounting Standards No. 133 and International Accounting Standards No. 39 and their respective related pronouncements and interpretations; plus or minus, as applicable, 

(ii) any net gain or loss included in calculating Consolidated Net Income resulting in such period from currency
translation gains or losses related to currency remeasurements of indebtedness (including any net loss or gain resulting from hedge agreements for currency exchange risk). 
 “Equity Interests” means Capital Stock and all warrants, options or other rights to acquire Capital Stock (but excluding any debt security that is convertible into, or exchangeable for,
Capital Stock). 
 “Equity Offering” means any public or private sale of Common Stock or Preferred Stock of CDW
or any of its direct or indirect parent companies (excluding Disqualified Stock of such entity), other than (i) public offerings with respect to Common Stock of CDW or of any of its direct or indirect parent companies registered on
Form S-4 or Form S-8, (ii) any such public or private sale that constitutes an Excluded Contribution or (iii) an issuance to any Subsidiary of CDW. 
 “Escrow Account” has the meaning set forth under Section 4.21. 
 “Escrow Agent” means U.S. Bank National Association, as escrow agent under the Escrow Agreement or any successor escrow agent as set forth in the Escrow Agreement. 

“Escrow Agreement” means the Escrow Agreement to be dated as of the Issue Date, among the Escrow Issuer, Parent, the
Trustee and the Escrow Agent, as amended, supplemented, modified, extended, renewed, restated or replaced in whole or in part from time to time. 
 “Escrow End Date” means the Issue Date. 
 “Escrow
Proceeds” has the meaning set forth under Section 4.21. 
 “Exchange Act” means the
Securities Exchange Act of 1934, as amended, and the rules and regulations of the Commission promulgated thereunder. 

“Exchange Notes” means the notes issued in exchange for the Notes pursuant to Section 2.21 hereof.

 “Excess Proceeds” has the meaning set forth in Section 4.10(a). 

“Excluded Contribution” means net cash proceeds, marketable securities or Qualified Proceeds, in each case received by
CDW and its Restricted Subsidiaries from: 
 (1) contributions to its common equity capital; and 

(2) the sale (other than to a Subsidiary or to any management equity plan or stock option plan or any other management or
employee benefit plan or agreement of CDW or any Subsidiary) of Capital Stock (other than Disqualified Stock and Designated Preferred Stock), 

  
 -14-

 in each case designated as Excluded Contributions pursuant to an Officers’ Certificate on the date
such capital contributions are made or the date such Equity Interests are sold, as the case may be, which are excluded from the calculation set forth in clause (3)(c) of the first paragraph of Section 4.07 hereof. 

“Existing Inventory Financing Agreements” means the following agreements, in each case, as amended, supplemented,
refinanced, refunded or otherwise modified and in effect from time to time: (i) that certain Inventory Financing Agreement, dated as of the Closing Date, by and among GE Commercial Distribution Finance Corporation, CDW Logistics, Inc., an
Illinois corporation, CDW Technologies, Inc. (f/k/a Berbee Information Networks Corporation), a Wisconsin corporation, CDW Government LLC (as successor in interest to CDW Government, Inc.), an Illinois limited liability company, and CDW Direct, LLC,
an Illinois limited liability company, and (ii) that certain Agreement for Inventory Financing, dated as of the Closing Date, by and among IBM Credit LLC, a Delaware limited liability company, CDW Logistics, Inc., an Illinois corporation, and
CDW Technologies, Inc., a Wisconsin corporation. 
 “Existing Senior Note Indenture” means that certain senior
exchange note indenture dated as of October 10, 2008, as supplemented by the senior exchange note supplemental indenture dated May 10, 2010, as further supplemented by the second senior exchange note supplemental indenture dated
August 23, 2010, and as further supplemented by the third senior exchange note supplemental indenture dated March 7, 2011 among CDW, FinanceCo, the guarantors party thereto and U.S. Bank National Association, as trustee. 

“Existing Senior Notes” means, collectively, the Issuers’ 11.00% senior exchange notes due 2015 and 11.50%/12.25%
senior PIK election exchange notes due 2015, in such amounts as are outstanding after giving effect to the Tender Offer. 

“FinanceCo” has the meaning provided in the introductory paragraph of this Indenture. 

“Fixed Charge Coverage Ratio” means, with respect to any Person for any period consisting of such Person and its
Restricted Subsidiaries’ most recently ended four fiscal quarters for which internal financial statements are available, the ratio of EBITDA of such Person for such period to the Fixed Charges of such Person for such period. In the event that
CDW or any Restricted Subsidiary incurs, assumes, guarantees or repays any Indebtedness or issues or redeems Disqualified Stock or Preferred Stock, in each case subsequent to the commencement of the period for which the Fixed Charge Coverage Ratio
is being calculated but prior to the event for which the calculation of the Fixed Charge Coverage Ratio is made (the “Calculation Date”), then the Fixed Charge Coverage Ratio shall be calculated giving pro forma effect to such
incurrence, assumption, guarantee or repayment of Indebtedness, or such issuance or redemption of Disqualified Stock or Preferred Stock, as if the same had occurred at the beginning of the applicable four-quarter period and as if CDW or Restricted
Subsidiary had not earned the interest income actually earned during such period in respect of such cash used to repay, repurchase, defease or otherwise discharge such Indebtedness. 

If Investments, acquisitions, dispositions, mergers or consolidations have been made by CDW or any Restricted Subsidiary during the
four-quarter reference period or subsequent to such reference period and on or prior to or simultaneously with the Calculation Date, then the Fixed Charge Coverage Ratio shall be calculated on a pro forma basis assuming that all such Investments,
acquisitions, dispositions, mergers or consolidations (and the change in any associated Fixed Charge obligations and the change in EBITDA resulting therefrom) had occurred on the first day of the four-quarter reference period. 

  
 -15-

 If since the beginning of such period any Person (that subsequently became a Restricted
Subsidiary or was merged with or into CDW or any Restricted Subsidiary since the beginning of such period) shall have made any Investment, acquisition, disposition, merger or consolidation that would have required adjustment pursuant to this
definition, then the Fixed Charge Coverage Ratio shall be calculated giving pro forma effect thereto for such period as if such Investment, acquisition, disposition, merger or consolidation had occurred at the beginning of the applicable
four-quarter period. 
 For purposes of this definition, whenever pro forma effect is to be given to an Investment, acquisition,
disposition, merger or consolidation and the amount of income or earnings relating thereto, the pro forma calculations shall be determined in good faith by a responsible financial or accounting Officer of CDW and shall comply with the requirements
of Rule 11-02 of Regulation S-X promulgated by the Commission, except that such pro forma calculations may include operating expense reductions for such period resulting from the transaction which is being given pro forma effect that
(A) have been realized or (B) for which the steps necessary for realization have been taken (or are taken concurrently with such transaction) or (C) for which the steps necessary for realization are reasonably expected to be taken
within the 18-month period following such transaction and, in each case, including, but not limited to, (a) reduction in personnel expenses, (b) reduction of costs related to administrative functions, (c) reduction of costs related to
leased or owned properties and (d) reductions from the consolidation of operations and streamlining of corporate overhead, provided that in each case such adjustments are set forth in an Officers’ Certificate signed by CDW’s
chief financial officer and another Officer which states (i) the amount of such adjustment or adjustments, (ii) in the case of items (B) or (C) above, that such adjustment or adjustments are based on the reasonable good faith
beliefs of the Officers executing such Officers’ Certificate at the time of such execution and (iii) that any related incurrence of Indebtedness is permitted pursuant to this Indenture. If any Indebtedness bears a floating rate of interest
and is being given pro forma effect, the interest on such Indebtedness shall be calculated as if the rate in effect on the Calculation Date had been the applicable rate for the entire period (taking into account any Hedging Obligations applicable to
such Indebtedness if the related hedge has a remaining term in excess of twelve months). 
 Interest on a Capitalized Lease
Obligation shall be deemed to accrue at the interest rate reasonably determined by a responsible financial or accounting officer of CDW to be the rate of interest implicit in such Capitalized Lease Obligation in accordance with GAAP. For purposes of
making the computation referred to above, interest on any Indebtedness under a revolving credit facility computed on a pro forma basis shall be computed based upon the average daily balance of such Indebtedness during the applicable period. Interest
on Indebtedness that may optionally be determined at an interest rate based upon a factor of a prime or similar rate, a Eurocurrency interbank offered rate, or other rate, shall be deemed to have been based upon the rate actually chosen, or, if
none, then based upon such optional rate chosen as CDW may designate. 
 “Fixed Charges” means, with respect to
any Person for any period, the sum of, without duplication, (a) Consolidated Interest Expense (excluding amortization/accretion of original issue discount (including any original issue discount created by fair value adjustments to Indebtedness
in existence as of the Release Date as a result of purchase accounting)) of such Person for such period and (b) all cash dividends paid during such period (excluding items eliminated in consolidation) on any series of Preferred Stock or
Disqualified Stock of such Person and its Subsidiaries. 
 “Foreign Subsidiary” means, with respect to any
Person, (a) any subsidiary of such Person that is organized and existing under the laws of any jurisdiction outside the United States of America or (b) any subsidiary of such Person that has no material assets other than the Capital Stock
of one or more subsidiaries described in clause (a) and other assets relating to an ownership interest in any such Capital Stock or subsidiaries. 

  
 -16-

 “GAAP” means generally accepted accounting principles in the United States
in effect on the Release Date, except for any reports required to be delivered pursuant to Section 4.03 hereof, which shall be prepared in accordance with GAAP in effect on the date thereof. At any time after the Release Date, CDW may
elect to apply International Financial Reporting Standards (“IFRS”) accounting principles in lieu of GAAP and, upon any such election, references herein to GAAP shall thereafter be construed to mean IFRS (except as otherwise
provided in this Indenture); provided that any such election, once made, shall be irrevocable; provided, further, any calculation or determination in this Indenture that requires the application of GAAP for periods that include
fiscal quarters ended prior to CDW’s election to apply IFRS shall remain as previously calculated or determined in accordance with GAAP. CDW shall give notice of any such election made in accordance with this definition to the Trustee and the
holders of Notes. For purposes of this Indenture, the term “consolidated” with respect to any Person means such Person consolidated with its Restricted Subsidiaries and does not include any Unrestricted Subsidiary. 

“Global Note” means a permanent global Note in definitive, fully registered form. 

“Governmental Authority” shall mean the government of the United States of America or any other nation, any political
subdivision thereof, whether state or local, and any agency, authority, instrumentality, regulatory body, court, central bank or other entity exercising executive, legislative, judicial, taxing, regulatory or administrative powers or functions of or
pertaining to government. 
 “guarantee” means a guarantee other than by endorsement of negotiable instruments
for collection in the ordinary course of business, direct or indirect, in any manner, including, without limitation, through letters of credit or reimbursement agreements in respect thereof, of all or any part of any Indebtedness or other
obligations. When used as a verb, “guarantee” shall have a corresponding meaning. 
 “Guarantee”
means any guarantee of the obligations of CDW under this Indenture and the Notes by a Guarantor in accordance with the provisions of this Indenture. When used as a verb, “Guarantee” shall have a corresponding meaning. 

“Guarantor” means any Person that incurs a Guarantee of the Notes; provided that upon the release and discharge
of such Person from its Guarantee in accordance with this Indenture, such Person shall cease to be a Guarantor. On the Release Date, the Guarantors will be Parent and each Domestic Subsidiary of CDW that is a Restricted Subsidiary and a guarantor
under the Senior Secured Term Loan. 
 “Hedging Obligations” means, with respect to any Person, the obligations
of such Person under: 
 (1) currency exchange, interest rate or commodity swap agreements, currency exchange,
interest rate or commodity cap agreements and currency exchange, interest rate or commodity collar agreements; and 
 (2) other agreements or arrangements designed to manage, hedge or protect such Person with respect to fluctuations in currency exchange, interest rates or commodity, raw materials, utilities and energy
prices. 

  
 -17-

 “holder” means, with reference to any Indebtedness or other Obligations,
any holder or lender of, or trustee or collateral agent or other authorized representative with respect to, such Indebtedness or Obligations, and, in the case of Hedging Obligations, any counterparty to such Hedging Obligations. 

“Holder” means the Person in whose name a Note is registered on the Registrar’s books. 

“Indebtedness” means, with respect to any Person, 

(a) any indebtedness (including principal and premium) of such Person, whether or not contingent: 

(i) in respect of borrowed money, 
 (ii) evidenced by bonds, notes, debentures or similar instruments, 

(iii) evidenced by letters of credit (or, without duplication, reimbursement agreements in respect thereof), 

(iv) Capitalized Lease Obligations, 

(v) representing the deferred and unpaid balance of the purchase price of any property (other than Capitalized Lease
Obligations), except (A) any such balance that constitutes a trade payable or similar obligation to a trade creditor in each case accrued in the ordinary course of business, (B) liabilities accrued in the ordinary course of business and
(C) earn-outs and other contingent payments in respect of acquisitions except to the extent that the liability on account of any such earn-outs or contingent payment becomes fixed, 

(vi) representing any interest rate Hedging Obligations, or 

(vii) all Cash Management Obligations incurred with a lender (or its Affiliates) under a credit agreement, 

if and to the extent that any of the foregoing Indebtedness (other than letters of credit and Hedging Obligations) would appear as a
liability upon a balance sheet (excluding the footnotes thereto) of such Person prepared in accordance with GAAP, 
 (b) to the extent not otherwise included, any obligation by such Person to be liable for, or to pay, as obligor, guarantor or otherwise, the Indebtedness of another Person (other than by endorsement of
negotiable instruments for collection in the ordinary course of business), 
 (c) Disqualified Stock of such
Person, and 
 (d) to the extent not otherwise included, Indebtedness of another Person secured by a Lien on any
asset (other than a Lien on Capital Stock of an Unrestricted Subsidiary) owned by such Person (whether or not such Indebtedness is assumed by such Person); 
 provided, however, that notwithstanding the foregoing, Indebtedness shall be deemed not to include (A) Contingent Obligations incurred in the ordinary course of business, (B) items
that would appear as a liability on a balance sheet prepared in accordance with GAAP as a result of the application of ASC 

  
 -18-

 840- 40, “Sale-Leaseback Transactions,” and (C) obligations with respect to Receivables
Facilities. The amount of Indebtedness of any person under clause (d) above shall be deemed to equal the lesser of (x) the aggregate unpaid amount of such Indebtedness secured by such Lien and (y) the fair market value of the property
encumbered thereby as determined by such person in good faith. 
 “Indenture” means this Indenture, as amended
or supplemented from time to time. 
 “Independent Financial Advisor” means an accounting, appraisal or
investment banking firm or consultant of nationally recognized standing that is, in the good faith judgment of the Board of Directors of CDW, qualified to perform the task for which it has been engaged. 

“Initial Notes” has the meaning set forth in the recitals hereto. 

“Initial Purchasers” means the initial purchasers party to the purchase agreement related to the Initial Notes.

 “Insolvency Proceeding” means: 

(1) any case commenced by or against CDW or any other Guarantor under any Bankruptcy Law, any other proceeding for the
reorganization, recapitalization or adjustment or marshalling of the assets or liabilities of CDW or any other Guarantor, any receivership or assignment for the benefit of creditors relating to CDW or any other Guarantor or any similar case or
proceeding relative to CDW or any other Guarantor or its creditors, as such, in each case whether or not voluntary; 
 (2) any liquidation, dissolution, marshalling of assets or liabilities or other winding up of or relating to CDW or any other Guarantor, in each case whether or not voluntary and whether or not involving
bankruptcy or insolvency; or 
 (3) any other proceeding of any type or nature in which substantially all claims of creditors of
CDW or any other Guarantor are determined and any payment or distribution is or may be made on account of such claims. 

“Interest Payment Date” means April 1 and October 1 of each year to Stated Maturity, and the Maturity Date.

 “Investment Grade Rating” means a rating equal to or higher than Baa3 (or the equivalent) by Moody’s
and BBB- (or the equivalent) by S&P, or an equivalent rating by any other Rating Agency. 
 “Investment Grade
Securities” means: 
 (a) securities issued or directly and fully guaranteed or insured by the United
States government or any agency or instrumentality thereof (other than Cash Equivalents); 
 (b) debt securities
or debt instruments with an Investment Grade Rating, but excluding any debt securities or instruments constituting loans or advances among CDW and its Subsidiaries; 

  
 -19-

 (c) investments in any fund that invests exclusively in investments of the
type described in clauses (a) and (b) which fund may also hold immaterial amounts of cash pending investment or distribution; and 
 (d) corresponding instruments in countries other than the United States customarily utilized for high quality investments. 
 “Investments” means, with respect to any Person, all direct or indirect investments by such Person in other Persons (including Affiliates) in the form of loans (including guarantees or
other obligations), advances or capital contributions (including by means of any transfer of cash or other property to others or any payment for property or services for the account or use of others, but excluding accounts receivable, trade credit,
advances to customers, commission, travel, entertainment, relocation, payroll and similar advances to officers, directors and employees, in each case made in the ordinary course of business), purchases or other acquisitions for consideration of
Indebtedness, Equity Interests or other securities issued by any other Person and investments that are required by GAAP to be classified on the balance sheet (excluding the footnotes) of such Person in the same manner as the other investments
included in this definition to the extent such transactions involve the transfer of cash or other property. If CDW or any Subsidiary of CDW sells or otherwise disposes of any Equity Interests of any direct or indirect Restricted Subsidiary of CDW
such that, after giving effect to any such sale or disposition, such Person is no longer a Subsidiary of CDW, CDW shall be deemed to have made an Investment on the date of any such sale or disposition equal to the fair market value of the Equity
Interests of such Subsidiary not sold or disposed of in an amount determined as provided in the third paragraph of Section 4.07 hereof. 
 For purposes of the definition of “Unrestricted Subsidiary” and Section 4.07 hereof, (i) “Investments” shall include the portion (proportionate to CDW’s equity
interest in such Subsidiary) of the fair market value of the net assets of a Subsidiary of CDW at the time that such Subsidiary is designated an Unrestricted Subsidiary; provided, however, that upon a redesignation of such Subsidiary
as a Restricted Subsidiary, CDW shall be deemed to continue to have a permanent “Investment” in an Unrestricted Subsidiary in an amount (if positive) equal to (x) CDW’s “Investment” in such Subsidiary at the time of
such redesignation less (y) the portion (proportionate to CDW’s equity interest in such Subsidiary) of the fair market value of the net assets of such Subsidiary at the time of such redesignation; (ii) any property transferred to or
from an Unrestricted Subsidiary shall be valued at its fair market value at the time of such transfer, in each case as determined in good faith by the Board of Directors of CDW and (iii) any transfer of Capital Stock that results in an entity
which became a Restricted Subsidiary after the Release Date ceasing to be a Restricted Subsidiary shall be deemed to be an Investment in an amount equal to the fair market value (as determined by the Board of Directors of CDW in good faith as of the
date of initial acquisition) of the Capital Stock of such entity owned by CDW and its Restricted Subsidiaries immediately after such transfer. 
 “Issue Date” means April 13, 2011. 

“Issuers” has the meaning provided in the introductory paragraph of this Indenture. 

“Krasny Plan” means the MPK Coworker Incentive Plan II as in effect on the Closing Date. 

“Legal Holiday” means a Saturday, a Sunday or a day on which banking institutions in the City of New York, the city in
which the principal Corporate Trust Office of the Trustee is located or at a place of payment are authorized by law, regulation or executive order to remain closed. If a payment date is a Legal Holiday, payment shall be made at that place on the
next succeeding day that is not a Legal Holiday, and no interest shall accrue for the intervening period. 

  
 -20-

 “Lien” means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest or encumbrance of any kind in respect of such asset, whether or not filed, recorded or otherwise perfected under applicable law, including any conditional sale or other title retention agreement, any lease in the nature
thereof, any option or other agreement to sell or give a security interest in such asset and any filing of or agreement to give any financing statement under the Uniform Commercial Code (or equivalent statutes) of any jurisdiction with respect to
such asset; provided that in no event shall an operating lease or occupancy agreement be deemed to constitute a Lien. 

“Management Agreement” means the Management Services Agreement dated as of the Closing Date, by and among certain
management companies associated with the Sponsors and CDW and any direct or indirect parent company. 
 “Maturity
Date” means April 1, 2019. 
 “Maximum Tender Amount” has the meaning set forth under
Section 4.22. 
 “Moody’s” means Moody’s Investors Service, Inc. and any successor to its rating
agency business. 
 “Net Income” means, with respect to any Person, the net income (loss) of such Person,
determined in accordance with GAAP and before any reduction in respect of Preferred Stock dividends or accretion of any Preferred Stock. 
 “Net Proceeds” means with respect to any Asset Sale, the proceeds thereof in the form of cash and Cash Equivalents (including any such proceeds subsequently received (as and when
received) in respect of deferred payments or non-cash consideration initially received, net of any costs relating to the disposition thereof), net of (i) out-of-pocket expenses incurred (including reasonable and customary broker’s fees or
commissions, investment banking, consultant, legal, accounting or similar fees, survey costs, title insurance premiums, and related search and recording charges, transfer, deed, recording and similar taxes incurred by CDW and its Restricted
Subsidiaries in connection therewith), and CDW’s good faith estimate of taxes paid or payable (including payments under any tax sharing agreement or arrangement), in connection with such Asset Sale (including, in the case of any such Asset Sale
in respect of property of any Foreign Subsidiary, taxes payable upon the repatriation of any such proceeds), (ii) amounts provided as a reserve, in accordance with GAAP, against any (x) liabilities under any indemnification obligations or
purchase price adjustment associated with such Asset Sale and (y) other liabilities associated with the asset disposed of and retained by CDW or any of its Restricted Subsidiaries after such disposition, including pension and other
post-employment benefit liabilities and liabilities related to environmental matters (provided that to the extent and at the time any such amounts are released from such reserve, such amounts shall constitute Net Proceeds), (iii) the
principal amount, premium or penalty, if any, interest and other amounts on any Indebtedness or other obligation which is secured by a Lien on the asset sold and (iv) in the case of any such Asset Sale by a non-Wholly Owned Restricted
Subsidiary, the pro rata portion of the Net Proceeds thereof (calculated without regard to this clause (iv)) attributable to minority interests and not available for distribution to or for the account of CDW or a Wholly Owned Restricted Subsidiary
as a result thereof. 
 “Notes” means the Initial Notes and more particularly means any Note authenticated and
delivered under this Indenture. For all purposes of this Indenture, the term “Notes” shall also include any Additional Notes that may be issued. 

  
 -21-

 “Obligations” means any principal, interest, premium, penalties, fees,
indemnifications, reimbursements (including, without limitation, reimbursement obligations with respect to letters of credit), costs, expenses, damages and other liabilities, and guarantees of payment of such principal, interest, premium, penalties,
fees, indemnifications, reimbursements, costs, expenses, damages and other liabilities, payable under the documentation governing any Indebtedness. 
 “Offer” has the meaning set forth in the definition of “Offer to Purchase.” 
 “Offer to Purchase” means a written offer (the “Offer”) delivered by CDW to the Trustee and each Holder (or distribution to the Holders by the Trustee though the
Depository), offering to purchase up to the aggregate principal amount of Notes set forth in such Offer at the purchase price set forth in such Offer (as determined pursuant to this Indenture). Unless otherwise required by applicable law, the Offer
shall specify an expiration date (the “Expiration Date”) of the Offer to Purchase which shall be, subject to any contrary requirements of applicable law, not less than 30 days or more than 60 days (or longer if in
connection with a defeasance or satisfaction and discharge) after the date of mailing of such Offer and a settlement date (the “Purchase Date”) for purchase of Notes within five (5) Business Days after the Expiration Date. CDW
shall notify the Trustee at least 15 days (or such shorter period as is acceptable to the Trustee) prior to the delivery of the Offer of CDW’s obligation to make an Offer to Purchase, and the Offer shall be delivered by CDW or, at
CDW’s request, by the Trustee in the name and at the expense of CDW. The Offer shall contain all instructions and materials necessary to enable such Holders to tender Notes pursuant to the Offer to Purchase. The Offer shall also state:

 (1) the Section of this Indenture pursuant to which the Offer to Purchase is being made; 

(2) the Expiration Date and the Purchase Date; 

(3) the aggregate principal amount of the outstanding Notes offered to be purchased pursuant to the Offer to Purchase
(including, if less than 100%, the manner by which such amount has been determined pursuant to Section 4.10 hereof or Section 4.14 hereof) (the “Purchase Amount”); 

(4) the purchase price to be paid by CDW for each $1,000 principal amount of Notes accepted for payment (as specified
pursuant to this Indenture) (the “Purchase Price”); 
 (5) that the Holder may tender all or any
portion of the Notes registered in the name of such Holder and that any portion of a Note tendered must be tendered in denominations of $2,000 principal amount or integral multiples of $1,000 thereof; 

(6) the place or places where each Holder electing to tender a Note pursuant to the Offer to Purchase are to be
surrendered (such Note being, if CDW or the Trustee so requires, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to CDW and the Trustee duly executed by, the Holder thereof or his attorney duly authorized in
writing), or instructions for transfer of the Notes by book-entry transfer, in each case such delivery shall be prior to the close of business on the Expiration Date; 

(7) that, unless CDW defaults in making such purchase, any Note accepted for purchase pursuant to the Offer to Purchase
will cease to accrue interest on and after the Purchase Date, but that any Note not tendered or tendered but not purchased by CDW pursuant to the Offer to Purchase will continue to accrue interest at the same rate; 

(8) that, on the Purchase Date, the Purchase Price will become due and payable upon each Note accepted for payment
pursuant to the Offer to Purchase; 

  
 -22-

 (10) that Holders will be entitled to withdraw all or any portion of Notes
tendered if CDW (or its Paying Agent) receive, not later than the close of business on the Expiration Date, a telegram, telex, facsimile transmission or letter setting forth the name of the Holder, the aggregate principal amount of the Notes the
Holder tendered and a statement that such Holder is withdrawing all or a portion of his tender; 
 (11) that
(a) if Notes having an aggregate principal amount less than or equal to the Purchase Amount are duly tendered and not withdrawn pursuant to the Offer to Purchase, CDW shall purchase all such Notes and (b) if Notes having an aggregate
principal amount in excess of the Purchase Amount are tendered and not withdrawn pursuant to the Offer to Purchase, CDW shall purchase Notes having an aggregate principal amount equal to the Purchase Amount on a pro rata basis (with such adjustments
as may be deemed appropriate so that only Notes in denominations of $2,000 principal amount or integral multiples of $1,000 thereof shall be purchased); and 
 (12) if applicable, that, in the case of any Holder whose Note is purchased only in part, the Issuers shall execute, and the Trustee shall authenticate and deliver to the Holder of such Note without
service charge, a new Note or Notes, of any authorized denomination as requested by such Holder, in the aggregate principal amount equal to and in exchange for the unpurchased portion of the aggregate principal amount of the Notes so tendered.

 “Officer” means the Chief Executive Officer, the President, the Chief Financial Officer, the Chief Operating
Officer, principal accounting officer, controller, any Executive Vice President, Senior Vice President or Vice President, the Treasurer or Assistant Treasurer or the Secretary or any Assistant Secretary of CDW. 

“Officers’ Certificate” means a certificate signed on behalf of CDW, by two Officers of CDW, one of whom is the
principal executive officer, the principal financial officer, the treasurer or the principal accounting officer of CDW that meets the requirements set forth in this Indenture. 
 “Opinion of Counsel” means a written opinion from legal counsel who is reasonably acceptable to the Trustee. The counsel may be an employee of or counsel to CDW or the Trustee.

 “Parent” means CDW Corporation and any successor thereto. 

“Permitted Asset Swap” means, to the extent allowable under Section 1031 of the Code, the concurrent purchase and
sale or exchange of Related Business Assets or a combination of Related Business Assets (excluding any boot thereon) between CDW or any of its Restricted Subsidiaries and another Person. 

“Permitted Business” means the business and any services, activities or businesses incidental, or directly related or
similar to, or complementary to any line of business engaged in by CDW and its Subsidiaries as of the Release Date or any business activity that is a reasonable extension, development or expansion thereof or ancillary thereto. 

“Permitted Debt” has the meaning set forth under Section 4.09. 

“Permitted Holders” means (i) the Sponsors, (ii) any Person who is an Officer or otherwise a member of
management of CDW or any of its Subsidiaries on the Closing Date, provided that if such Officers and members of management beneficially own more shares of Voting Stock of either of CDW or any of its direct or indirect parent entities than the
number of such shares beneficially owned by 

  
 -23-

 
all the Officers as of the Closing Date or issued within 90 days thereafter, such excess shall be deemed not to be beneficially owned by Permitted Holders, (iii) any Related Party of any of
the foregoing Persons and (iv) any “group” (within the meaning of Section 13(d)(3) or Section 14(d)(2) of the Exchange Act or any successor provision) of which any of the foregoing are members, provided that
in the case of such “group” and without giving effect to the existence of such “group” or any other “group,” such Persons specified in clause (i), (ii) or (iii) above (subject, in the case of Officers, to the
foregoing limitation), collectively, have beneficial ownership, directly or indirectly, of more than 50% of the total voting power of the Voting Stock of CDW or any of its direct or indirect parent entities held by such “group.”

 “Permitted Investments” means: 

(1) any Investment by CDW in any Restricted Subsidiary or by a Restricted Subsidiary in CDW or another Restricted
Subsidiary; 
 (2) any Investment in cash and Cash Equivalents or Investment Grade Securities; 

(3) any Investment by CDW or any Restricted Subsidiary in a Person that is engaged in a Permitted Business if as a result
of such Investment (A) such Person becomes a Restricted Subsidiary or (B) such Person, in one transaction or a series of related transactions, is merged, consolidated or amalgamated with or into, or transfers or conveys substantially all
of its assets to, or is liquidated into, CDW or a Restricted Subsidiary, and, in each case, any Investment held by such Person; provided that such Investment was not acquired by such Person in contemplation of such acquisition, merger,
consolidation or transfer; 
 (4) any Investment in securities or other assets not constituting cash or Cash
Equivalents or Investment Grade Securities and received in connection with an Asset Sale made pursuant to Section 4.10 hereof or any other disposition of assets not constituting an Asset Sale; 

(5) any Investment existing on the Release Date or made pursuant to binding commitments in effect on the Release Date or
an Investment consisting of any extension, modification, replacement, renewal of any Investment existing on the Release Date; provided that the amount of any such Investment may be increased (x) as required by the terms of such
Investment as in existence on the Release Date or (y) as otherwise permitted under this Indenture; 
 (6)
loans and advances to, or guarantees of Indebtedness of, directors, employees, officers and consultants not in excess of $15,000,000 outstanding at any one time, in the aggregate; 

(7) any Investment acquired by CDW or any Restricted Subsidiary (A) in exchange for any other Investment or accounts
receivable held by CDW or Restricted Subsidiary in connection with or as a result of a bankruptcy, workout, reorganization or recapitalization of the Issuers of such other Investment or accounts receivable or (B) as a result of a foreclosure by
CDW or Restricted Subsidiary with respect to any secured Investment or other transfer of title with respect to any secured Investment in default; 
 (8) Hedging Obligations permitted under clause (9) of the definition of “Permitted Debt”; 
 (9) loans and advances to officers, directors and employees for business-related travel expenses, moving expenses and other similar expenses, in each case incurred in the ordinary course of business;

  
 -24-

 (10) any Investment by CDW or a Restricted Subsidiary having an aggregate
fair market value, taken together with all other Investments made pursuant to this clause (10) that are at that time outstanding not to exceed the greater of: (x) $150,000,000; and (y) 2.0% of Total Assets of CDW; provided that
if such Investment is in Capital Stock of a Person that subsequently becomes a Restricted Subsidiary, such Investment shall thereafter be deemed permitted under clause (1) above and shall not be included as having been made pursuant to this
clause (10); 
 (11) Investments the payment for which consists of Equity Interests of CDW or any of its direct
or indirect parent companies (exclusive of Disqualified Stock); provided that such Equity Interests will not increase the amount available for Restricted Payments under clause (3)(b) of the first paragraph of Section 4.07
hereof; 
 (12) guarantees (including Guarantees) of Indebtedness permitted under Section 4.09 hereof
and performance guarantees consistent with past practice, and the creation of liens on the assets of CDW or any of its Restricted Subsidiaries in compliance with Section 4.12 hereof; 

(13) Investments consisting of licensing of intellectual property pursuant to joint marketing arrangements with other
Persons; 
 (14) Investments relating to a Receivables Subsidiary that, in the reasonable good faith
determination of CDW, are necessary or advisable to effect a Receivables Facility; 
 (15) Investments consisting
of earnest money deposits required in connection with a purchase agreement or other acquisition; 
 (16) any
transaction to the extent it constitutes an Investment that is permitted and made in accordance with the provisions of the second paragraph of Section 4.11 hereof, except transactions permitted by clause (2), (6), (8), (10), (12) or
(13); 
 (17) Investments consisting of purchases and acquisitions of inventory, supplies, material or equipment;

 (18) Investments in the ordinary course of business consisting of endorsements for collection or deposit;

 (19) additional Investments in joint ventures in an aggregate amount not to exceed $25,000,000 at any time
outstanding; 
 (20) loans and advances relating to indemnification or reimbursement of any officers, directors
or employees in respect of liabilities relating to their serving in any such capacity or as otherwise permitted under Section 4.11 hereof; 
 (21) Investments in the nature of pledges or deposits with respect to leases or utilities provided to third parties in the ordinary course of business; 

(22) Investments in industrial development or revenue bonds or similar obligations secured by assets leased to and
operated by CDW or any of its Subsidiaries that were issued in connection with the financing of such assets, so long as CDW or any such Subsidiary may obtain title to such assets at any time by optionally canceling such bonds or obligations, paying
a nominal fee and terminating such financing transaction; 

  
 -25-

 (23) deposits made by CDW and Foreign Subsidiaries in Cash Pooling
Arrangements; and 
 (24) extensions of trade credit in the ordinary course of business. 

“Permitted Liens” means the following types of Liens: 

(1) deposits of cash or government bonds made in the ordinary course of business to secure surety or appeal bonds to which
such Person is a party; 
 (2) Liens in favor of issuers of stay, customs, performance, surety, bid, indemnity,
warranty, release, appeal or similar bonds or with respect to other regulatory requirements or letters of credit or bankers’ acceptance issued, and completion guarantees provided for, in each case pursuant to the request of and for the account
of such Person in the ordinary course of its business or consistent with past practice; 
 (3) Liens on property
or shares of stock of a Person at the time such Person becomes a Subsidiary; provided, however, that such Liens are not created or incurred in connection with, or in contemplation of, or to provide all or any portion of the funds or
credit support utilized in connection with, such other Person becoming such a Subsidiary; provided further, however, that such Liens may not extend to any other property owned by CDW or any Restricted Subsidiary; 

(4) Liens on property at the time CDW or a Restricted Subsidiary acquired the property, including any acquisition by means
of a merger or consolidation with or into CDW or any of its Restricted Subsidiaries; provided, however, that such Liens are not created or incurred in connection with, or in contemplation of, or to provide all or any portion of the
funds or credit support utilized for, such acquisition; provided further, however, that such Liens may not extend to any other property owned by CDW or any Restricted Subsidiary; 

(5) Liens securing Hedging Obligations and/or Cash Management Obligations so long as the related Indebtedness is permitted
to be incurred under this Indenture and is secured by a Lien on the same property securing such Hedging Obligation and/or Cash Management Obligation; 
 (6) Liens existing on the Release Date; 
 (7) Liens in favor of CDW
or any Restricted Subsidiary; 
 (8) Liens to secure any Indebtedness that is incurred to refinance any
Indebtedness that has been secured by a Lien existing on the Release Date or referred to in clauses (3), (4) and (19)(B) of this definition; provided, however, that such Liens (x) are no less favorable to the Holders of
the Notes taken as a whole, and are not more favorable to the lien holders with respect to such Liens than the Liens in respect of the Indebtedness being refinanced, and (y) do not extend to or cover any property or assets of CDW or any of its
Restricted Subsidiaries not securing the Indebtedness so refinanced; 
 (9) Liens on accounts receivable and
related assets incurred in connection with a Receivables Facility incurred pursuant to clause (17) of the definition of “Permitted Debt”; 

  
 -26-

 (10) Liens for taxes, assessments or other governmental charges or levies
not yet overdue or the nonpayment of which in the aggregate would not reasonably be expected to result in a material adverse effect, or which are being contested in good faith by appropriate proceedings promptly instituted and diligently conducted
or for property taxes on property that CDW or one of its Subsidiaries has determined to abandon if the sole recourse for such tax, assessment, charge, levy or claim is to such property; 

(11) judgment liens in respect of judgments that do not constitute an Event of Default; 

(12) pledges, deposits or security under workmen’s compensation, unemployment insurance and other social security
laws or regulations, or deposits to secure the performance of tenders, contracts (other than for the payment of Indebtedness) or leases, or deposits to secure public or statutory obligations, or deposits as security for contested taxes or import or
customs duties or for the payment of rent, or deposits or other security securing liabilities to insurance carriers under insurance or self-insurance arrangements or earnest money deposits required in connection with a purchase agreement or other
acquisition, in each case incurred in the ordinary course of business or consistent with past practice; 
 (13)
landlords’, carriers’, warehousemen’s, mechanics’, materialmen’s, repairmen’s and other like Liens imposed by applicable law, (i) arising in the ordinary course of business and securing obligations that are not
overdue by more than sixty (60) days, (ii) (A) that are being contested in good faith by appropriate proceedings, (B) CDW or a Restricted Subsidiary has set aside on its books adequate reserves with respect thereto in accordance
with GAAP and (C) such contest effectively suspends collection of the contested obligation and enforcement of any Lien securing such obligation or (iii) the existence of which would not reasonably be expected to result in a material
adverse effect; 
 (14) minor survey exceptions, encumbrances, ground leases, easements or reservations of, or
rights of others for, licenses, rights of way, sewers, electric lines, telegraph and telephone lines and other similar purposes, or zoning, building codes or other restrictions (including, without limitation, minor defects or irregularities in title
and similar encumbrances) as to the use of real properties or Liens incidental to the conduct of business or to the ownership of properties that do not in the aggregate materially adversely affect the value of said properties or materially impair
their use in the operation of the business; 
 (15) leases, licenses, subleases, sublicenses or operating
agreements (including, without limitation, licenses and sublicenses of intellectual property) granted to others in the ordinary course of business that do not interfere in any material respect with the business of CDW or any of its material
Restricted Subsidiaries or which do not by their own terms secure any Indebtedness; 
 (16) the rights reserved
or vested in any Person by the terms of any lease, license, franchise, grant or permit held by CDW or any of its Restricted Subsidiaries or by a statutory provision, to terminate any such lease, license, franchise, grant or permit, or to require
annual or periodic payments as a condition to the continuance thereof; 
 (17) banker’s Liens, rights of
set-off or similar rights and remedies as to deposit accounts or other funds maintained with a depository institution; 
 (18) Liens arising from Uniform Commercial Code financing statement filings regarding operating leases or consignments entered into by CDW and its Restricted Subsidiaries in the ordinary course of
business; 

  
 -27-

 (19) (A) other Liens securing Indebtedness for borrowed money or other
obligations with respect to property or assets with an aggregate fair market value (valued at the time of creation thereof) with a principal amount not exceeding $75,000,000 at any time and (B) Liens securing Indebtedness incurred to finance
the construction, purchase or lease of, or repairs, improvements or additions to, property of such Person; provided, however, that (x) the Lien may not extend to any other property (except for accessions to such property) owned by
such Person or any of its Restricted Subsidiaries at the time the Lien is incurred, (y) such Liens attach concurrently with or within 270 days after the acquisition, repair, replacement, construction or improvement (as applicable) of the
property subject to such Liens and (z) with respect to Capitalized Lease Obligations, such Liens do not at any time extend to or cover any assets (except for accessions to such assets) other than the assets subject to such Capitalized Lease
Obligations; provided that individual financings of property provided by one lender may be cross-collateralized to other financings of equipment provided by such lender; 

(20) Liens (i) of a collection bank arising under Section 4-210 of the Uniform Commercial Code on items in the
course of collection, (ii) attaching to commodity trading accounts or other commodities brokerage accounts incurred in the ordinary course of business, and (iii) in favor of a banking institution arising as a matter of law encumbering
deposits (including the right of set-off) and which are within the general parameters customary in the banking industry; 
 (21) Liens encumbering reasonable customary initial deposits and margin deposits and similar Liens attaching to commodity trading accounts or other brokerage accounts incurred in the ordinary course of
business and not for speculative purposes; 
 (22) Liens that are contractual rights of set-off (i) relating
to the establishment of depository relations with banks not given in connection with the issuance of Indebtedness, (ii) relating to pooled deposit or sweep accounts of CDW or any Restricted Subsidiary to permit satisfaction of overdraft or
similar obligations incurred in the ordinary course of business of CDW and its Restricted Subsidiaries or (iii) relating to purchase orders and other agreements entered into by CDW or any Restricted Subsidiary in the ordinary course of
business; 
 (23) Liens solely on any cash earnest money deposits made by CDW or any of its Restricted
Subsidiaries in connection with any letter of intent or purchase agreement permitted under this Indenture; 

(24) Liens with respect to the assets of a Restricted Subsidiary that is not a Guarantor securing Indebtedness of such
Restricted Subsidiary incurred in accordance with Section 4.09 hereof; 
 (25) Liens to secure
Indebtedness incurred pursuant to (A) clauses (1), (11), (20) and (24) of the definition of “Permitted Debt” and (B) clause (13) of the definition of “Permitted Debt” to the extent such Liens relate to
the refinancing of the Senior Secured Notes; 
 (26) Liens arising by operation of law under Article 2 of
the Uniform Commercial Code in favor of a reclaiming seller of goods or buyer of goods; 
 (27) security given to
a public or private utility or any governmental authority as required in the ordinary course of business; 

  
 -28-

 (28) landlords’ and lessors’ Liens in respect of rent not in
default for more than sixty days or the existence of which, individually or in the aggregate, would not reasonably be expected to result in a material adverse effect; 

(29) Liens in favor of customs and revenues authorities imposed by applicable law arising in the ordinary course of
business in connection with the importation of goods and securing obligations (i) with respect to customs duties in the ordinary course of business, (ii) that are not overdue by more than sixty (60) days, (iii) (A) that are
being contested in good faith by appropriate proceedings, (B) CDW or Restricted Subsidiary has set aside on its books adequate reserves with respect thereto in accordance with GAAP and (C) such contest effectively suspends collection of
the contested obligation and enforcement of any Lien securing such obligation, or (iv) the existence of which would not reasonably be expected to result in a material adverse effect; 

(30) Liens on securities which are the subject of repurchase agreements incurred in the ordinary course of business;

 (31) Liens on the Capital Stock of Unrestricted Subsidiaries; 

(32) Liens on inventory or equipment of CDW or any of its Restricted Subsidiaries granted in the ordinary course of
business to CDW’s or such Restricted Subsidiary’s clients or customers at which such inventory or equipment is located; 
 (33) pledges or deposits made in the ordinary course of business to secure liability to insurance carriers and Liens on insurance policies and the proceeds thereof (whether accrued or not), rights or
claims against an insurer or other similar asset securing insurance premium financings permitted under clause (21) of the definition of “Permitted Debt”; 

(34) Liens on cash deposits of CDW and Foreign Subsidiaries subject to a Cash Pooling Arrangement or otherwise over bank
accounts of CDW and Foreign Subsidiaries maintained as part of the Cash Pooling Arrangement, in each case securing liabilities for overdrafts of CDW and Foreign Subsidiaries participating in such Cash Pooling Arrangements; 

(35) any encumbrance or retention (including put and call agreements and rights of first refusal) with respect to the
Equity Interests of any joint venture or similar arrangement pursuant to the joint venture or similar agreement with respect to such joint venture or similar arrangement; 

(36) Liens on property subject to Sale and Lease-Back Transactions permitted hereunder and general intangibles related
thereto; 
 (37) Liens consisting of customary contractual restrictions on cash and Cash Equivalents; and

 (38) Liens securing the Notes and related Guarantees and any Notes issued in the exchange thereof pursuant to
the Registration Rights Agreement; and 
 (39) Liens securing any Obligations incurred pursuant to the first
paragraph of Section 4.09; provided, however, that, at the time of incurrence of such Liens and after giving pro forma effect thereto (including a pro forma application of the net proceeds therefrom), the Consolidated
Secured Debt Ratio would be no greater than 3.25 to 1.0. 

  
 -29-

 “Person” means any individual, corporation, partnership, joint venture,
association, joint stock company, trust, unincorporated organization, limited liability company or government or other entity. 

“Preferred Stock” means any Equity Interest with preferential rights of payment of dividends upon liquidation,
dissolution or winding up. 
 “Purchase Agreement” means that certain notes purchase agreement dated
March 29, 2011 among the Escrow Issuer, CDW LLC, CDW Finance Corporation, the Guarantors and the Initial Purchasers. 

“Purchase Amount” has the meaning set forth in the definition of “Offer to Purchase. 

“Purchase Date” has the meaning set forth in the definition of “Offer to Purchase.” 

“Purchase Price” has the meaning set forth in the definition of “Offer to Purchase.” 

“Qualified Proceeds” means assets that are used or useful in, or Capital Stock of any Person engaged in, a Permitted
Business; provided that the fair market value of any such assets or Capital Stock shall be determined by the Board of Directors of CDW in good faith. 
 “Rating Agencies” means Moody’s and S&P or if Moody’s or S&P or both shall not make a rating on the notes publicly available, a nationally recognized statistical rating
agency or agencies, as the case may be, selected by CDW which shall be substituted for Moody’s or S&P or both, as the case may be. 
 “Receivables Facility” means any of one or more receivables financing facilities as amended, supplemented, modified, extended, renewed, restated or refunded from time to time, the
obligations of which are non-recourse (except for customary representations, warranties, covenants and indemnities made in connection with such facilities) to CDW or any of its Restricted Subsidiaries (other than a Receivables Subsidiary) pursuant
to which CDW or any of its Restricted Subsidiaries sells their accounts receivable to either (A) a Person that is not a Restricted Subsidiary or (B) a Receivables Subsidiary that in turn sells its accounts receivable to a Person that is
not a Restricted Subsidiary. 
 “Receivables Fees” means distributions or payments made directly or by means of
discounts with respect to any accounts receivable or participation interest therein issued or sold in connection with, and other fees paid to a Person that is not a Restricted Subsidiary in connection with, any Receivables Facility. 

“Receivables Subsidiary” means any subsidiary formed for the purpose of, and that solely engages only in, one or more
Receivables Facilities and other activities reasonably related thereto. 
 “Record Date” for the interest or
Additional Interest, if any, payable on any applicable Interest Payment Date means the March 15 or September 15 (whether or not on a Business Day) immediately preceding such Interest Payment Date. 

“Redemption Price” when used with respect to any Note to be redeemed, means the price at which it is to be redeemed
pursuant to this Indenture. 
 “Refunding Capital Stock” has the meaning ascribed to such term in clause
(2) of the second paragraph of Section 4.07 hereof. 

  
 -30-

 “Registration Rights Agreement” means that certain Registration Rights
Agreement related to the Notes, dated the Issue Date, by and among CDW, FinanceCo, the Guarantors and the Initial Purchasers. 

“Regulation S” means Regulation S promulgated under the Securities Act. 

“Related Business Assets” means assets (other than cash or Cash Equivalents) used or useful in a Permitted Business,
provided that any assets received by CDW or a Restricted Subsidiary in exchange for assets transferred by CDW or a Restricted Subsidiary shall not be deemed to be Related Business Assets if they consist of securities of a Person, unless upon
receipt of the securities of such Person, such Person would become a Restricted Subsidiary. 
 “Related Party”
means (a) with respect to Madison Dearborn Partners, LLC and Providence Equity Partners, Inc., (i) any investment fund controlled by or under common control with Madison Dearborn Partners, LLC or Providence Equity Partners, Inc., as the
case may be, any officer, director or person performing an equivalent function of the foregoing persons, or any entity controlled by any of the foregoing Persons and (ii) any spouse or lineal descendant (including by adoption and stepchildren)
of the officers and directors referred to in clause (a)(i); and (b) with respect to any officer of CDW or its Subsidiaries, (i) any spouse or lineal descendant (including by adoption and stepchildren) of the officer and (ii) any
trust, corporation or partnership or other entity, in each case to the extent not an operating company, of which an 80% or more controlling interest is held by the beneficiaries, stockholders, partners or owners who are the officer, any of the
persons described in clause (b)(i) above or any combination of these identified relationships. 
 “Release
Date” has the meaning set forth under Section 4.22. 
 “Replacement Assets” has the meaning set
forth under Section 4.10(a). 
 “Required Holders” means, as of any date of determination, Holders
that hold Notes that, in the aggregate, represent more than 50% of the sum of the principal amount of all Notes outstanding at such time. 
 “Responsible Officer” means, when used with respect to the Trustee, any officer within the corporate trust department of the Trustee, including any vice president, assistant vice
president, assistant secretary, assistant treasurer, trust officer or any other officer of the Trustee who customarily performs functions similar to those performed by the Persons who at the time shall be such officers, respectively, or to whom any
corporate trust matter is referred because of such Person’s knowledge of and familiarity with the particular subject and who shall have direct responsibility for the administration of this Indenture. 

“Restricted Investment” means an Investment other than a Permitted Investment. 

“Restricted Subsidiary” means, at any time, any direct or indirect Subsidiary of CDW (including any Foreign Subsidiary)
that is not then an Unrestricted Subsidiary; provided, however, that upon the occurrence of an Unrestricted Subsidiary ceasing to be an Unrestricted Subsidiary, such Subsidiary shall be included in the definition of Restricted
Subsidiary. 
 “Retired Capital Stock” has the meaning set forth under Section 4.07. 

  
 -31-

 “Reversion Date” means, during any period of time during which the Issuers
and the Restricted Subsidiaries are not subject to the covenants listed in Section 4.19 (the “Suspended Covenants”) as a result of a Covenant Suspension Event, the date on which one or both of the Rating Agencies
withdraws its Investment Grade Rating or downgrades the rating assigned to the notes below an Investment Grade Rating or a Default occurs and is continuing, and after which date the Issuers and the Restricted Subsidiaries will again be subject to
the Suspended Covenants with respect to events occurring after the Reversion Date. 
 “S&P” means
Standard & Poor’s Ratings Services, a division of The McGraw-Hill Companies, Inc., and any successor to its rating business. 
 “Sale and Lease-Back Transaction” means any arrangement with any Person providing for the leasing by CDW or any Restricted Subsidiary of any real or tangible personal property, which
property has been or is to be sold or transferred by CDW or such Restricted Subsidiary to such Person in contemplation of such leasing. 
 “Secured Indebtedness” means any Indebtedness of an Issuer or any of its Restricted Subsidiaries secured by a Lien. 

“Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations of the Commission
promulgated thereunder. 
 “Senior Bridge Loan Agreement” means the senior unsecured increasing rate term loan
agreement dated as of October 12, 2007, as amended and restated dated as of March 12, 2008 and amended dated as of April 12, 2008, among CDW LLC (as successor in interest to CDW Corporation), Parent, the subsidiary guarantors party
thereto, JPMorgan Chase Bank, N.A., as Administrative Agent, and the lenders from time to time party thereto, including any guarantees, instruments and agreement executed in connection therewith, and any amendments, supplements, modifications,
extensions, renewals or restatements thereof. 
 “Senior Indebtedness” means: 

(1) all Indebtedness of the Issuers or any Guarantor outstanding under the ABL Facility, the Senior Secured Notes, the
Existing Senior Notes, the Senior Secured Term Loan and the Notes and related Guarantees (including interest accruing on or after the filing of any petition in bankruptcy or similar proceeding or for reorganization of the Issuers or any Guarantor
(at the rate provided for in the documentation with respect thereto, regardless of whether or not a claim for post-filing interest is allowed in such proceedings)), and any and all other fees, expense reimbursement obligations, indemnification
amounts, penalties, and other amounts (whether existing on the Release Date or thereafter created or incurred) and all obligations of the Issuers or any Guarantor to reimburse any bank or other Person in respect of amounts paid under letters of
credit, acceptances or other similar instruments; 
 (2) all Hedging Obligations (and guarantees thereof) and/or
Cash Management Obligations (and guarantees thereof) owing to a Lender (as defined in the ABL Facility and the Senior Secured Term Loan) or any Affiliate of such Lender (or any Person that was a Lender or an Affiliate of such Lender at the time the
applicable agreement giving rise to such Hedging Obligation and/or Cash Management Obligation was entered into); provided that such Hedging Obligations and/or Cash Management Obligations are permitted to be incurred under the terms of this
Indenture; 
 (3) any other Indebtedness of the Issuers or any Guarantor permitted to be incurred under the terms
of this Indenture, unless the instrument under which such Indebtedness is incurred expressly provides that it is subordinated in right of payment to the Notes or any related Guarantee; and 

  
 -32-

 (4) all Obligations with respect to the items listed in the preceding
clauses (1), (2) and (3); 
 provided, however, that Senior Indebtedness shall not include: 

(a) any obligation of such Person to the Issuers or any of its Subsidiaries; 

(b) any liability for federal, state, local or other taxes owed or owing by such Person; 

(c) any accounts payable or other liability to trade creditors arising in the ordinary course of business; 

(d) any Indebtedness or other Obligation of such Person which is subordinate or junior in any respect to any other
Indebtedness or other Obligation of such Person; or 
 (e) that portion of any Indebtedness which at the
time of incurrence is incurred in violation of this Indenture. 
 “Senior Pari Passu Indebtedness” means:

 (1) with respect to the Issuers, the Notes and any Indebtedness that ranks pari passu in right of payment to the Notes; and

 (2) with respect to any Guarantor, its Guarantee and any Indebtedness that ranks pari passu in right of payment to such
Guarantor’s Guarantee. 
 “Senior Secured Note Indenture” means that certain senior secured notes
indenture dated as of December 17, 2010 as supplemented by the senior secured note supplemental indenture dated as of March 29, 2011, among CDW, FinanceCo, the guarantors party thereto and U.S. Bank National Association, as Trustee.

 “Senior Secured Notes” means the Issuers’ $500,000,000 8% senior secured notes due 2018. 

“Senior Secured Term Loan” means that certain senior secured term loan, dated as of the Closing Date, among VH
MergerSub, Inc., CDW LLC (as successor in interest to CDW Corporation), Morgan Stanley Senior Funding, Inc. (as successor to Lehman Commercial Paper Inc.), as Administrative Agent, and Morgan Stanley & Co. Incorporated (as successor to
Lehman Commercial Paper Inc.), as Collateral Agent, the lenders party thereto and certain other parties specified therein, as amended by the First Amended and Restated Senior Secured Term Loan, dated as of March 12, 2008, as further amended on
November 4, 2009, December 17, 2010 and March 11, 2011, providing for term loans, including any related notes, debentures, bonds, guarantees, collateral documents, instruments and agreements executed in connection therewith, and
in each case as amended, restated, supplemented, modified, renewed, refunded, replaced (whether at maturity or thereafter) or refinanced from time to time in one or more agreements, indentures, notes, bonds, facilities or other forms of indebtedness
in whole or in part (in each case with the same or new agents, lenders or investors), including any agreement adding or changing the borrower or issuer or any guarantor or extending the maturity thereof or otherwise restructuring all or any portion
of the Indebtedness thereunder or increasing the amount loaned or issued thereunder or altering the maturity thereof (provided that such increase in borrowings is permitted under Section 4.09 hereof). 

  
 -33-

 “Senior Subordinated Bridge Loan Agreement” means the senior subordinated
unsecured increasing rate term loan agreement dated as of October 12, 2007, as amended and restated dated as of March 12, 2008 and further amended on April 12, 2008, among CDW LLC (as successor in interest to CDW Corporation), Parent,
the subsidiary guarantors party thereto, JPMorgan Chase Bank, N.A., as Administrative Agent, and the lenders from time to time party thereto, including any guarantees, instruments and agreement executed in connection therewith, and any amendments,
supplements, modifications, extensions, renewals or restatements thereof. 
 “Senior Subordinated Note
Indenture” means that certain senior subordinated exchange note indenture dated as of October 10, 2008, as supplemented by the senior subordinated exchange note supplemental indenture dated May 10, 2010, and as further
supplemented by the second senior subordinated exchange note supplemental indenture dated August 23, 2010 among CDW, FinanceCo, the guarantors party thereto and U.S. Bank National Association, as trustee. 

“Senior Subordinated Notes” means the Issuers’ $721,500,000 12.535% senior subordinated exchange notes due 2017.

 “Shortfall Amount” means (a) the difference between the Maximum Tender Amount and the aggregate
principal amount of Existing Senior Notes validly tendered and not validly withdrawn in the Tender Offer multiplied by (b) 1.09. 
 “Significant Subsidiary” means any Restricted Subsidiary that would be a “significant subsidiary” as defined in Article 1, Rule 1-02 of Regulation S-X, promulgated pursuant to
the Securities Act, as such Regulation is in effect on the Release Date. 
 “Special Mandatory Redemption” has
the meaning set forth under Section 3.10. 
 “Special Mandatory Redemption Date” has the meaning set forth
under Section 3.10. 
 “Sponsors” means Madison Dearborn Partners, LLC and Providence Equity Partners,
Inc. and each of their respective Affiliates (other than any portfolio company thereof). 
 “Standard Receivables
Undertakings” means representations, warranties, covenants and indemnities entered into by CDW or any Subsidiary of CDW which CDW has determined in good faith to be customary in a Receivables Facility, including, without limitation, those
relating to the servicing of the assets of a Receivables Subsidiary. 
 “Stated Maturity” means, with respect
to any installment of interest or principal on any series of Indebtedness, the date on which the payment of interest or principal was scheduled to be paid in the original documentation governing such Indebtedness, and will not include any contingent
obligations to repay, redeem or repurchase any such interest or principal prior to the date originally scheduled for the payment thereof. 
 “Subordinated Indebtedness” means (a) with respect to an Issuer, any Indebtedness of such Issuer which is by its terms subordinated in right of payment to the Notes and (b) with
respect to any Guarantor, any Indebtedness of such Guarantor which is by its terms subordinated in right of payment to its Guarantee. 

  
 -34-

 “Subsidiary” means, with respect to any specified Person: 

(1) any corporation, association or other business entity of which more than 50% of the total voting power of shares of
Capital Stock entitled (without regard to the occurrence of any contingency) to vote in the election of directors, managers or trustees thereof is at the time owned or controlled, directly or indirectly, by that Person or one or more of the other
Subsidiaries of that Person (or a combination thereof); and 
 (2) any partnership, joint venture, limited
liability company or similar entity of which (x) more than 50% of the capital accounts, distribution rights, total equity and voting interests or general or limited partnership interests, as applicable, are owned or controlled, directly or
indirectly, by such Person or one or more of the other Subsidiaries of that Person or a combination thereof whether in the form of membership, general, special or limited partnership or otherwise and (y) such Person or any Wholly Owned
Restricted Subsidiary of such Person is a controlling general partner or otherwise controls such entity. 
 “Tender
Offer” means the offer by CDW and FinanceCo to purchase Existing Senior Notes pursuant to the offer to purchase and consent solicitation dated February 22, 2011, as amended from time to time. 

“Total Assets” means the total assets of CDW and its Restricted Subsidiaries, on a consolidated basis prepared in
accordance with GAAP, shown on the most recent balance sheet of CDW and its Restricted Subsidiaries as may be expressly stated. 

“Total Net Tangible Assets” means total assets of CDW and its Restricted Subsidiaries, less all goodwill, trade names,
trademarks, patents and any other like intangibles, all on a consolidated basis prepared in accordance with GAAP, shown on the most recent balance sheet of CDW and its Restricted Subsidiaries. 

“Transfer Restricted Notes” means Definitive Notes and any other Notes that bear or are required to bear the Restricted
Notes Legend. 
 “Treasury Rate” means, as of the applicable Redemption Date, the yield to maturity as of such
Redemption Date of United States Treasury securities with a constant maturity (as compiled and published in the most recent Federal Reserve Statistical Release H.15 (519) that has become publicly available at least two (2) Business Days
prior to the Redemption Date (or, if such Statistical Release is no longer published, any publicly available source of similar market data)) most nearly equal to the period from the Redemption Date to April 1, 2015; provided,
however, that if the period from the Redemption Date to April 1, 2015 is less than one year, the weekly average yield on actually traded United States Treasury securities adjusted to a constant maturity of one year will be used.

 “Trust Indenture Act” means the Trust Indenture Act of 1939, as amended (15 U.S.C.
§§ 77aaa-777bbbb). 
 “Trustee” means U.S. Bank National Association, as trustee, until a
successor replaces it in accordance with the applicable provisions of this Indenture and thereafter means the successor serving hereunder. 
 “Trust Officer” means when used with respect to the Trustee, any officer within the corporate trust department of the Trustee assigned by the Trustee to administer its corporate trust
matters who customarily performs functions of such officers who at the time any corporate trust matter is referred to because of the person’s knowledge of or familiarity with the particular subject who shall have direct responsibility for the
administration of this Indenture. 

  
 -35-

 “Uniform Commercial Code” means the New York Uniform Commercial Code as in
effect from time to time. 
 “Unrestricted Subsidiary” means (i) any Subsidiary of CDW that at the time of
determination is an Unrestricted Subsidiary (as designated by the Board of Directors of CDW, as provided below) and (ii) any Subsidiary of an Unrestricted Subsidiary. The Board of Directors of CDW may designate any Subsidiary of CDW (including
any existing Subsidiary and any newly acquired or newly formed Subsidiary) to be an Unrestricted Subsidiary unless such Subsidiary or any of its Subsidiaries owns any Equity Interests or Indebtedness of, or owns or holds any Lien on, any property
of, CDW or any Subsidiary of CDW (other than any Unrestricted Subsidiary of the Subsidiary to be so designated); provided that (a) any Unrestricted Subsidiary must be an entity of which shares of the Capital Stock or other equity
interests (including partnership interests) entitled to cast at least a majority of the votes that may be cast by all shares or equity interests having ordinary voting power for the election of directors or other governing body are owned, directly
or indirectly, by CDW, (b) such designation complies with Section 4.07 hereof and (c) each of (I) the Subsidiary to be so designated and (II) its Subsidiaries has not at the time of designation, and does not
thereafter, create, incur, issue, assume, guarantee or otherwise become directly or indirectly liable with respect to any Indebtedness pursuant to which the lender has recourse to any of the assets of CDW or any Restricted Subsidiary (other than the
Capital Stock of such Subsidiary to be so designated). The Board of Directors of CDW may designate any Unrestricted Subsidiary to be a Restricted Subsidiary; provided that, immediately after giving effect to such designation, no Event of
Default shall have occurred and be continuing and any Indebtedness assumed or otherwise incurred in connection with such designation shall have been permitted to have been incurred by CDW pursuant to Section 4.09 hereof. Any such
designation by the Board of Directors of CDW shall be notified by CDW to the Trustee by promptly filing with such Trustee a copy of the Board Resolution giving effect to such designation and an Officers’ Certificate certifying that such
designation complied with the foregoing provisions. 
 “U.S. Dollar Equivalent” means, with respect to any
monetary amount in a currency other than U.S. dollars, at any time for determination thereof, the amount of U.S. dollars obtained by converting such foreign currency involved in such computation into U.S. dollars at the spot rate for the purchase of
U.S. dollars with the applicable foreign currency as published in The Wall Street Journal in the “Exchange Rates” column under the heading “Currency Trading” on the date two (2) Business Days prior to such
determination. 
 Except as described in Section 4.09 hereof, whenever it is necessary to determine whether CDW has
complied with any covenant in this Indenture or a Default has occurred and an amount is expressed in a currency other than U.S. dollars, such amount will be treated as the U.S. Dollar Equivalent determined as of the date such amount is
initially determined in such currency. 
 “U.S. Government Securities” means securities that are: 

(a) direct obligations of the United States of America for the timely payment of which its full faith and credit is
pledged; or 
 (b) obligations of a Person controlled or supervised by and acting as an agency or instrumentality
of the United States of America the timely payment of which is unconditionally guaranteed as a full faith and credit obligation by the United States of America, 

  
 -36-

 which, in either case, are not callable or redeemable at the option of the issuers thereof, and shall also
include a depository receipt issued by a bank (as defined in Section 3(a)(2) of the Securities Act), as custodian with respect to any such U.S. Government Securities or a specific payment of principal of or interest on any such U.S. Government
Securities held by such custodian for the account of the holder of such depository receipt; provided that (except as required by law) such custodian is not authorized to make any deduction from the amount payable to the holder of such
depository receipt from any amount received by the custodian in respect of the U.S. Government Securities or the specific payment of principal of or interest on the U.S. Government Securities evidenced by such depository receipt. 

“U.S. Person” means a U.S. person as defined in Rule 902(k) under the Securities Act. 

“Voting Stock” of any Person as of any date means the Capital Stock of such Person that is at the time entitled to vote
in the election of the Board of Directors of such Person. 
 “Weighted Average Life to Maturity” means, when
applied to any Indebtedness at any date, the number of years obtained by dividing: 
 (1) the sum of the products
obtained by multiplying (a) the amount of each then remaining installment, sinking fund, serial maturity or other required payments of principal, including payment at final maturity, in respect of the Indebtedness, by (b) the number of
years (calculated to the nearest one-twelfth) that will elapse between such date and the making of such payment; by 
 (2) the then outstanding principal amount of such Indebtedness. 
 “Wholly
Owned Restricted Subsidiary” is any Wholly Owned Subsidiary that is a Restricted Subsidiary. 
 “Wholly Owned
Subsidiary” of any Person means a Subsidiary of such Person, 100% of the outstanding Capital Stock or other ownership interests of which (other than directors’ qualifying shares and shares issued to foreign nationals under applicable
law) shall at the time be owned by such Person or by one or more Wholly Owned Subsidiaries of such Person or by such Person and one or more Wholly Owned Subsidiaries of such Person. 

SECTION 1.02 Other Definitions. 
  

			
	 Term
	  	Defined in
Section
	 “Acceleration Notice”
	  	6.02
	 “Affiliate Transaction”
	  	4.11
	 “Agent Members”
	  	2.1(c) of
Appendix A
	 “Applicable Procedures”
	  	1.1(a) of
Appendix A
	 “Asset Sale Offer”
	  	4.10
	 “Authentication Order”
	  	2.06
	 “Cash Election”
	  	2.02(f)
	 “Change of Control Offer”
	  	4.14
	 “Change of Control Payment”
	  	4.14
	 “Change of Control Payment Date”
	  	4.14

  
 -37-

			
	 Term
	  	Defined
in Section
	 “Clearstream”
	  	1.1(a) of
Appendix A
	 “Covenant Defeasance”
	  	8.03
	 “DTC”
	  	2.02(g)
	 “Event of Default”
	  	6.01
	 “Excess Proceeds”
	  	4.10
	 “Euroclear”
	  	1.1(a) of
Appendix A
	 “Global Note”
	  	2.1(b) of
Appendix A
	 “Global Notes Legend”
	  	1.1(a) of
Appendix A
	 “Guaranteed Obligations”
	  	10.01
	 “incur”
	  	4.09
	 “Interest Election Notice”
	  	2.02(f)
	 “Legal Defeasance”
	  	8.02
	 “Limited Non-Guarantor Debt Exceptions”
	  	4.09
	 “Note”
	  	Preamble
	 “Note Register”
	  	2.07
	 “Offer Amount”
	  	3.09
	 “Paying Agent”
	  	2.07
	 “Permitted Debt”
	  	4.09
	 “QIB”
	  	1.1(a) of
Appendix A
	 “Redemption Date”
	  	3.07
	 “Refinancing Indebtedness”
	  	4.09
	 “Refunding Capital Stock”
	  	4.07
	 “Registered Exchange Offer”
	  	1.1(a) of
Appendix A
	 “Registrar”
	  	2.07
	 “Registration Rights Agreement”
	  	1.1(a) of
Appendix A
	 “Regulation S”
	  	1.1(a) of
Appendix A
	 “Regulation S Global Note”
	  	2.1(b) of
Appendix A
	 “Regulation S Notes”
	  	1.1(a) of
Appendix A
	 “Regulation S Permanent Global Note”
	  	2.1(b) of
Appendix A
	 “Regulation S Temporary Global Note”
	  	2.1(b) of
Appendix A
	 “Restricted Global Note”
	  	1.1(a) of
Appendix A
	 “Restricted Notes Legend”
	  	1.1(a) of
Appendix A
	 “Restricted Payments”
	  	4.07

  
 -38-

			
	 Term
	  	Defined
in Section
	 “Restricted Period”
	  	1.1(a) of
Appendix A
	 “Retired Capital Stock”
	  	4.07
	 “Rule 501”
	  	1.1(a) of
Appendix A
	 “Rule 144”
	  	1.1(a) of
Appendix A
	 “Rule 144A”
	  	1.1(a) of
Appendix A
	 “Rule 144A Global Note”
	  	2.1(b) of
Appendix A
	 “Rule 144A Notes”
	  	1.1(a) of
Appendix A
	 “Rule 904”
	  	1.1(a) of
Appendix A
	 “Shelf Registration Statement”
	  	1.1(a) of
Appendix A
	 “Successor Company”
	  	5.01
	 “Successor Guarantor”
	  	10.06(a)
	 “Successor Parent Guarantor”
	  	10.06(b)
	 “Successor Person”
	  	5.01
	 “Suspension Condition”
	  	4.19
	 “Taxes”
	  	4.05
	 “Treasury Capital Stock”
	  	4.07
	 “Unrestricted Definitive Note”
	  	1.1(a) of
Appendix A
	 “Unrestricted Global Note”
	  	1.1(a) of
Appendix A

 SECTION 1.03 Incorporation by Reference of Trust Indenture Act. Whenever this Indenture refers to a provision of the Trust Indenture Act, the provision is incorporated by reference in and made a
part of this Indenture. 
 The following Trust Indenture Act terms used in this Indenture have the following meanings:

 “indenture securities” means the Notes and the Guarantees; 

“indenture security Holder” means a Holder of a Note; 
 “indenture to be qualified” means this Indenture; 
 “indenture
trustee” or “institutional trustee” means the Trustee; and 
 “obligor” on the Notes and the Guarantees
means the Issuers and the Guarantors, respectively, and any successor obligor upon the Notes and the Guarantees, respectively. 

  
 -39-

 All other terms used in this Indenture that are defined by the Trust Indenture Act, defined
by Trust Indenture Act reference to another statute or defined by Commission rule under the Trust Indenture Act have the meanings so assigned to them. 
 SECTION 1.04 Rules of Construction. Unless the context otherwise requires: 
 (a) a term has the meaning assigned to it herein; 
 (b) an
accounting term not specifically or completely defined herein shall be construed in conformity with, and all financial data (including financial ratios and other financial calculations) required to be submitted pursuant to this Indenture shall be
prepared in conformity with, GAAP, except as otherwise specifically prescribed herein. 
 (c) “or” is
not exclusive; 
 (d) “including” means including without limitation; 

(e) words in the singular include the plural, and in the plural include the singular; 

(f) “will” shall be interpreted to express a command; 

(g) provisions apply to successive events and transactions; 

(h) references to sections of, or rules under, the Securities Act or the Exchange Act shall be deemed to include
substitute, replacement or successor sections or rules adopted by the Commission from time to time; 
 (i) unless the context otherwise requires, any reference to an “Article,” “Section” or “clause” refers to an Article, Section or clause, as the case may be, of this Indenture; 

(j) the words “herein,” “hereof” and “hereunder” and other words of similar import refer to
this Indenture as a whole and not any particular Article, Section, clause or other subdivision; 
 (k) in the
computation of periods of time from a specified date to a later specified date, the word “from” means “from and including”; the words “to” and “until” each mean “to but excluding”; and the word
“through” means “to and including”; and 
 (l) any financial ratios required to be satisfied
in order for a specific action to be permitted under this Indenture shall be calculated by dividing the appropriate component by the other component, carrying the result to one place more than the number of places by which such ratio is expressed
herein and rounding the result up or down to the nearest number (with a rounding-up if there is no nearest number). 
 SECTION
1.05 Acts of Holders. 
 (a) Any request, demand, authorization, direction, notice, consent, waiver or other action
provided by this Indenture to be given or taken by Holders may be embodied in and evidenced by one or more instruments of substantially similar tenor signed by such Holders, as applicable, in person or by an agent duly appointed in writing. Except
as herein otherwise expressly provided, such action shall become effective when such instrument or instruments or record or both are delivered to the Trustee and, 

  
 -40-

 
where it is hereby expressly required, to the Issuers. Proof of execution of any such instrument or of a writing appointing any such agent, or the holding by any Person of a Note, shall be
sufficient for any purpose of this Indenture and (subject to Section 7.01 hereof) conclusive in favor of the Trustee and the Issuers, if made in the manner provided in this Section 1.05. 

(b) The fact and date of the execution by any Person of any such instrument or writing may be proved by the affidavit of a witness of
such execution or by the certificate of any notary public or other officer authorized by law to take acknowledgments of deeds, certifying that the individual signing such instrument or writing acknowledged to him the execution thereof. Where such
execution is by or on behalf of any legal entity other than an individual, such certificate or affidavit shall also constitute proof of the authority of the Person executing the same. The fact and date of the execution of any such instrument or
writing, or the authority of the Person executing the same, may also be proved in any other manner that the Trustee deems sufficient. 
 (c) The ownership of Notes shall be proved by the Note Register. 
 (d) Any
request, demand, authorization, direction, notice, consent, waiver or other action by the Holder of any Note shall bind every future Holder of the same Note and the Holder of every Note issued upon the registration of transfer thereof or in exchange
therefor or in lieu thereof, in respect of any action taken, suffered or omitted by the Trustee or the Issuers in reliance thereon, whether or not notation of such action is made upon such Note. 

(e) The Issuers may, except as otherwise provided herein and in the Notes, set a record date for purposes of determining the identity of
Holders entitled to give any request, demand, authorization, direction, notice, consent, waiver or take any other act, or to vote or consent to any action by vote or consent authorized or permitted to be given or taken by Holders. 

(f) Without limiting the foregoing, a Holder entitled to take any action hereunder with regard to any particular Note may do so with
regard to all or any part of the principal amount of such Note or by one or more duly appointed agents, each of which may do so pursuant to such appointment with regard to all or any part of such principal amount. Any notice given or action taken by
a Holder or its agents with regard to different parts of such principal amount pursuant to this paragraph shall have the same effect as if given or taken by separate Holders of each such different part. 

(g) Without limiting the generality of the foregoing, a Holder, including The Depository Trust Company (“DTC”), may
make, give or take, by a proxy or proxies duly appointed in writing, any request, demand, authorization, direction, notice, consent, waiver or other action provided in this Indenture to be made, given or taken by Holders, and DTC may provide its
proxy to the beneficial owners of interests in any such Global Note through such Depository’s standing instructions and customary practices. 
 (h) The Issuers may fix a record date for the purpose of determining the Persons who are beneficial owners of interests in any Global Note held by DTC entitled under the procedures of such Depository to
make, give or take, by a proxy or proxies duly appointed in writing, any request, demand, authorization, direction, notice, consent, waiver or other action provided in this Indenture to be made, given or taken by Holders. If such a record date is
fixed, the Holders on such record date or their duly appointed proxy or proxies, and only such Persons, shall be entitled to make, give or take such request, demand, authorization, direction, notice, consent, waiver or other action, whether or not
such Holders remain Holders after such record date. No such request, demand, authorization, direction, notice, consent, waiver or other action shall be valid or effective if made, given or taken more than 90 days after such record date. 

  
 -41-

 SECTION 1.06 References to Agreements, Laws, Etc. Unless otherwise expressly provided
herein, (a) references to agreements (including this Indenture and the Notes) and other contractual instruments shall be deemed to include all subsequent amendments, restatements, extensions, supplements and other modifications thereto, but
only to the extent that such amendments, restatements, extensions, supplements and other modifications are permitted by this Indenture; and (b) references to any law shall include all statutory and regulatory provisions consolidating, amending,
replacing, supplementing or interpreting such law. 
 SECTION 1.07 Times of Day. Unless otherwise specified, all
references herein to times of day shall be references to New York City time (daylight or standard, as applicable). 
 SECTION
1.08 Timing of Payment or Performance. When the payment of any obligation or the performance of any covenant, duty or obligation is stated to be due or performance required on a day which is not a Business Day, the date of such payment or
performance shall extend to the immediately succeeding Business Day. 
 ARTICLE II 

THE NOTES 

SECTION 2.01 Form and Dating; Terms. 
 (a) Global Notes. Notes issued in global form shall be substantially in the form of Exhibit A hereto (including the Global Note Legend thereon and the “Schedule of Exchanges of
Interests in the Global Note” attached thereto). Notes issued in definitive form shall be substantially in the form of Exhibit A attached hereto (but without the Global Note Legend thereon and without the “Schedule of Exchanges of
Interests in the Global Note” attached thereto). Each Global Note shall represent such of the outstanding Notes as shall be specified in the “Schedule of Exchanges of Interests in the Global Note” attached thereto and each shall
provide that it shall represent up to the aggregate principal amount of outstanding Notes from time to time endorsed thereon and that the aggregate principal amount of outstanding Notes represented thereby may from time to time be reduced or
increased, as applicable, to reflect exchanges and redemptions. Any endorsement of a Global Note in definitive form to reflect the amount of any increase or decrease in the aggregate principal amount of outstanding Notes represented thereby shall be
made by the Trustee or the Custodian, at the direction of the Trustee, in accordance with instructions given by the Holder thereof as required by Section 2.06 hereof. 

(b) Temporary Global Notes. Notes offered and sold in reliance on Regulation S shall be issued initially in the form of the
Regulation S Temporary Global Note, which shall be deposited on behalf of the purchasers of the Notes represented thereby with the Trustee, as custodian for the Depositary, and registered in the name of the Depositary or the nominee of the
Depositary for the accounts of designated agents holding on behalf of Euroclear or Clearstream, duly executed by the Issuers and authenticated by the Trustee as hereinafter provided. The Restricted Period shall be terminated upon the receipt by the
Trustee of: 
 (i) a written certificate from the Depositary (if available), together with copies of certificates
from Euroclear and Clearstream (if available) certifying that they have received certification of non-United States beneficial ownership of 100% of the aggregate principal amount of the Regulation S Temporary Global Note (except to the extent of any
beneficial owners thereof who acquired an interest therein during the Restricted Period pursuant to another exemption from registration under the Securities Act and who shall take delivery of a beneficial ownership interest in a 144A Global Note
bearing a Private Placement Legend, all as contemplated by Section 2.3(b) of Appendix A hereof); and 

  
 -42-

 (ii) an Officers’ Certificate from the Issuers. 

Following the termination of the Restricted Period, beneficial interests in the Regulation S Temporary Global Note shall be exchanged for
beneficial interests in the Regulation S Permanent Global Note of the same series pursuant to the Applicable Procedures. Simultaneously with the authentication of the corresponding Regulation S Permanent Global Note, the Trustee shall cancel the
corresponding Regulation S Temporary Global Note. The aggregate principal amount of the Regulation S Temporary Global Note and the Regulation S Permanent Global Note may from time to time be increased or decreased by adjustments made on the records
of the Trustee and the Depositary or its nominee, as the case may be, in connection with transfers of interest as hereinafter provided. 
 (c) Terms. 
 The terms and provisions contained in the Notes shall
constitute, and are hereby expressly made, a part of this Indenture and the Issuers, the Guarantors and the Trustee, by their execution and delivery of this Indenture, expressly agree to such terms and provisions and to be bound thereby. However, to
the extent any provision of any Note conflicts with the express provisions of this Indenture, the provisions of this Indenture shall govern and be controlling. 
 The Notes shall be subject to repurchase by CDW pursuant to an Asset Sale Offer or ABL Asset Sale Offer as provided in Section 4.10 hereof or a Change of Control Offer as provided in
Section 4.14 hereof. The Notes shall not be redeemable at the Issuers’ option, other than as provided in Article III. 
 Additional Notes ranking pari passu with the Initial Notes may be created and issued from time to time by the Issuers without notice to or consent of the Holders and shall be consolidated with and
form a single class with the Initial Notes and shall have the same terms as to status, redemption or otherwise as the Initial Notes; provided that the Issuers’ ability to issue Additional Notes shall be subject to the Issuers’
compliance with Section 4.09 hereof. The Notes offered by the Issuers and any Additional Notes subsequently issued under this Indenture will be treated as a single class for all purposes under this Indenture, including waivers,
amendments, redemptions and offers to purchase. Unless the context requires otherwise, references to “Notes” for all purposes of this Indenture include any Additional Notes that are actually issued. 

(d) Euroclear and Clearstream Procedures Applicable. The provisions of the “Operating Procedures of the Euroclear
System” and “Terms and Conditions Governing Use of Euroclear” and the “General Terms and Conditions of Clearstream Banking” and “Customer Handbook” of Clearstream shall be applicable to transfers of beneficial
interests in the Regulation S Global Notes that are held by Agent Members through Euroclear or Clearstream. 
 SECTION 2.02
Interest Rates. Except for Additional Interest, if any, and as otherwise provided in Section 2.16 below, Notes shall bear interest for the period from and including the date such Note was issued to, but excluding, the Maturity
Date, at a rate per annum (computed on the basis of a 360-day year comprised of twelve 30-day months) equal to 8.5%. 
 SECTION
2.03 Transferability. Each Holder shall have an unconditional right to sell its Notes subject to, and in compliance with, the provisions of this Indenture and applicable law. 

  
 -43-

 SECTION 2.04 [Reserved] 

SECTION 2.05 Form and Dating. Provisions relating to the Notes are set forth in Appendix A attached hereto, which is
hereby incorporated in, and expressly made a part of, this Indenture. The Notes (whether in global or definitive form) and the Trustee’s certificate of authentication shall be substantially in the form of Exhibit A hereto. The Notes may
have notations, legends or endorsements required by law, stock exchange rules, agreements to which the Issuers or any Guarantor is subject, if any, or usage (provided that any such notation, legend or endorsement is in a form acceptable to
the Issuers). Each Note shall be dated the date of its authentication. The Notes shall be in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof. Notwithstanding the foregoing, to the extent any provision of any Note
conflicts with the express provisions of this Indenture, the provisions of this Indenture shall govern and be controlling. 

SECTION 2.06 Execution and Authentication. At least one Officer of each Issuer shall execute the Notes on behalf of each Issuer by
manual or facsimile signature. 
 If an Officer of an Issuer whose signature is on a Note no longer holds that office at the
time the Trustee authenticates the Note, the Note shall nevertheless be valid. 
 A Note shall not be entitled to any benefit
under this Indenture or be valid or obligatory for any purpose until authenticated substantially in the form of Exhibit A attached hereto, as the case may be, by the manual signature of a Responsible Officer of the Trustee. The signature
shall be conclusive evidence that the Note has been duly authenticated and delivered under this Indenture. 
 The Trustee shall
authenticate and deliver from time to time the Initial Notes for issue in a principal amount of $725,000,000 upon a written order (an “Authentication Order”) of the Issuers signed by two Officers of the Issuers. In addition, the
Trustee shall authenticate and deliver from time to time (i) Exchange Notes for issue in a Registered Exchange Offer pursuant to the Registration Rights Agreement for a like principal amount of Initial Notes exchanged pursuant thereto or
otherwise pursuant to an effective registration statement under the Securities Act and (ii) upon receipt of an Authentication Order, Additional Notes in an amount specified therein (to the extent permitted hereunder). Such Authentication Order
shall specify the amount of the Notes to be authenticated, the date on which the original issue of Notes is to be authenticated, whether the Notes are to be Definitive Notes or Global Notes, the number of separate Note certificates, the registered
holder of each of the Notes and delivery instructions and whether or not the Notes are to be Initial Notes, Additional Notes or Exchange Notes, and such other information as the Trustee may reasonably request. 

The Trustee may appoint an authenticating agent acceptable to the Issuers to authenticate the Notes. Any such appointment shall be
evidenced by an instrument signed by a Trust Officer, a copy of which shall be furnished to the Issuers. Unless limited by the terms of such appointment, an authenticating agent may authenticate the Notes whenever the Trustee may do so. Each
reference in this Indenture to authentication by the Trustee includes authentication by such agent. An authenticating agent has the same rights as any Registrar, Paying Agent or agent for service of notices and demands. 

SECTION 2.07 Registrar and Paying Agent. The Issuers shall maintain (i) an office or agency where Notes may be presented for
registration of transfer or for exchange (the “Registrar”) and (ii) an office or agency where Notes may be presented for payment (the “Paying Agent”). The Registrar shall keep a register of the Notes
(“Note Register”) and of their transfer and exchange. The Issuers may appoint one or more co-registrars, one or more additional paying agents and one or more transfer agents. The term “Registrar” includes any co-registrar
and the term “Paying Agent” includes any additional paying agents. 

  
 -44-

 The Issuers shall maintain a Registrar and Paying Agent in the Borough of Manhattan, the
City of New York, the State of New York. 
 The Issuers initially appoint the Trustee as Registrar and Paying Agent in
connection with the Notes. The Issuers may change any Paying Agent or Registrar without prior notice to any Holder. The Issuers may remove any Agent upon written notice to such Agent and to the Trustee; provided, however, that no such
removal shall become effective until (i) acceptance of an appointment by a successor as evidenced by an appropriate agreement entered into by the Issuers and such successor Agent and delivered to the Trustee or (ii) notification to the
Trustee that the Trustee shall serve as such Agent until the appointment of a successor in accordance with clause (i). Any Agent may resign at any time upon written notice to the Issuers and the Trustee. The Issuers shall notify the Trustee in
writing of the name and address of any Agent not a party to this Indenture. If the Issuers fail to appoint or maintain another entity as Registrar or Paying Agent, the Trustee shall, to the extent that it is capable, act as such. The Issuers or any
of the Restricted Subsidiaries may act as Paying Agent or Registrar. 
 The Issuers initially appoint DTC to act as Depository
with respect to the Global Notes representing the Notes. 
 If any Notes are listed on an exchange and the rules of such
exchange so require, the Issuers shall satisfy any requirement of such exchange as to paying agents, registrars and transfer agents and will comply with any notice requirements required under such exchange in connection with any change of paying
agent, registrar or transfer agent. 
 SECTION 2.08 Paying Agent to Hold Money in Trust. Prior to each due date of the
principal of and interest on any Note, the Issuers shall deposit with the Paying Agent (or if an Issuer or any Restricted Subsidiary is acting as Paying Agent, segregate and hold in trust for the benefit of the Persons entitled thereto) a sum
sufficient to pay such principal and interest when so becoming due. The Issuers shall require each Paying Agent (other than the Trustee) to agree in writing that the Paying Agent shall hold in trust for the benefit of Holders or the Trustee all
money held by the Paying Agent for the payment of principal, premium, if any, or interest on the Notes and will notify the Trustee of any default by the Issuers in making any such payment. While any such default continues, the Trustee may require a
Paying Agent (other than the Trustee) to pay all money held by it to the Trustee. The Issuers at any time may require a Paying Agent (other than the Trustee) to pay all money held by it to the Trustee and to account for any funds disbursed by the
Paying Agent. Upon complying with this Section, the Paying Agent (if other than the Issuers or a Restricted Subsidiary) shall have no further liability for the money delivered to the Trustee. If the Issuers or a Restricted Subsidiary acts as Paying
Agent, it shall segregate and hold in a separate trust fund for the benefit of the Holders all money held by it as Paying Agent. Upon any bankruptcy or reorganization proceedings relating to an Issuer, the Trustee shall serve as Paying Agent for the
Notes. 
 SECTION 2.09 Holder Lists. The Trustee shall preserve in as current a form as is reasonably practicable the
most recent list available to it of the names and addresses of all Holders and shall otherwise comply with Trust Indenture Act Section 312(a). If the Trustee is not the Registrar, the Issuers shall furnish, or cause the Registrar to furnish, to
the Trustee in writing at least five (5) Business Days before each Interest Payment Date and at such other times as the Trustee may request in writing, a list in such form and as of such date as the Trustee may reasonably require of the names
and addresses of the Holders of Notes, including the aggregate principal amount of Notes held by each Holder thereof, and the Issuers shall otherwise comply with Trust Indenture Act Section 312(a). 

  
 -45-

 SECTION 2.10 Transfer and Exchange. 

(a) The Notes shall be issued in registered form and shall be transferable only upon the surrender of a Note for registration of transfer
and in compliance with Appendix A. When a Note is presented to the Registrar or co-registrar with a request to register the transfer, the Registrar or a co-register shall register the transfer as requested if its requirements therefor
are met. When Notes are presented to the Registrar or co-registrar with a request to exchange them for an equal principal amount of Notes of other denominations, the Registrar shall make the exchange as requested if the same requirements are met.

 (b) To permit registrations of transfers and exchanges, the Issuers shall execute and the Trustee shall authenticate Global
Notes and Definitive Notes upon receipt of an Authentication Order in accordance with Section 2.06 hereof or at the Registrar’s request. 
 (c) No service charge shall be made to a holder of a beneficial interest in a Global Note or to a Holder of a Definitive Note for any registration of transfer or exchange, but the Issuers may require
payment of a sum sufficient to cover any stamp or transfer tax or similar governmental charge payable in connection therewith (other than any such stamp or transfer taxes or similar governmental charge payable upon exchange or transfer pursuant to
Sections 2.11, 2.14, 3.06, 3.09, 4.10, 4.14 and 9.04 hereof). 
 (d)
Neither the Registrar nor the Issuers shall be required to register the transfer of or exchange any Note selected for redemption or tendered (and not withdrawn) for repurchase in whole or in part, except the unredeemed portion of any Note being
redeemed or tendered in part. 
 (e) All Global Notes and Definitive Notes issued upon any registration of transfer or exchange
of Global Notes or Definitive Notes shall be the valid obligations of the Issuers, evidencing the same debt, and entitled to the same benefits under this Indenture, as the Global Notes or Definitive Notes surrendered upon such registration of
transfer or exchange. 
 (f) The Issuers shall not be required (A) to issue, to register the transfer of or to exchange any
Notes during a period beginning at the opening of business 15 days before the day of any selection of such Notes for redemption under Section 3.02 hereof and ending at the close of business on the day of selection or (B) to
issue, register the transfer of or to exchange any Notes so selected for redemption in whole or in part. 
 (g) Prior to due
presentment for the registration of a transfer of any Note, the Trustee, any Agent and the Issuers may deem and treat the Person in whose name any Note is registered as the absolute owner of such Note for the purpose of receiving payment of
principal of (and premium and Additional Interest, if any) and interest on such Note and for all other purposes, and none of the Trustee, any Agent or the Issuers shall be affected by notice to the contrary. 

(h) Upon surrender for registration of transfer of any Note at the office or agency of the Issuers designated pursuant to
Section 4.02 hereof, the Issuers shall execute, and the Trustee shall authenticate and mail, in the name of the designated transferee or transferees, one or more replacement Notes of any authorized denomination or denominations of a like
aggregate principal amount. 
 (i) At the option of the Holder, Notes may be exchanged for other Notes and of any authorized
denomination or denominations of a like aggregate principal amount upon surrender of the Notes to be exchanged at such office or agency. Whenever any Global Notes or Definitive Notes are so surrendered for exchange, the Issuers shall execute, and
the Trustee shall authenticate and mail, the replacement Global Notes and Definitive Notes which the Holder making the exchange is entitled to in accordance with the provisions of Section 2.06 hereof. 

  
 -46-

 (j) Any Holder of a Global Note shall by acceptance of such Global Note, agree that
transfers of beneficial interest in such Global Note may be effected only through a book-entry system maintained by (i) the Holder of such Global Note (or its agent) or (ii) any Holder of a beneficial interest in such Global Note, and that
ownership of a beneficial interest in such Global Note shall be required to be reflected in a book entry. 
 (k) All
certifications, certificates and Opinions of Counsel required to be submitted to the Registrar pursuant to this Section 2.10 to effect a registration of transfer or exchange may be submitted by facsimile. 

SECTION 2.11 Replacement Notes. If any mutilated Note is surrendered to the Trustee, the Registrar or the Issuers and the Trustee
receives evidence to its satisfaction of the ownership and destruction, loss or theft of any Note, the Issuers shall issue and the Trustee, upon receipt of an Authentication Order, shall authenticate a replacement Note if the Trustee’s
requirements are met. If required by the Trustee or the Issuers, an indemnity bond must be supplied by the Holder that is sufficient in the judgment of the Trustee and the Issuers to protect the Issuers, the Trustee, any Agent and any authenticating
agent from any loss or liability that any of them may suffer if a Note is replaced and subsequently presented or claimed for payment. The Issuers and the Trustee may charge the Holder for their expenses in replacing a Note. 

Every replacement Note is a contractual obligation of the Issuers and shall be entitled to all of the benefits of this Indenture equally
and proportionately with all other Notes duly issued hereunder. 
 SECTION 2.12 Outstanding Notes. The Notes outstanding
at any time are all the Notes authenticated by the Trustee except for those cancelled by it, those delivered to it for cancellation, those reductions in the interest in a Global Note effected by the Trustee in accordance with the provisions hereof
and those described in this Section 2.12 as not outstanding. Except as set forth in Section 2.13 hereof, a Note does not cease to be outstanding because an Issuer, a Guarantor or an Affiliate of CDW or a Guarantor holds the
Note. 
 If a Note is replaced pursuant to Section 2.11 hereof, it ceases to be outstanding unless the Trustee
receives proof satisfactory to it that the replaced Note is held by a protected purchaser (as defined in Section 8-303 of the Uniform Commercial Code). 
 If the principal amount of any Note is considered paid under Section 4.01 hereof, it ceases to be outstanding and interest on it ceases to accrue. 

If the Paying Agent (other than an Issuer, a Guarantor or an Affiliate of CDW or a Guarantor) holds, on a Redemption Date or maturity
date, money sufficient to pay Notes (or portions thereof) payable on that date, then on and after that date such Notes (or portions thereof) shall be deemed to be no longer outstanding and shall cease to accrue interest. 

SECTION 2.13 Treasury Notes. In determining whether the Holders of the required aggregate principal amount of Notes have concurred
in any direction, waiver or consent, Notes owned by an Issuer, a Guarantor or by any Affiliate of CDW or a Guarantor, shall be considered as though not outstanding, except that for the purposes of determining whether the Trustee shall be protected
in relying on any such direction, waiver or consent, only Notes that a Responsible Officer of the Trustee knows are 

  
 -47-

 so owned shall be so disregarded. Notes so owned which have been pledged in good faith shall not be
disregarded if the pledgee establishes to the satisfaction of the Trustee the pledgee’s right to deliver any such direction, waiver or consent with respect to the Notes and that the pledgee is not an Issuer, a Guarantor or any obligor upon the
Notes or any Affiliate of CDW, a Guarantor or of such other obligor. 
 SECTION 2.14 Temporary Notes. Until certificates
representing Definitive Notes are ready for delivery, the Issuers may prepare and the Trustee, upon receipt of an Authentication Order, shall authenticate temporary Notes. Temporary Notes shall be substantially in the form of certificated Notes but
may have variations that the Issuers consider appropriate for temporary Notes and as shall be reasonably acceptable to the Trustee. Without unreasonable delay, the Issuers shall prepare and the Trustee, upon receipt of an Authentication Order, shall
authenticate Definitive Notes in exchange for temporary Notes without charge to the Holder. 
 Holders and beneficial holders,
as the case may be, of temporary Notes shall be entitled to all of the benefits accorded to Holders, or beneficial holders, respectively, of Notes under this Indenture. 
 SECTION 2.15 Cancellation. The Issuers at any time may deliver Notes to the Trustee for cancellation. The Registrar and Paying Agent shall forward to the Trustee any Notes surrendered to them for
registration of transfer, exchange or payment. The Trustee or, at the direction of the Trustee, the Registrar or the Paying Agent and no one else shall cancel all Notes surrendered for registration of transfer, exchange, payment, replacement or
cancellation and shall destroy cancelled Notes (subject to the record retention requirement of the Exchange Act). Certification of the destruction of all cancelled Notes shall be delivered to the Issuers. The Issuers may not issue new Notes to
replace Notes that it has paid or that have been delivered to the Trustee for cancellation. 
 SECTION 2.16 Defaulted
Interest. If the Issuers default in a payment of interest on the Notes, it shall pay the defaulted interest in any lawful manner plus, to the extent lawful, interest payable on the defaulted interest, in each case at the rate provided in the
Notes and in Section 4.01 hereof. The Issuers may pay the defaulted interest to the Persons who are Holders on a subsequent special record date. The Issuers shall notify the Trustee in writing of the amount of defaulted interest proposed
to be paid on each Note and the date of the proposed payment, and at the same time the Issuers shall deposit with the Trustee an amount of money equal to the aggregate amount proposed to be paid in respect of such defaulted interest or shall make
arrangements satisfactory to the Trustee for such deposit prior to the date of the proposed payment, such money when deposited to be held in trust for the benefit of the Persons entitled to such defaulted interest as provided in this
Section 2.16. The Trustee shall fix or cause to be fixed any such special record date and payment date; provided that no such special record date shall be less than five (5) days prior to the related payment date for such
defaulted interest (or such shorter period as is acceptable to the Trustee). The Trustee shall promptly notify the Issuers of any such special record date. At least 15 days before any such special record date, the Issuers (or, upon the written
request of the Issuers, the Trustee in the name and at the expense of the Issuers) shall mail or cause to be mailed, first-class postage prepaid, to each Holder, with a copy to the Trustee, a notice at his or her address as it appears in the Note
Register that states the special record date, the related payment date and the amount of such interest to be paid. 
 Subject to
the foregoing provisions of this Section 2.16 and for greater certainty, each Note delivered under this Indenture upon registration of transfer of or in exchange for or in lieu of any other Note shall carry the rights to interest accrued
and unpaid, and to accrue, which were carried by such other Note. 
 SECTION 2.17 [Reserved]. 

  
 -48-

 SECTION 2.18 CUSIP/ISIN Numbers. The Issuers in issuing the Notes shall use
commercially reasonable efforts to use CUSIP and ISIN numbers (in each case, if then generally in use) and the Trustee shall use CUSIP and ISIN numbers in notices of redemption or exchange as a convenience to Holders; provided, that any such
notice may state that no representation is made as to the correctness of such numbers either as printed on the Notes or as contained in any notice of redemption and that reliance may be placed only on the other identification numbers printed on the
Notes, and any such redemption shall not be affected by any defect in or omission of such numbers. The Issuers will as promptly as practicable notify the Trustee in writing of any change in the CUSIP and ISIN numbers. 

SECTION 2.19 Calculation of Principal Amount of Notes. The aggregate principal amount of the Notes, at any date of determination,
shall be the principal amount of the Notes at such date of determination. With respect to any matter requiring consent, waiver, approval or other action of the Holders of a specified percentage of the principal amount of all the Notes, such
percentage shall be calculated, on the relevant date of determination, by dividing (a) the principal amount, as of such date of determination, of Notes, the Holders of which have so consented by (b) the aggregate principal amount, as of
such date of determination, of the Notes then outstanding, in each case, as determined in accordance with the preceding sentence, Section 2.12 and Section 2.13 of this Indenture. Any such calculation made pursuant to this
Section 2.19 shall be made by the Issuers and delivered to the Trustee pursuant to an Officers’ Certificate. 

SECTION 2.20 Effectiveness of Indenture. For the avoidance of doubt, all parties hereto hereby agree that the terms and provisions
of this Indenture shall be effective and applicable as of the Issue Date and at all times thereafter until the time at which no Notes are outstanding. 
 SECTION 2.21 Registered Exchange Offer. Upon the occurrence of a Registered Exchange Offer in accordance with the Registration Rights Agreement, the Issuers shall issue and, upon receipt of an
Authentication Order in accordance with Section 2.06 hereof, the Trustee shall authenticate (i) one or more Unrestricted Global Notes in an aggregate principal amount equal to the principal amount of the beneficial interests in the
Restricted Global Notes tendered for acceptance by Persons that certify in the applicable Letters of Transmittal that (x) they are not broker-dealers, (y) they are not participating in a distribution of any Exchange Notes and (z) they
are not affiliates (as defined in Rule 144) of the Issuers, and accepted for exchange in the Exchange Offer and (ii) Unrestricted Definitive Notes in an aggregate principal amount equal to the principal amount of the Restricted Definitive Notes
tendered for acceptance by Persons that certify in the applicable Letters of Transmittal that (x) they are not broker-dealers, (y) they are not participating in a distribution of the Exchange Notes and (z) they are not affiliates (as
defined in Rule 144) of the Issuers, and accepted for exchange in the Exchange Offer. Concurrently with the issuance of such Notes, the Trustee shall cause the aggregate principal amount of the applicable Restricted Global Notes to be reduced
accordingly, and the Issuers shall execute and the Trustee shall authenticate and mail to the Persons designated by the Holders of Definitive Notes so accepted Unrestricted Definitive Notes in the applicable principal amount. Any Notes that remain
outstanding after the consummation of an Exchange Offer, and Exchange Notes issued in connection with an Exchange Offer, shall be treated as a single class of securities under this Indenture. 

ARTICLE III 

REDEMPTION 
 SECTION 3.01 Notices to Trustee. If the Issuers elect to redeem Notes pursuant to Section 3.07 hereof, they shall furnish to the Trustee, at least fifteen (15) Business Days before
notice of redemption is required to be mailed or caused to be mailed to Holders pursuant to Section 3.03 hereof but 

  
 -49-

 
not more than 60 days before a Redemption Date, an Officers’ Certificate of CDW setting forth (i) the paragraph or subparagraph of such Note and/or Section of this Indenture pursuant to
which the redemption shall occur, (ii) the Redemption Date, (iii) the principal amount of the Notes to be redeemed and (iv) the redemption price. 
 If CDW is required to make an Offer to Purchase Notes pursuant to Section 4.10 or 4.14 hereof, they shall furnish to the Trustee, at least 15 days before notice of redemption is
required to be mailed or caused to be mailed to Holders pursuant to Section 3.03 hereof (or such shorter period as is acceptable to the Trustee) but not more than 60 days before a Redemption Date, an Officers’ Certificate of CDW
setting forth (i) the paragraph or subparagraph of such Note and/or Section of this Indenture pursuant to which the redemption shall occur, (ii) the terms of the offer, (iii) the principal amount of Notes to be purchased,
(iv) the purchase price and (v) the purchase date and further setting forth a statement to the effect that (a) CDW or one of the Restricted Subsidiaries has effected an Asset Sale and there are Excess Proceeds aggregating more than
$25,000,000 or (b) a Change of Control has occurred, as applicable. 
 SECTION 3.02 Selection of Notes to Be
Redeemed. If less than all of the Notes are to be redeemed at any time, the Trustee shall select the Notes to be redeemed (i) if the Notes are listed on any national securities exchange, in compliance with the requirements of the principal
national securities exchange on which such Notes are listed; or (ii) if the Notes are not listed on any national securities exchange, on a pro rata basis among those to be redeemed to the extent practicable, or, if the pro
rata basis is not practicable for any reason, by lot or by such other method the Trustee shall deem fair and appropriate subject to the rules and procedures of DTC. In the event of partial redemption by lot, the particular Notes to be
redeemed shall be selected, unless otherwise provided herein, not less than 30 nor more than 60 days prior to the Redemption Date by the Trustee from the outstanding Notes not previously called for redemption. 

The Trustee shall promptly notify the Issuers in writing of the Notes selected for redemption and, in the case of any Note selected for
partial redemption, the principal amount thereof to be redeemed. Notes and portions of Notes selected shall be in amounts of $2,000 or whole multiples of $1,000 in excess thereof; no Notes of less than $2,000 can be redeemed in part, except that if
all of the Notes of a Holder are to be redeemed, the entire outstanding amount of Notes held by such Holder, even if not a multiple of $1,000 shall be redeemed. Except as provided in the preceding sentence, provisions of this Indenture that apply to
Notes called for redemption also apply to portions of Notes called for redemption. 
 SECTION 3.03 Notice of Redemption.
Except as otherwise provided herein, the Issuers shall mail or cause to be mailed by first-class mail, postage prepaid, notices of redemption at least 30 days but not more than 60 days before the Redemption Date to each Holder of Notes to be
redeemed at such Holder’s registered address or otherwise in accordance with Applicable Procedures, except that redemption notices may be mailed more than 60 days prior to a Redemption Date if the notice is issued in connection with
Article VIII or Article XI hereof. 
 The notice shall identify the Notes to be redeemed
and shall state: 
 (a) the Redemption Date; 

(b) the Redemption Price; 
 (c) if any Note is to be redeemed in part only, the portion of the principal amount of that Note that is to be redeemed and that, after the Redemption Date upon surrender of such Note, a new Note or Notes
and in principal amount equal to the unredeemed portion of the original Note representing the same indebtedness to the extent not redeemed will be issued in the name of the Holder of the Notes upon cancellation of the original Note; 

  
 -50-

 (d) the name, telephone number and address of the Paying Agent; 

(e) that Notes called for redemption must be surrendered to the Paying Agent to collect the Redemption Price; 

(f) that, unless the Issuers default in making such redemption payment, interest on Notes called for redemption ceases to
accrue on and after the Redemption Date; 
 (g) the paragraph or subparagraph of the Notes and/or Section of this
Indenture pursuant to which the Notes called for redemption are being redeemed; and 
 (h) the CUSIP and ISIN
number, if any, printed on the Notes being redeemed and that no representation is made as to the correctness or accuracy of any such CUSIP and ISIN number that is listed in such notice or printed on the Notes. 

In addition, if such redemption is subject to satisfaction of one or more conditions precedent, such notice of redemption shall describe
each such condition, and if applicable, shall state that, in the Issuers’ discretion, the Redemption Date may be delayed until such time as any or all such conditions shall be satisfied, or such redemption may not occur and such notice may be
rescinded in the event that any or all such conditions shall not have been satisfied by the Redemption Date as stated in such notice, or by the redemption date as so delayed. 
 At the Issuers’ request, the Trustee shall give the notice of redemption in the Issuers’ name and at their expense; provided that the Issuers shall have delivered to the Trustee, at least
fifteen (15) Business Days before notice of redemption is required to be mailed or caused to be mailed to Holders pursuant to this Section 3.03 (unless a shorter notice shall be agreed to by the Trustee), an Officers’
Certificate of CDW requesting that the Trustee give such notice and setting forth the form of such notice and the information to be stated in such notice as provided in the preceding paragraph. 

SECTION 3.04 Effect of Notice of Redemption. Once notice of redemption is mailed in accordance with Section 3.03
hereof, Notes called for redemption become irrevocably due and payable on the Redemption Date at the redemption price, subject to the satisfaction of any conditions precedent provided in such notice. The notice, if mailed in a manner herein
provided, shall be conclusively presumed to have been given, whether or not the Holder receives such notice. In any case, failure to give such notice by mail or any defect in the notice to the Holder of any Note designated for redemption in whole or
in part shall not affect the validity of the proceedings for the redemption of any other Note. Subject to Section 3.05 hereof, on and after the Redemption Date, interest ceases to accrue on Notes or portions of Notes called for
redemption. 
 SECTION 3.05 Deposit of Redemption Price. 

(a) Prior to 11:00 a.m. (New York City time) on the Redemption Date or the date on which the Notes must be accepted for purchase pursuant
to Section 4.10 or 4.14 hereof, the Issuers shall deposit with the Trustee or with the Paying Agent (or, if one of the Issuers is the Paying Agent, shall segregate and hold in trust) money sufficient to pay the Redemption Price or
Purchase Price, as the case may be, of and accrued and unpaid interest on all Notes to be redeemed or purchased on that date. The Trustee or the Paying Agent shall promptly return to the Issuers any money deposited with the Trustee or the Paying
Agent by the Issuers in excess of the amounts necessary to pay the Redemption Price of (including any applicable premium), and accrued and unpaid interest and Additional Interest, if any, on, all Notes to be redeemed or purchased. 

  
 -51-

 (b) If the Issuers comply with the provisions of the preceding paragraph (a), on and after
the Redemption Date, interest shall cease to accrue on the Notes or the portions of Notes called for redemption or tendered and not withdrawn in an Asset Sale Offer or Change of Control Offer (regardless of whether certificates for such securities
are actually surrendered). If a Note is redeemed or purchased on or after a Record Date but on or prior to the related Interest Payment Date, then any accrued and unpaid interest and Additional Interest, if any, to the Redemption Date shall be paid
to the Person in whose name such Note was registered at the close of business on such Record Date. If any Note called for redemption shall not be so paid upon surrender for redemption because of the failure of the Issuers to comply with the
preceding paragraph, interest shall be paid on the unpaid principal, from the Redemption Date or purchase date, as applicable, until such principal is paid, and to the extent lawful on any interest accrued to the Redemption Date or purchase date, as
applicable, not paid on such unpaid principal, in each case at the rate provided in the Notes and in Section 4.01 hereof. If any Note called for redemption or tendered in an Asset Sale Offer or Change of Control Offer shall not be so
paid upon surrender for redemption because of the failure of the Issuers to comply with the preceding paragraph, interest and Additional Interest, if any, shall be paid on the unpaid principal, from the Redemption Date until such principal is paid,
and to the extent lawful on any interest not paid on such unpaid principal. 
 SECTION 3.06 Notes Redeemed in Part. Upon
surrender and cancellation of a Note that is redeemed in part, the Issuers shall issue and the Trustee shall authenticate, upon receipt of an Authentication Order, for the Holder at the expense of the Issuers a new Note equal in principal amount to
the unredeemed portion of the Note surrendered representing the same indebtedness to the extent not redeemed; provided that each new Note will be in a principal amount of $2,000 or an integral multiple of $1,000 in excess thereof. 

SECTION 3.07 Optional Redemption. 
 (a) At any time after the Release Date and the Assumption but prior to April 1, 2015, the Issuers may redeem all or a part of the Notes, upon not less than 30 nor more than 60 days’ prior notice
mailed by first-class mail to each Holder’s registered address, at a redemption price equal to 100% of the principal amount of Notes redeemed plus the Applicable Premium as of the date of redemption, and accrued and unpaid interest and
Additional Interest, if any, to the date of redemption (the “Redemption Date”), subject to the rights of Holders of Notes on any relevant record date to receive interest due on the relevant interest payment date. 

(b) On or after April 1, 2015, the Issuers may redeem all or part of the Notes upon not less than 30 nor more than 60 days’
notice, at the redemption prices (expressed as percentages of principal amount) set forth below plus accrued and unpaid interest and Additional Interest, if any, on the Notes redeemed, to the Redemption Date (subject to the rights of Holders of
Notes on any relevant record date to receive interest due on the relevant interest payment date), if redeemed during the twelve-month period beginning on April 1 of the years indicated below. 

 

					
	 Year
	  	Percentage	 
	 2015
	  	 	104.250	% 
	 2016
	  	 	102.125	% 
	 2017 and thereafter
	  	 	100.000	% 

  
 -52-

 (c) At any time after the Release Date and the Assumption but prior to April 1, 2014,
the Issuers may on any one or more occasions redeem up to 40% of the aggregate principal amount of Notes issued under this Indenture at a redemption price of 108.500% of the principal amount, plus accrued and unpaid interest and Additional Interest,
if any, to the Redemption Date, with the Net Cash Proceeds of one or more Equity Offerings; provided that: 
 (1) at least 60% of the aggregate principal amount of Notes remains outstanding immediately after the occurrence of such redemption (excluding Notes held by the Issuers and their Subsidiaries); and

 (2) the redemption occurs within 90 days of the date of the closing of such Equity Offering and upon not less
than 30 nor more than 60 days’ prior notice mailed by first-class mail to each Holder’s registered address and otherwise in accordance with the procedures set forth in this Indenture. 

(d) Any redemption pursuant to this Section 3.07 shall be made pursuant to the provisions of Sections 3.01 through
3.06 hereof. 
 (e) Notice of any redemption upon an Equity Offering may be given prior to the completion of the related
Equity Offering, and any such redemption or notice may, at CDW’s discretion, be subject to one or more conditions precedent, including, but not limited to completion of the related Equity Offering. 

SECTION 3.08 Mandatory Redemption. The Issuers are not required to make mandatory redemption or sinking fund payments with respect
to the Notes except in accordance with Section 3.10 hereof. 
 SECTION 3.09 Offer to Purchase. In the event
that the Issuers shall be required to commence an Offer to Purchase pursuant to an Asset Sale Offer or a Change of Control Offer, the Issuers shall follow the procedures specified below. 

On the Purchase Date, the Issuers shall purchase the aggregate principal amount of Notes required to be purchased pursuant to
Section 4.10 hereof or Section 4.14 hereof (the “Offer Amount”), or if less than the Offer Amount has been tendered, all Notes tendered in response to the Offer to Purchase. Payment for any Notes so purchased
shall be made in the same manner as interest payments are made. If the Purchase Date is on or after a Record Date and on or before the related Interest Payment Date, any accrued and unpaid interest and Additional Interest, if any, shall be paid to
the Person in whose name a Note is registered at the close of business on such Record Date, and no additional interest, if any, shall be payable to the Holders who tender Notes pursuant to the Offer to Purchase. The Issuers shall notify the Trustee
in writing at least 15 days (or such shorter period as is acceptable to the Trustee) prior to the mailing of the Offer of the Issuers’ obligation to make an Offer to Purchase, and the Offer shall be mailed by the Issuers or, at the
Issuers’ request, by the Trustee in the name and at the expense of the Issuers. The Offer shall contain all instructions and materials necessary to enable such Holders to tender Notes pursuant to the Offer to Purchase. 

On or before 11:00 a.m. (New York City time) on each Purchase Date, the Issuers shall irrevocably deposit with the Paying Agent
(other than the Issuers) in immediately available funds the aggregate purchase price equal to the Offer Amount, together with accrued and unpaid interest, if any, thereon, to be held for payment in accordance with the terms of this
Section 3.09. On the Purchase Date, the Issuers shall, to the extent lawful, (i) accept for payment, on a pro rata basis to the extent necessary, the Offer Amount of Notes or portions thereof tendered pursuant to the
Offer to Purchase, or if less than 

  
 -53-

 
the Offer Amount has been tendered, all Notes tendered, (ii) deliver or cause the Paying Agent or Depository, as the case may be, to deliver to the Trustee Notes so accepted and
(iii) deliver to the Trustee an Officers’ Certificate stating that such Notes or portions thereof were accepted for payment by the Issuers in accordance with the terms of this Section 3.09. The Issuers, the Depository or the
Paying Agent, as the case may be, shall promptly mail or deliver to each tendering Holder an amount equal to the purchase price of the Notes tendered by such Holder and accepted by the Issuers for purchase, plus any accrued and unpaid interest and
Additional Interest, if any, thereon, and the Issuers shall promptly issue a new Note, and the Trustee, upon receipt of an Authentication Order, shall authenticate and mail or deliver (or cause to be transferred by book entry) at the expense of the
Issuers such new Note to such Holder, equal in principal amount to any unpurchased portion of such Holder’s Notes surrendered, if any; provided that each new Note will be in a minimum principal amount of $2,000 or integral multiples of
$1,000 in excess thereof. Any Note not so accepted shall be promptly mailed or delivered by the Issuers to the Holder thereof. The Issuers shall publicly announce in a newspaper of general circulation or in a press release provided to a nationally
recognized financial wire service the results of the Offer to Purchase on the Purchase Date. 
 Other than as specifically
provided in this Section 3.09, any purchase pursuant to this Section 3.09 shall be made pursuant to the provisions of Sections 3.01 through 3.06 hereof. 

SECTION 3.10 Special Mandatory Redemption. Except as provided in the next paragraph, all of the Notes will be subject to a
mandatory redemption (a “Special Mandatory Redemption”) in the event that either (i) the Release Date has not occurred on the Escrow End Date or (ii) at least two Business Days prior to the Escrow End Date, the Escrow
Issuer has determined, in its reasonable discretion, that the escrow conditions cannot be satisfied by such date. In the event the Escrow Issuer has determined, in its reasonable discretion, that the escrow conditions cannot be satisfied by the
Escrow End Date, CDW will issue a press release at least two Business Days prior to the Escrow End Date and will redeem the Notes on the Escrow End Date (the “Special Mandatory Redemption Date”). 

In the event that on the Escrow End Date (1) no Default or Event of Default shall have occurred and be continuing hereunder,
(2) the Escrow Issuer has waived clause (c) under Section 4.22, and (3) at least $400,000,000 in aggregate principal amount of Existing Senior Notes (but not more than the Maximum Tender Amount) are validly tendered and not
validly withdrawn in the Tender Offer, then the Shortfall Amount of Notes will be subject to a Special Mandatory Redemption on the Escrow End Date and the Issuers, as obligors, will assume all of the obligations of the Escrow Issuer under the
remaining aggregate principal amount of Notes and the Indenture and the guarantees of such remaining Notes by the Guarantors will be in full force and effect. The Escrow Issuer will only be entitled to direct the Escrow Agent to release the Escrow
Proceeds (less the Shortfall Amount) upon receipt from the Escrow Issuer of an Officers’ Certificate contemporaneously with the release of the Escrow Proceeds (less the Shortfall Amount) on or prior to the Escrow End Date stipulating that
(1) no Default or Event of Default shall have occurred and be continuing under the Indenture, (2) at least $400,000,000 in aggregate principal amount of Existing Senior Notes (but not more than the Maximum Tender Amount) have been validly
tendered and not validly withdrawn in the Tender Offer and (3) the Issuers, as obligors, have assumed all of the obligations of the Escrow Issuer under the remaining aggregate principal amount of Notes and the Indenture and the guarantees of
such remaining Notes by the Guarantors are in full force and effect. 
 The redemption price for any Special Mandatory
Redemption will be 100% of the principal amount of any Notes so redeemed. There will be no accrued interest on the Notes and no interest, premium or penalty will be paid in connection with any Special Mandatory Redemption. 

  
 -54-

 Concurrently with release of the amounts necessary to fund a Special Mandatory Redemption
to the paying agent, the Escrow Agent will release any excess of Escrow Proceeds over the mandatory redemption price to the Escrow Issuer, and the Escrow Issuer will be permitted to use such excess Escrow Proceeds at its discretion. 

ARTICLE IV 

COVENANTS 

SECTION 4.01 Payment of Notes. The Issuers shall pay or cause to be paid the principal of, premium, if any, and interest on the
Notes on the dates and in the manner provided in the Notes. Principal, premium, if any, and interest and Additional Interest, if any, shall be considered paid on the date due if the Paying Agent, if other than the Issuers, a Guarantor or an
Affiliate of the Issuers or a Guarantor, holds as of 11:00 a.m. (New York City time) on the due date money deposited by the Issuers in immediately available funds and designated for and sufficient to pay all such principal, premium, if any, and
interest and Additional Interest, if any, then due. The Issuers shall pay all Additional Interest, if any, in the same manner on the dates and amounts set forth in the Registration Rights Agreement; provided, however, the Issuers shall
deliver an Officers’ Certificate to the Trustee stating that Additional Interest is due and stating the amount of such Additional Interest on $1,000 aggregate principal amount of Notes to the Trustee no later than the Record Date of such
payment. Unless and until the Trustee receives an Officers’ Certificate stating that Additional Interest is due and payable, the Trustee is entitled to assume no Additional Interest is due. 

If all or any portion of (a) the principal amount of any Note or (b) any interest payable thereon shall not be paid when due
(including post-petition interest in any proceeding under any Bankruptcy Law and including amounts due at the Maturity Date, by acceleration or otherwise), such Note shall, without limiting the rights of the Holders, bear interest in cash at a rate
per annum that is 2% above the rate otherwise applicable to such Note from the date of such nonpayment until the amount not so paid is paid in full (both before and after judgment). For the avoidance of doubt, the interest rate applicable to overdue
principal shall equal the then applicable interest rate on the Notes plus the additional 2% referred to in the immediately preceding sentence, pursuant to the terms of such sentence. 

SECTION 4.02 Maintenance of Office or Agency. The Issuers shall maintain the offices or agencies in the Borough of Manhattan, the
City and State of New York (which may be an office of the Trustee or an Affiliate of the Trustee, Registrar or co-registrar) required under Section 2.07 hereof where Notes may be surrendered for registration of transfer or for exchange
and where notices and demands to or upon the Issuers in respect of the Notes and this Indenture may be served. The Issuers shall give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency. If
at any time the Issuers shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust Office
of the Trustee. 
 The Issuers may also from time to time designate one or more other offices or agencies where the Notes may be
presented or surrendered for any or all such purposes and may from time to time rescind such designations; provided that no such designation or rescission shall in any manner relieve the Issuers of their obligation to maintain such offices or
agencies in the Borough of Manhattan, the City and State of New York required by Section 2.07 hereof for such purposes. The Issuers shall give prompt written notice to the Trustee of any such designation or rescission and of any change
in the location of any such other office or agency. 

  
 -55-

 The Issuers hereby designate the Corporate Trust Office of the Trustee as one such office
or agency of the Issuers in accordance with Section 2.07 hereof. 
 SECTION 4.03 Reports and Other
Information. From and after the Release Date, whether or not required by the Commission, so long as any Notes are outstanding, if not filed electronically with the Commission through the Commission’s Electronic Data Gathering, Analysis, and
Retrieval System (or any successor system), CDW will furnish to the Trustee, without cost to the Trustee, within the time periods specified in the Commission’s rules and regulations for a filer that is a “non-accelerated filer”:

 (1) substantially the same quarterly and annual financial information that would be required to be contained
in a filing with the Commission on Forms 10-Q and 10-K, if CDW were required to file such forms, including a “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and, with respect to the annual
information only, a report on the annual financial statements by CDW’s certified independent accountants; and 
 (2) substantially the same current reports that would be required to be filed with the Commission on Form 8-K if CDW were required to file such reports. 

In addition, whether or not required by the Commission, after the consummation of the Registered Exchange Offer or the effectiveness of a
Shelf Registration Statement, CDW will file a copy of all of the information and reports referred to in clauses (1) and (2) above with the Commission for public availability within the time periods specified in the Commission’s rules
and regulations (unless the Commission will not accept such a filing) for a filer that is a “non-accelerated filer” (as defined in such rules and regulations) and make such information available to securities analysts and prospective
investors upon request. To the extent any such information is not so filed or furnished, as applicable, within the time periods specified above and such information is subsequently filed or furnished, as applicable, CDW will be deemed to have
satisfied its obligations with respect thereto at such time and any Default or Event of Default with respect thereto shall be deemed to have been cured; provided, that such cure shall not otherwise affect the rights of the Holders pursuant to
Article VI if holders of at least 25% in principal amount of the then total outstanding Notes have declared the principal, premium, if any, interest and any other monetary obligations on all the then outstanding Notes to be due and payable
immediately and such declaration shall not have been rescinded or cancelled prior to such cure. In addition, CDW has agreed that, for so long as any Notes remain outstanding, it will furnish to the Holders of the Notes and to securities analysts and
prospective investors in the Notes that are “qualified institutional buyers” within the meaning of Rule 144A and certify their status as to CDW, upon their request, the information required to be delivered pursuant to Rule 144A(d)(4) under
the Securities Act. 
 In addition, if at any time any direct or indirect parent company (other than Parent) becomes a Guarantor
(there being no obligation of any such parent company to do so), holds no material assets other than cash, Cash Equivalents and the Capital Stock of CDW or any other direct or indirect parent of CDW (and performs the related incidental activities
associated with such ownership) and complies with the requirements of Rule 3-10 of Regulation S-X promulgated by the Commission (or any successor provision), the reports, information and other documents required to be filed and furnished to Holders
of the Notes pursuant to this Section 4.03 may, at the option of CDW, be filed by and be those of such parent company rather than CDW; provided that the same are accompanied by consolidating information as required by Rule 3-10 of
Regulation S-X (or any successor provision) that explains in reasonable detail the differences between the information relating to Parent and such other parent, on the one hand, and the information relating to CDW and its Restricted Subsidiaries on
a standalone basis, on the other hand. 

  
 -56-

 The Trustee’s receipt of such reports, information and documents shall not constitute
constructive notice of any information contained therein, including CDW’s compliance with any of the covenants under this Indenture. 
 The Trustee is under no duty to examine such reports, information or documents to ensure compliance with the provisions of this Indenture or to ascertain the correctness or otherwise of the information or
the statements contained therein. The Trustee is entitled to assume such compliance and correctness unless and to the extent a Responsible Officer of the Trustee is informed otherwise in an Officers’ Certificate delivered to it pursuant to the
terms of this Indenture. 
 SECTION 4.04 Compliance Certificate. 

(a) CDW shall deliver to the Trustee, within 90 days after the end of each fiscal year ending, an Officers’ Certificate stating that
a review of the activities of the Issuers and the Restricted Subsidiaries during the preceding fiscal year has been made under the supervision of the signing Officers with a view to determining whether the Issuers and the Restricted Subsidiaries
have kept, observed, performed and fulfilled their obligations under this Indenture, and further stating, as to each such Officer signing such certificate, that to the best of his or her knowledge the Issuers and the Restricted Subsidiaries have
kept, observed, performed and fulfilled each and every condition and covenant contained in this Indenture and are not in default in the performance or observance of any of the terms, provisions, covenants and conditions of this Indenture (or, if a
Default or Event of Default shall have occurred, describing all such Defaults or Events of Default of which he or she may have knowledge and what action the Issuers are taking or propose to take with respect thereto) and that, to the best of his or
her knowledge, no event has occurred and remains in existence by reason of which payments on account of the principal of, premium, if any, or interest or Additional Interest, if any, on the Notes is prohibited or if such event has occurred, a
description of the event and what action the Issuers are taking or propose to take with respect thereto. 
 (b) When any Default
or Event of Default has occurred and is continuing under this Indenture, or if the Trustee or the holder of any other evidence of Indebtedness of the Issuers or any Subsidiary gives any notice or takes any other action with respect to a claimed
Default or Event of Default, CDW shall promptly (which shall be no more than five (5) Business Days after becoming aware of such Default or Event of Default) deliver to the Trustee by registered or certified mail or by facsimile transmission an
Officers’ Certificate specifying such Default or Event of Default (unless such Default or Event of Default has been cured prior to such time) and what action the Issuers are taking or propose to take with respect thereto. 

(c) Except with respect to receipt of payments of principal and interest on the Notes and any Default or Event of Default information
contained in the Officers’ Certificate delivered to it pursuant to this Section 4.04, the Trustee shall have no duty to review, ascertain or confirm the Issuers’ compliance with, or the breach of, any representation, warranty or
covenant made in this Indenture. 
 SECTION 4.05 Taxes. The Issuers shall pay, and shall cause each of their Restricted
Subsidiaries to pay, prior to delinquency, all material taxes, charges, assessments, and governmental levies except such as are contested in good faith and by appropriate negotiations or proceedings and with respect to which appropriate reserves
have been taken in accordance with GAAP or where the failure to effect such payment is not adverse in any material respect to the Holders of the Notes. 
 SECTION 4.06 Stay, Extension and Usury Laws. The Issuers and each of the Guarantors covenant (to the extent that they may lawfully do so) that they shall not at any time insist upon, plead, or in
any manner whatsoever claim or take the benefit or advantage of, any stay, extension or 

  
 -57-

 
usury law wherever enacted, now or at any time hereafter in force, that may affect the covenants or the performance of this Indenture; and the Issuers and each of the Guarantors (to the extent
that they may lawfully do so) hereby expressly waive all benefit or advantage of any such law, and covenant that they shall not, by resort to any such law, hinder, delay or impede the execution of any power herein granted to the Trustee, but shall
suffer and permit the execution of every such power as though no such law has been enacted. 
 SECTION 4.07 Limitation on
Restricted Payments. After the Release Date, CDW shall not, and shall not permit any of its Restricted Subsidiaries to, directly or indirectly: 
 (a) declare or pay any dividend or make any other distribution on account of CDW’s or any of its Restricted Subsidiaries’ Equity Interests, including any dividend or distribution payable in
connection with any merger or consolidation (other than (i) dividends or distributions by CDW payable in Equity Interests (other than Disqualified Stock) of CDW or in options, warrants or other rights to purchase such Equity Interests (other
than Disqualified Stock), (ii) dividends or distributions by a Restricted Subsidiary payable to CDW or any other Restricted Subsidiary or (iii), in the case of any dividend or distribution payable on or in respect of any class or series of
Equity Interests issued by a Restricted Subsidiary other than a Wholly Owned Subsidiary, pro rata dividends or distributions to minority stockholders of such Restricted Subsidiary (or owners of an equivalent interest in the case of a
Subsidiary that is an entity other than a corporation), provided that CDW or one of its Restricted Subsidiaries receives at least its pro rata share of such dividend or distribution in accordance with its Equity Interests in
such class or series of securities); 
 (b) purchase, redeem or otherwise acquire or retire for value any Equity
Interests of CDW or any direct or indirect parent entity of CDW held by any Person (other than by a Restricted Subsidiary), including in connection with any merger or consolidation; 

(c) make any principal payment on, or redeem, repurchase, defease or otherwise acquire or retire for value, in each case
prior to any scheduled repayment, sinking fund payment or maturity, any Subordinated Indebtedness (other than (x) Indebtedness permitted under clause (7) of the definition of “Permitted Debt” or (y) the purchase, repurchase
or other acquisition or retirement of Subordinated Indebtedness purchased in anticipation of satisfying a sinking fund obligation, principal installment or final maturity, in each case due within one year of the date of purchase, repurchase,
acquisition or retirement); or 
 (d) make any Restricted Investment 

(all such payments and other actions set forth in these clauses (a) through (d) being collectively referred to as “Restricted
Payments”), unless, at the time of and after giving effect to such Restricted Payment: 
 (1) no Default
or Event of Default has occurred and is continuing or would occur as a consequence of such Restricted Payment; 

(2) CDW would, at the time of such Restricted Payment and after giving pro forma effect thereto as if such Restricted
Payment had been made at the beginning of the applicable four-quarter period, have been permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in the first paragraph of
Section 4.09 hereof; and 

  
 -58-

 (3) such Restricted Payment, together with the aggregate amount of all other
Restricted Payments made by CDW and its Restricted Subsidiaries after December 17, 2010 (excluding Restricted Payments permitted by clauses (2), (3), (4), (5), (6), (7), (9), (11), (13), (14), (15), (16) and (17) of the next
succeeding paragraph; provided that the calculation of Restricted Payments shall also exclude the amounts paid or distributed pursuant to clause (1) of the next paragraph to the extent that the declaration of such dividend or other
distribution shall have previously been included as a Restricted Payment), is less than the sum, without duplication, of: 
 (a) 50% of the Consolidated Net Income of CDW for the period (taken as one accounting period) from January 1, 2011 to the end of CDW’s most recently ended fiscal quarter for which internal
financial statements are available at the time of such Restricted Payment (or, in the case such Consolidated Net Income for such period is a deficit, minus 100% of such deficit), plus 

(b) 100% of the aggregate net cash proceeds and the fair market value, as determined in good faith by the Board of
Directors of CDW, of property and marketable securities received by CDW after December 17, 2010 from the issue or sale of (x) Equity Interests of CDW (including Retired Capital Stock (as defined below) but excluding (i) cash proceeds
received from the sale of Equity Interests of CDW and, to the extent actually contributed to CDW, Equity Interests of any direct or indirect parent company of CDW to members of management, directors or consultants of CDW, any direct or indirect
parent company of CDW and the Subsidiaries of CDW after December 17, 2010, in each case to the extent such amounts have been applied to Restricted Payments made in accordance with clause (4) of the next succeeding paragraph, (ii) cash
proceeds received from the sale of Refunding Capital Stock (as defined below) to the extent such amounts have been applied to Restricted Payments made in accordance with clause (2) of the next succeeding paragraph, (iii) Designated
Preferred Stock, (iv) the Cash Contribution Amount and (v) Disqualified Stock) or (y) debt securities of CDW that have been converted into or exchanged for Equity Interests of CDW (other than Refunding Capital Stock or Equity
Interests or convertible debt securities of Parent or any other direct or indirect parent company sold to a Restricted Subsidiary or Parent and other than Disqualified Stock or Designated Preferred Stock or debt securities that have been converted
into Disqualified Stock or Designated Preferred Stock), plus 
 (c) 100% of the aggregate amount of cash
and the fair market value, as determined in good faith by the Board of Directors of CDW, of property and marketable securities contributed to the capital of CDW after December 17, 2010 (other than (i) by a Restricted Subsidiary,
(ii) any Excluded Contributions, (iii) any Disqualified Stock, (iv) any Refunding Capital Stock, (v) any Designated Preferred Stock, (vi) the Cash Contribution Amount and (vii) cash proceeds applied to Restricted
Payments made in accordance with clause (4) of the next succeeding paragraph), plus 
 (d) to the
extent not already included in Consolidated Net Income, 100% of the aggregate amount received in cash and the fair market value, as determined in good faith by the Board of Directors of CDW, of property and marketable securities received after
December 17, 2010 by means of (A) the sale or other disposition (other than to CDW or a Restricted Subsidiary) of, or interest, return, profits, distribution, income or similar amounts in respect of, Restricted Investments made by CDW or
its Restricted Subsidiaries and repurchases and redemptions of such Restricted Investments from CDW 

  
 -59-

 
or its Restricted Subsidiaries and repayments of loans or advances which constitute Restricted Investments of CDW or its Restricted Subsidiaries or (B) the sale (other than to CDW or a
Restricted Subsidiary) of the Capital Stock of an Unrestricted Subsidiary or a distribution from an Unrestricted Subsidiary (other than, in each case, to the extent the Investment in such Unrestricted Subsidiary was made by a Restricted Subsidiary
pursuant to clause (10) of the next succeeding paragraph or to the extent such Investment constituted a Permitted Investment) or a dividend or other distribution from an Unrestricted Subsidiary, plus 

(e) in the case of the redesignation of an Unrestricted Subsidiary as a Restricted Subsidiary or the merger or
consolidation of an Unrestricted Subsidiary into CDW or a Restricted Subsidiary or the transfer of assets of an Unrestricted Subsidiary to CDW or a Restricted Subsidiary, the fair market value of the Investment in such Unrestricted Subsidiary, as
determined by the Board of Directors of CDW in good faith at the time of the redesignation of such Unrestricted Subsidiary as a Restricted Subsidiary or at the time of such merger, consolidation or transfer of assets (other than an Unrestricted
Subsidiary to the extent the Investment in such Unrestricted Subsidiary was made by a Restricted Subsidiary pursuant to clause (10) of the next succeeding paragraph or to the extent such Investment constituted a Permitted Investment).

 The preceding provisions will not prohibit: 

(1) the payment of any dividend or other distribution within 60 days after the date of declaration thereof, if at the date
of declaration such payment would have complied with the provisions of this Indenture; 
 (2) (A) the redemption,
prepayment, repurchase, retirement or other acquisition of any Equity Interests of CDW or any direct or indirect parent of CDW (“Retired Capital Stock”) or Subordinated Indebtedness in exchange for or out of the net cash proceeds of
the substantially concurrent sale (other than to a Restricted Subsidiary or CDW) of Equity Interests of CDW or contributions to the equity capital of CDW (in each case, other than Disqualified Stock and the Cash Contribution Amount)
(“Refunding Capital Stock”) and (B) the declaration and payment of dividends on the Retired Capital Stock out of the net cash proceeds of the substantially concurrent sale (other than to a Subsidiary of CDW or to an employee
stock ownership plan or any trust established by CDW or any of its Subsidiaries) of Refunding Capital Stock; 

(3) the redemption, prepayment, repurchase or other acquisition or retirement of Subordinated Indebtedness made by
exchange for, or out of the proceeds of the substantially concurrent sale of, new Indebtedness of the borrower thereof which is incurred in compliance with Section 4.09 hereof so long as (A) such new Indebtedness is subordinated to
the Notes and any related Guarantees thereof, in each case at least to the same extent as such Subordinated Indebtedness so prepaid, redeemed, repurchased, acquired or retired, (B) such new Indebtedness has a final scheduled maturity date equal
to or later than the final scheduled maturity date of the Subordinated Indebtedness being so prepaid, redeemed, repurchased, acquired or retired, (C) such new Indebtedness has a Weighted Average Life to Maturity equal to or greater than the
remaining Weighted Average Life to Maturity of the Subordinated Indebtedness being so prepaid, redeemed, repurchased, acquired or retired and (D) the principal amount, including any accrued and unpaid interest, of such Indebtedness does not
exceed the principal amount (or accreted value, if applicable) of such Subordinated Indebtedness being so redeemed, repurchased, acquired or retired, plus the amount of any premium (including tender premiums) and any fees and expenses incurred in
connection with the issuance of such new Indebtedness; 

  
 -60-

 (4) a Restricted Payment to pay for the repurchase, retirement, redemption
or other acquisition or retirement for value of Equity Interests of CDW or any of its direct or indirect parent companies held by any future, present or former employee, director or consultant of CDW, any Subsidiary or any of its direct or indirect
parent companies (or their permitted transferees, assigns, estates or heirs) pursuant to the Krasny Plan, any management unit purchase agreement, management equity plan or stock option plan or any other management or employee benefit agreement,
agreement or arrangement (including, for the avoidance of doubt, any principal and interest payable on any notes issued by CDW or any direct or indirect parent company in connection with any such repurchase, retirement or other acquisition or
retirement), provided, however, that the aggregate amount of Restricted Payments made under this clause (4) does not exceed in any calendar year $50,000,000 (which shall increase to $70,000,000 subsequent to the consummation of an
underwritten Equity Offering by CDW or any direct or indirect parent company of CDW) with unused amounts in any calendar year being carried over to succeeding calendar years subject to a maximum (without giving effect to the following proviso) of
$70,000,000 in any calendar year (which shall increase to $90,000,000 subsequent to the consummation of an underwritten Equity Offering by CDW or any direct or indirect parent company of CDW); and provided, further, that such amount in
any calendar year may be increased by an amount not to exceed (A) the cash proceeds from the sale of Equity Interests (other than Disqualified Stock) of CDW and, to the extent contributed to CDW, Equity Interests of any of its direct or
indirect parent companies, in each case to members of management, directors or consultants of CDW, any of its Subsidiaries or any of its direct or indirect parent companies that occurs after December 17, 2010 plus (B) the cash proceeds of
“key man” life insurance policies received by CDW or its Restricted Subsidiaries after December 17, 2010 (provided that CDW may elect to apply all or any portion of the aggregate increase contemplated by clauses (A) and
(B) above in any calendar year) (it being understood that the forgiveness of any debt by such Person shall not be a Restricted Payment hereunder) less (C) the amount of any Restricted Payments previously made pursuant to clauses
(A) and (B) of this clause (4); 
 (5) the declaration and payment of dividends to holders of any class
or series of Disqualified Stock of CDW or any Restricted Subsidiary issued or incurred in accordance with Section 4.09 hereof to the extent such dividends are included in the definition of “Fixed Charges” for such entity;

 (6) the declaration and payment of dividends or distributions to holders of any class or series of Designated
Preferred Stock (other than Disqualified Stock) issued after December 17, 2010 and the declaration and payment of dividends to any direct or indirect parent company of CDW the proceeds of which will be used to fund the payment of dividends to
holders of any class or series of Designated Preferred Stock (other than Disqualified Stock) of any direct or indirect parent company of CDW issued after December 17, 2010; provided, however, that (A) for the most recently
ended four full fiscal quarters for which internal financial statements are available immediately preceding the date of issuance of such Designated Preferred Stock, after giving effect to such issuance (and the payment of dividends or distributions
thereon) on a pro forma basis, CDW would have had a Fixed Charge Coverage Ratio of at least 2.0 to 1.0 and (B) the aggregate amount of dividends declared and paid pursuant to this clause (6) does not exceed the net cash proceeds actually
received by CDW from any such sale of Designated Preferred Stock (other than Disqualified Stock) issued after December 17, 2010; 

  
 -61-

 (7) repurchases of Equity Interests deemed to occur upon exercise of stock
options or warrants if such Equity Interests represent a portion of the exercise price of such options or warrants; 
 (8) the payment of dividends on CDW’s Common Stock (or the payment of dividends to any direct or indirect parent company of CDW, as the case may be, to fund the payment by any such parent company of
CDW of dividends on such entity’s Common Stock) following the first public offering of CDW’s Common Stock or the common stock of any of its direct or indirect parent companies after the Release Date, of up to 6% per annum of the net
cash proceeds received by or contributed to CDW after the Release Date in any such public offering, other than public offerings of common stock of CDW (or any direct or indirect parent company of CDW) registered on Form S-4 or Form S-8 and other
than any public sale constituting an Excluded Contribution; 
 (9) Investments that are made with Excluded
Contributions; 
 (10) other Restricted Payments after December 17, 2010 in an aggregate amount not to
exceed the greater of: (i) $75,000,000; and (ii) 1.0% of Total Assets; 
 (11) distributions or
payments of Receivables Fees and purchase of any assets in connection with a Receivables Facility made in the ordinary course of business by the applicable Receivables Subsidiary; 

(12) the repurchase, prepayment, redemption or other acquisition or retirement for value of any Subordinated Indebtedness
or Disqualified Stock pursuant to provisions similar to those described in Sections 3.09, 4.10 and 4.14 hereof; provided that a Change of Control Offer or Asset Sale Offer, as applicable, has been made and all Notes
tendered by Holders of the Notes in connection with a Change of Control Offer or Asset Sale Offer, as applicable, have been repurchased, redeemed or acquired for value; 

(13) the declaration and payment of dividends or the payment of other distributions by CDW to, or the making of loans or
advances to, any of their respective direct or indirect parents or the equity interest holders thereof in amounts required for any direct or indirect parent companies or the equity interest holders thereof to pay, in each case without duplication,

 (i) franchise taxes and other fees, taxes and expenses required to maintain their corporate existence;

 (ii) federal, foreign, state and local income or franchise taxes (or any alternative tax in lieu thereof);
provided, that, in each fiscal year, the amount of such payments shall be equal to the amount that CDW and its Restricted Subsidiaries and its Unrestricted Subsidiaries (in the latter case only to the extent of amounts actually received by
CDW and its Restricted Subsidiaries from its Unrestricted Subsidiaries) would be required to pay in respect of federal, foreign, state and local income or franchise taxes if such entities were corporations paying taxes separately from any parent
entity at the highest combined applicable federal, foreign, state, local or franchise tax rate for such fiscal year; 
 (iii) customary salary, bonus, severance, indemnification obligations and other benefits payable to officers and employees of any direct or indirect parent company of CDW and any payroll, social security
or similar taxes thereof to the extent such salaries, bonuses, severance, indemnification obligations and other benefits are reasonably attributable to the ownership or operation of CDW and its Restricted Subsidiaries; 

  
 -62-

 (iv) general corporate operating and overhead costs and expenses of any
direct or indirect parent company of CDW to the extent such costs and expenses are reasonably attributable to the ownership or operation of CDW and its Restricted Subsidiaries; 

(v) amounts payable to the Sponsors pursuant to the Management Agreement as in effect on the Closing Date; 

(vi) fees and expenses other than to Affiliates of CDW related to (1) any equity or debt offering of such parent
entity (whether or not successful), (2) any Investment otherwise permitted under this Section 4.07 (whether or not successful) and (3) any transaction of the type described in under Section 5.01 hereof; 

(vii) cash payments in lieu of issuing fractional shares in connection with the exercise of warrants, options or other
securities convertible into or exchangeable for Equity Interests of CDW or any direct or indirect parent company of CDW; 
 (viii) amounts to finance Investments otherwise permitted to be made pursuant to this Indenture; provided, that (1) such Restricted Payment shall be made substantially concurrently with the
closing of such Investment and (2) such direct or indirect parent company shall, immediately following the closing thereof, cause (x) all property acquired (whether assets or Equity Interests) to be contributed to the capital of CDW or one
of its Restricted Subsidiaries or (y) the merger of the Person formed or acquired into CDW or one of its Restricted Subsidiaries (to the extent not prohibited by Section 5.01 hereof) in order to consummate such Investment;
(3) such direct or indirect parent company and its Affiliates (other than CDW or a Restricted Subsidiary) receives no consideration or other payment in connection with such transaction, (4) any property received by CDW shall not increase
amounts available for Restricted Payments pursuant to clause (3) of the first paragraph of this Section 4.07 and (5) such Investment shall be deemed to be made by CDW or such Restricted Subsidiary by another paragraph of this
paragraph (other than pursuant to clause (9) hereof) or pursuant to the definition of “Permitted Investments” (other than clause (11) thereof); 

(ix) reasonable and customary fees payable to any directors of any direct or indirect parent of CDW and reimbursement of
reasonable out-of-pocket costs of the directors of any direct or indirect parent of CDW in the ordinary course of business, to the extent reasonably attributable to the ownership or operation of CDW and its Restricted Subsidiaries; and 

(x) reasonable and customary indemnities to directors, officers and employee of any direct or indirect parent of CDW in
the ordinary course of business, to the extent reasonably attributable to the ownership or operation of CDW and its Restricted Subsidiaries; 
 (14) cash payments in lieu of the issuance of fractional shares in connection with the exercise of warrants, options or other securities convertible into or exchangeable for Capital Stock of CDW;
provided, however, that any such cash payment shall not be for the purpose of evading the limitation of this Section 4.07 (as determined in good faith by the Board of Directors of CDW); 

  
 -63-

 (15) distributions, by dividends or otherwise, of Capital Stock of, or
Indebtedness owed to CDW or a Restricted Subsidiary by, Unrestricted Subsidiaries (other than Unrestricted Subsidiaries, the primary assets of which are cash and/or Cash Equivalents); 

(16) cash dividends or other distributions on CDW’s or any Restricted Subsidiary’s Capital Stock used to, or the
making of loans the proceeds of which will be used to, fund the payment of fees and expenses, including any severance and indemnification obligations or deferred compensation, incurred in connection with this offering, in each case to the extent
permitted (to the extent applicable) by Section 4.11 hereof; 
 (17) [Reserved]; 

(18) Investments in Unrestricted Subsidiaries having an aggregate fair market value, taken together with all other
Investments made pursuant to this clause (18) that are at the time outstanding, without giving effect to any distribution pursuant to clause (15) of this paragraph or the sale of an Unrestricted Subsidiary to the extent the proceeds of
such sale do not consist of cash or marketable securities, not to exceed $75,000,000 at the time of such Investment (with the fair market value of each Investment being measured at the time made and without giving effect to subsequent changes in
value); 
 (19) payments and distributions to dissenting stockholders pursuant to applicable law, pursuant to or
in connection with a consolidation, merger or transfer of all or substantially all of the assets of CDW and its Restricted Subsidiaries taken as a whole that complies with the terms of this Indenture, including Section 5.01 hereof; and

 (20) in connection with the operation of the Krasny Plan, (i) tax withholding payments made in cash to
the United States Internal Revenue Service in connection with in-kind withholding for payments to participants in Equity Interests of any indirect or direct parent of CDW and (ii) payments made in cash to the Circle of Service Foundation, Inc.
representing the amount of the net tax benefit to CDW as a result of the implementation and continuing operation of the Krasny Plan; 

provided, however, that at the time of, and after giving effect to, any Restricted Payment permitted under clauses (5), (6), (8), (10),
(12) and (13)(v) and (vi) above, no default which, with the passage of time would be an Event of Default, or an Event of Default shall have occurred and be continuing or would occur as a consequence thereof. 

The amount of all Restricted Payments (other than cash) will be the fair market value on the date of the Restricted Payment of the
asset(s) or securities proposed to be transferred or issued by CDW or such Subsidiary, as the case may be, pursuant to the Restricted Payment. The fair market value of any assets or securities that are required to be valued by this
Section 4.07 will be determined in good faith by the Board of Directors of CDW. 
 CDW will not permit any
Unrestricted Subsidiary to become a Restricted Subsidiary except pursuant to the second to last sentence of the definition of “Unrestricted Subsidiary.” For purposes of designating any Restricted Subsidiary as an Unrestricted Subsidiary,
all outstanding Investments by CDW and the Restricted Subsidiaries (except to the extent repaid) in the Subsidiary so designated will be deemed to be Restricted Payments in an amount determined as set forth in the second paragraph of the

  
 -64-

 
definition of “Investments.” Such designation will be permitted only if a Restricted Payment in such amount would be permitted at such time under this Section 4.07 or the
definition of “Permitted Investments” and if such Subsidiary otherwise meets the definition of an Unrestricted Subsidiary. Unrestricted Subsidiaries will not be subject to any of the restrictive covenants of this Indenture. 

For the avoidance of doubt, any dividend or distribution otherwise permitted pursuant to this Section 4.07 may be in the form
of a loan. 
 SECTION 4.08 Dividend and Other Payment Restrictions Affecting Restricted Subsidiaries. From and after the
Release Date, CDW shall not, and shall not permit any of its Restricted Subsidiaries to, directly or indirectly, create or permit to exist or become effective any consensual encumbrance or restriction on the ability of any such Restricted Subsidiary
to: 
 (1) pay dividends or make any other distributions on its Capital Stock to CDW or any of its Restricted
Subsidiaries, or with respect to any other interest or participation in, or measured by, its profits, or pay any Indebtedness owed to CDW or any of its Restricted Subsidiaries; 

(2) make loans or advances to CDW or any of its Restricted Subsidiaries; or 

(3) sell, lease or transfer any of its properties or assets to CDW or any of its Restricted Subsidiaries. 

However, the preceding restrictions will not apply to encumbrances or restrictions existing under or by reason of: 

(1) contractual encumbrances or restrictions in effect (x) pursuant to the Existing Senior Note Indenture, the Senior
Secured Note Indenture, the Senior Subordinated Note Indenture, the ABL Facility, the Senior Secured Term Loan or related documents as in effect on the Release Date or (y) on the Release Date, including, without limitation, pursuant to
Indebtedness in existence on the Release Date; 
 (2) this Indenture, the Notes and the Guarantees (including any
Exchange Notes with respect to the Notes and related exchange Guarantees); 
 (3) purchase money obligations or
other obligations described in clause (4) of the second paragraph of Section 4.09 hereof that, in each case, impose restrictions of the nature discussed in clause (3) above in the first paragraph of this
Section 4.08 on the property so acquired; 
 (4) applicable law or any applicable rule, regulation or
order; 
 (5) any agreement or other instrument of a Person acquired by CDW or any Restricted Subsidiary in
existence at the time of such acquisition (but not created in connection therewith or in contemplation thereof or to provide all or a portion of the funds or credit support utilized to consummate such acquisition), which encumbrance or restriction
is not applicable to any Person, or the properties or assets of any Person, other than the Person, or the property or assets of the Person, so acquired; 

  
 -65-

 (6) contracts for the sale of assets, including without limitation,
customary restrictions with respect to a Subsidiary pursuant to an agreement that has been entered into for the sale or disposition of all or substantially all of the Capital Stock or assets of such Subsidiary; 

(7) Secured Indebtedness otherwise permitted to be incurred pursuant to Sections 4.09 and 4.12 hereof
that limits the right of the debtor to dispose of the assets securing such Indebtedness; 
 (8) restrictions on
cash or other deposits or net worth imposed by customers under contracts entered into in the ordinary course of business; 
 (9) other Indebtedness or Preferred Stock of any Restricted Subsidiary (i) that is a Guarantor that is incurred subsequent to the Release Date pursuant to Section 4.09 hereof or
(ii) that is incurred by a Foreign Subsidiary of CDW subsequent to the Release Date pursuant to Section 4.09 hereof, provided, that the terms of such agreements are not materially more restrictive, taken as a whole, with
respect to such encumbrances or restrictions than those in the Existing Senior Note Indenture, the Senior Secured Note Indenture, the Senior Subordinated Note Indenture, the ABL Facility, the Senior Secured Term Loan or this Indenture on the Release
Date; 
 (10) customary provisions in joint venture agreements and other similar agreements entered into in the
ordinary course of business; 
 (11) customary provisions contained in leases, subleases, licenses or asset sale
agreements and other agreements; 
 (12) restrictions and conditions by the terms of the documentation governing
any Receivables Facility that in the good faith determination of CDW are necessary or advisable to effect such Receivables Facility; 
 (13) negative pledges and restrictions on Liens in favor of any holder of Indebtedness permitted under this Indenture; and 

(14) any encumbrances or restrictions of the type referred to in clauses (1), (2) and (3) of the first paragraph
of this Section 4.08 hereof imposed by any amendments, modifications, restatements, renewals, increases, supplements, refundings, replacements or refinancings of the contracts, instruments or obligations referred to in clauses
(1) through (13) above; provided that the encumbrances or restrictions imposed by such amendments, modifications, restatements, renewals, increases, supplements, refundings, replacements or refinancings are, in the good faith
judgment of the Board of Directors of CDW, not materially less favorable to the Holders of the Notes than encumbrances and restrictions contained in such predecessor agreements and do not affect CDW’s and Guarantors’ ability, taken as a
whole, to make payments of interest and scheduled payments of principal in respect of the Notes, in each case as and when due; provided further, however, that with respect to agreements existing on the Release Date, any
refinancings or amendments thereof contain such encumbrances or restrictions that are not materially less favorable to the Holders of the Notes than the encumbrances or restrictions contained in such agreements as in effect on the Release Date.

 SECTION 4.09 Limitation on Incurrence of Indebtedness and Issuance of Preferred Stock. From and after the Release
Date, CDW shall not, and shall not permit any of its Restricted Subsidiaries to, directly or indirectly, create, incur, issue, assume, guarantee or otherwise become directly or indirectly liable, contingently or otherwise, with respect to
(collectively, “incur”) any Indebtedness 

  
 -66-

 
(including Acquired Debt) and will not permit any of its Restricted Subsidiaries to issue any shares of Preferred Stock; provided, however, that CDW and any Restricted Subsidiary
may incur Indebtedness (including Acquired Debt) and issue Preferred Stock if the Fixed Charge Coverage Ratio of CDW and its Restricted Subsidiaries (on a consolidated basis) for CDW’s most recently ended four full fiscal quarters for which
internal financial statements are available immediately preceding the date on which such additional Indebtedness is incurred or such Preferred Stock is issued would have been at least 2.0 to 1.0 determined on a pro forma basis (including a pro forma
application of the net proceeds therefrom), as if the additional Indebtedness had been incurred or the Preferred Stock had been issued, as the case may be, and the application of proceeds therefrom had occurred at the beginning of such four-quarter
period; provided further, that any incurrence of Indebtedness or issuance of Preferred Stock by a Restricted Subsidiary that is not a Guarantor pursuant to this paragraph is subject to the limitations of set forth in the fifth
paragraph of this Section 4.09. 
 The first paragraph of this Section 4.09 will not prohibit the
incurrence of any of the following items of Indebtedness (collectively, “Permitted Debt”): 

(1) (x) the incurrence by CDW or a Restricted Subsidiary of Indebtedness pursuant to the ABL Facility by CDW or any
Restricted Subsidiary; provided that immediately after giving effect to any such incurrence, the aggregate principal amount of all Indebtedness incurred under this clause (x) and then outstanding does not exceed the greater of
(A) $900,000,000 less all principal payments with respect to such Indebtedness made following the Closing Date pursuant to clause (1) of the second paragraph under Section 4.10(a) hereof, less the aggregate principal amount of
outstanding obligations under or in respect of any Receivables Facility and (B) (i) 85% of the book value of accounts receivable of CDW and its Restricted Subsidiaries plus (ii) 65% of the book value of the inventory of CDW and its
Restricted Subsidiaries and (y) the incurrence by CDW or a Restricted Subsidiary of Indebtedness pursuant to the Senior Secured Term Loan by CDW or any Restricted Subsidiary; provided that after giving effect to any such incurrence, the
aggregate principal amount of all Indebtedness incurred under this clause (y) and then outstanding does not exceed $2,200,000,000 less all principal payments with respect to such Indebtedness made following the Closing Date pursuant to clause
(1) of the second paragraph under Section 4.10(a) hereof; 
 (2) the incurrence by CDW and the
Guarantors of Indebtedness represented by the aggregate principal amount of the Notes assumed in the Assumption (including any Guarantees thereof) and any notes to be issued in exchange for the Notes (including any Guarantee thereof) pursuant to the
Registration Rights Agreement; 
 (3) any Indebtedness of CDW and its Restricted Subsidiaries in existence on the
Release Date (other than Indebtedness described in clause (1) or (2) above), including the Senior Secured Notes, the Existing Senior Notes and the Senior Subordinated Notes; 

(4) Indebtedness (including Capitalized Lease Obligations) incurred by CDW or any Restricted Subsidiary to finance the
purchase, construction, lease or improvement of property (real or personal) or equipment that is used or useful in a Permitted Business in an aggregate principal amount that, when aggregated with the principal amount of all other Indebtedness then
outstanding and incurred pursuant to this clause (4) does not exceed $50,000,000 at any time outstanding, so long as such Indebtedness exists at the date of such purchase, construction, lease or improvement, or is created within 270 days
thereafter; 

  
 -67-

 (5) Indebtedness incurred by CDW or any Restricted Subsidiary constituting
reimbursement obligations with respect to letters of credit issued in the ordinary course of business, including without limitation letters of credit in respect of workers’ compensation claims, health, disability or other employee benefits or
property, casualty or liability insurance or self-insurance or other Indebtedness with respect to reimbursement-type obligations regarding workers’ compensation claims, or letters of credit in the nature of security deposit (or similar deposit
or security) given to a lessor under an operating lease of real property under which such Person is a lessee; provided, however, that upon the drawing of such letters of credit or the incurrence of such Indebtedness, such obligations
are reimbursed within 45 days following such drawing or incurrence; 
 (6) Indebtedness arising from agreements
of CDW or a Restricted Subsidiary providing for indemnification, adjustment of purchase price, earn-outs or similar obligations, in each case, incurred or assumed in connection with the disposition or acquisition of any business, assets or a
Subsidiary, other than guarantees of Indebtedness incurred by any Person acquiring all or any portion of such business, assets or a Subsidiary for the purpose of financing such acquisition; provided, however, that (A) such
Indebtedness is not reflected on the balance sheet (other than by application of Interpretation Number 45 of the Financial Accounting Standards Board (commonly known as FIN 45) as a result of an amendment to an obligation in existence on the Release
Date) of CDW or any Restricted Subsidiary (contingent obligations referred to in a footnote to financial statements and not otherwise reflected on the balance sheet will not be deemed to be reflected on such balance sheet for purposes of this clause
(6)) and (B) in the case of a disposition, the maximum assumable liability in respect of all such Indebtedness shall at no time exceed the gross proceeds, including non-cash proceeds (the fair market value of such non-cash proceeds being
measured at the time received and without giving effect to any subsequent changes in value), actually received by CDW and any Restricted Subsidiaries in connection with such disposition; 

(7) Indebtedness of CDW owed to and held by any Restricted Subsidiary or Indebtedness of a Restricted Subsidiary owed to
and held by CDW or any other Restricted Subsidiary; provided, however, that (A) any subsequent issuance or transfer of any Capital Stock or any other event that results in any such Restricted Subsidiary ceasing to be a Restricted
Subsidiary or any subsequent transfer of any such Indebtedness (except to CDW or a Restricted Subsidiary or any pledge of such Indebtedness constituting a Permitted Lien) shall be deemed, in each case, to constitute the incurrence of such
Indebtedness not permitted by this clause (7) and (B) if CDW or a Guarantor is the obligor on such Indebtedness, such Indebtedness is expressly subordinated in right of payment to all obligations of CDW or such Guarantor with respect to
the Notes; 
 (8) shares of Preferred Stock of a Restricted Subsidiary issued to CDW or a Restricted Subsidiary;
provided that any subsequent issuance or transfer of any Capital Stock or any other event which results in any such Restricted Subsidiary ceasing to be a Restricted Subsidiary or any other subsequent transfer of any such shares of Preferred
Stock (except to CDW or a Restricted Subsidiary) shall be deemed in each case to be an issuance of such shares of Preferred Stock not permitted by this clause (8); 

(9) Hedging Obligations and/or Cash Management Obligations of CDW or any Restricted Subsidiary (excluding Hedging
Obligations entered into for speculative purposes); 
 (10) obligations in respect of customs, stay, bid, appeal,
performance and surety bonds, appeal bonds and other similar types of bonds and performance and completion guarantees and other obligations of a like nature provided by CDW or any Restricted Subsidiary or obligations in respect of letters of credit
related thereto, in each case in the ordinary course of business or consistent with past practice; 

  
 -68-

 (11) Indebtedness of CDW or any Restricted Subsidiary or Preferred Stock of
any Restricted Subsidiary not otherwise permitted hereunder in an aggregate principal amount or liquidation preference which, when aggregated with the principal amount and liquidation preference of all other Indebtedness and Preferred Stock then
outstanding and incurred pursuant to this clause (11) does not at any one time outstanding exceed $150,000,000; provided that any Indebtedness or Preferred Stock incurred pursuant to this clause (11) shall cease to be deemed
incurred or outstanding for purposes of this clause (11) but shall be deemed incurred and outstanding for the purposes of the first paragraph of this Section 4.09 from and after the first date on which CDW or such Restricted
Subsidiary could have incurred such Indebtedness or issued such Disqualified Stock or Preferred Stock under the first paragraph of this Section 4.09 without reliance on this clause (11); 

(12) (x) any guarantee by CDW or a Restricted Subsidiary of Indebtedness or other obligations of any Restricted Subsidiary
so long as the incurrence of such Indebtedness or other obligations incurred by such Restricted Subsidiary is permitted under the terms of this Indenture; provided that if such Indebtedness is by its express terms subordinated in right of
payment to the Notes or the Guarantee of such Restricted Subsidiary or CDW, as applicable, any such guarantee of such Guarantor with respect to such Indebtedness shall be subordinated in right of payment to such Guarantor’s Guarantee with
respect to the Notes substantially to the same extent as such Indebtedness is subordinated to the Notes or the Guarantee of such Restricted Subsidiary, as applicable, and (y) any guarantee by a Restricted Subsidiary of Indebtedness or other
obligations of CDW incurred in accordance with the terms of this Indenture; 
 (13) the incurrence by CDW or any
Restricted Subsidiary of Indebtedness or Preferred Stock that serves to refund, replace or refinance any Indebtedness incurred as permitted under the first paragraph of this Section 4.09 and clauses (2) and (3) above, this
clause (13) and clauses (14) and (19) below or any Indebtedness issued to so refund, replace or refinance such Indebtedness including additional Indebtedness incurred to pay premiums and fees in connection therewith (the
“Refinancing Indebtedness”) prior to its respective maturity; provided, however, that such Refinancing Indebtedness (A) has a Weighted Average Life to Maturity at the time such Refinancing Indebtedness is incurred
which is not less than the earlier of (x) the Stated Maturity of the Indebtedness being refunded or refinanced, and (y) 90 days after the Stated Maturity of any Notes then outstanding, (B) to the extent such Refinancing Indebtedness
refinances Subordinated Indebtedness or Indebtedness pari passu to the Notes or the Guarantees, such Refinancing Indebtedness is Subordinated Indebtedness or pari passu to the Notes or the Guarantees at least to the same
extent as the Indebtedness being refinanced or refunded, (C) shall not include (x) Indebtedness or Preferred Stock of a Subsidiary that is not a Guarantor that refinances Indebtedness or Preferred Stock of CDW or a Guarantor or
(y) Indebtedness or Preferred Stock of CDW or a Restricted Subsidiary that refinances Indebtedness or Preferred Stock of an Unrestricted Subsidiary, and (D) shall not be in a principal amount in excess of the principal amount of, premium,
if any, accrued interest on, and related fees and expenses of, the Indebtedness being refunded, replaced or refinanced (including any premium, expenses, costs and fees incurred in connection with such refund, replacement or refinancing); 

(14) (i) Indebtedness or Preferred Stock of a Person incurred and outstanding on or prior to the date on which such Person
was acquired by, CDW or any Restricted Subsidiary or merged into CDW or a Restricted Subsidiary in accordance with the terms of this Indenture or 

  
 -69-

 
(ii) Indebtedness of CDW or any Restricted Subsidiary incurred in connection with or in contemplation of, or to provide all or any portion of the funds or credit support utilized to
consummate, the acquisition by CDW or such Restricted Subsidiary of property used or useful in a Permitted Business (whether through the direct purchase of assets or the purchase of Capital Stock of, or merger or consolidation with, any Person
owning such assets); provided, that after giving pro forma effect to such incurrence of Indebtedness (x) CDW would be permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth
in the first paragraph of this Section 4.09 or (y) the Fixed Charge Coverage Ratio would be equal to or greater than the Fixed Charge Coverage Ratio immediately prior to such acquisition; 

(15) Indebtedness arising from the honoring by a bank or financial institution of a check, draft or similar instrument
drawn against insufficient funds in the ordinary course of business; provided that such Indebtedness is extinguished within two (2) Business Days of its incurrence; 

(16) Indebtedness of CDW or any of its Restricted Subsidiaries supported by a letter of credit issued pursuant to the ABL
Facility in a principal amount not in excess of the stated amount of such letter of credit; 
 (17) Indebtedness
incurred by a Receivables Subsidiary in connection with a Receivables Facility that is not recourse to CDW or any of its Restricted Subsidiaries, other than a Receivables Subsidiary (except for Standard Receivables Undertakings); 

(18) Indebtedness consisting of promissory notes issued by CDW or any Guarantor to current or former officers, directors,
consultants and employees, their respective estates, spouses, former spouses, heirs or family members to finance the purchase or redemption of Equity Interests of CDW or any of its direct or indirect parent companies permitted by
Section 4.07 hereof; 
 (19) Contribution Indebtedness (it being understood that any Contribution
Indebtedness issued pursuant to this clause (19) shall cease to be deemed incurred or outstanding for purposes of this clause (19) but shall be deemed incurred for the purposes of the first paragraph of this Section 4.09 hereof
from and after the first date on which CDW or such Restricted Subsidiary could have incurred such Contribution Indebtedness under the first paragraph of this Section 4.09 hereof without reliance on this clause (19)); 

(20) Indebtedness of CDW or any Restricted Subsidiary to the extent the proceeds of such Indebtedness are deposited and
used to defease the Notes as described in Article VIII hereof; 
 (21) Indebtedness of CDW or any
Restricted Subsidiary consisting of the financing of insurance premiums in the ordinary course of business; 

(22) cash management obligations and Indebtedness in respect of netting services, overdraft facilities, employee credit
card programs, Cash Pooling Arrangements or similar arrangements in connection with cash management and deposit accounts; provided that, with respect to any Cash Pooling Arrangements, the total amount of all deposits subject to any such Cash
Pooling Arrangement at all times equals or exceeds the total amount of overdrafts that may be subject to such Cash Pooling Arrangements; 
 (23) Indebtedness representing deferred compensation to employees of CDW or any Restricted Subsidiary incurred in the ordinary course of business; and 

  
 -70-

 (24) Indebtedness under (x) the Existing Inventory Financing Agreements
and (y) other inventory financing agreements which, when aggregated with the principal amount of all other Indebtedness outstanding and incurred pursuant to clause (x) and this clause (y), does not at any one time outstanding exceed
$400,000,000. 
 For purposes of determining compliance with this Section 4.09 in the event that an item of proposed
Indebtedness meets the criteria of more than one of the categories of Permitted Debt described in clauses (1) through (24) above, or is entitled to be incurred pursuant to the first paragraph of this Section 4.09, CDW will be
permitted to classify and later reclassify such item of Indebtedness in any manner that complies with this Section 4.09, and such item of Indebtedness will be treated as having been incurred pursuant to only one of such categories.
Accrual of interest or dividends, the accretion of accreted value and the payment of interest or dividends in the form of additional Indebtedness (including any PIK interest incurred under the Existing Senior Note Indenture) or Preferred Stock will
not be deemed to be an incurrence of Indebtedness or Preferred Stock for purposes of this Section 4.09 and Section 4.12 hereof. Notwithstanding the foregoing, Indebtedness under the ABL Facility and the Senior Secured Term
Loan outstanding on the Release Date will be deemed to have been incurred on such date in reliance on the exception provided by clause (1) of the definition of “Permitted Debt” and any such Indebtedness that was outstanding under the
ABL Facility as of the Release Date may not later be reclassified. Additionally, all or any portion of any other item of Indebtedness may later be reclassified as having been incurred pursuant to the first paragraph of this Section 4.09
or under any category of Permitted Debt described in clauses (1) through (24) above so long as such Indebtedness is permitted to be incurred pursuant to such provision at the time of reclassification. 

For purposes of determining compliance with any U.S. dollar restriction on the incurrence of Indebtedness where the Indebtedness incurred
is denominated in a different currency, the amount of such Indebtedness will be the U.S. Dollar Equivalent determined on the date of the incurrence of such Indebtedness; provided, however, that if any such Indebtedness denominated
in a different currency is subject to a currency agreement with respect to U.S. dollars covering all principal, premium, if any, and interest payable on such Indebtedness, the amount of such Indebtedness expressed in U.S. dollars will be as provided
in such currency agreement. The principal amount of any refinancing Indebtedness incurred in the same currency as the Indebtedness being refinanced will be the U.S. Dollar Equivalent of the Indebtedness being refinanced, except to the extent
that (1) such U.S. Dollar Equivalent was determined based on a currency agreement, in which case the refinancing Indebtedness will be determined in accordance with the preceding sentence, and (2) the principal amount of the
refinancing Indebtedness exceeds the principal amount of the Indebtedness being refinanced, in which case the U.S. Dollar Equivalent of such excess will be determined on the date such refinancing Indebtedness is incurred. The maximum amount of
Indebtedness that CDW and its Restricted Subsidiaries may incur pursuant to this Section 4.09 shall not be deemed to be exceeded, with respect to any outstanding Indebtedness, solely as a result of fluctuations in the exchange rate of
currencies. 
 Notwithstanding anything to the contrary contained in the first paragraph of this Section 4.09 or in
the definition of Permitted Debt, no Restricted Subsidiary of CDW that is not a Subsidiary Guarantor shall incur any Indebtedness or issue any Preferred Stock in reliance on the first paragraph of this Section 4.09 or clause (14) of
the definition of Permitted Debt (the “Limited Non-Guarantor Debt Exceptions”) if the amount of such Indebtedness or Preferred Stock, when aggregated with the amount of all other Indebtedness or Preferred Stock outstanding under
such Limited Non-Guarantor Debt Exceptions, together with any Refinancing Indebtedness in respect thereof, would exceed the greater of (i) $100,000,000 and (ii) 5.0% of Total Net Tangible Assets of CDW’s Subsidiaries; provided,
that in no event shall any Indebtedness or Preferred Stock of any Restricted Subsidiary that is not a Guarantor (x) existing at the time it became a Restricted Subsidiary or (y) assumed in connection

  
 -71-

 
with any acquisition, merger or acquisition of minority interests of a non-Wholly Owned Subsidiary (and in the case of clauses (x) and (y), not created in contemplation of such Person
becoming a Restricted Subsidiary or such acquisition, merger or acquisition of minority interests) be deemed to be Indebtedness outstanding under the Limited Non-Guarantor Debt Exceptions for purposes of this paragraph. 

Under this Indenture, (i) unsecured Indebtedness shall not be treated as subordinated or junior to Secured Indebtedness merely by
virtue of the fact that such Indebtedness is unsecured, and (ii) Senior Indebtedness shall not be treated as subordinated or junior to any other Senior Indebtedness merely by virtue of the fact such Indebtedness has a junior priority with
respect to the same collateral. 
 SECTION 4.10 Asset Sales. 

(a) From and after the Release Date, CDW will not, and will not permit any of its Restricted Subsidiaries to, consummate an Asset Sale
unless: 
 (1) CDW (or such Restricted Subsidiary, as the case may be) receives consideration at the time of such
Asset Sale at least equal to the fair market value of the assets or Equity Interests issued or sold or otherwise disposed of; and 
 (2) at least 75% of the consideration received in the Asset Sale by CDW or such Restricted Subsidiary is in the form of cash or Cash Equivalents. 

Within 365 days after the receipt of any Net Proceeds from an Asset Sale, CDW or such Restricted Subsidiary, as the case may be, may
apply those Net Proceeds at its option: 
 (1) (i) to reduce or fulfill Obligations under Secured
Indebtedness of an Issuer or any Restricted Subsidiary, (ii) to reduce Obligations under Indebtedness of a Restricted Subsidiary that is not a Guarantor (other than Indebtedness owed to an Issuer or another Restricted Subsidiary) or
(iii) to reduce or fulfill Obligations under Senior Pari Passu Indebtedness (provided that if an Issuer or any Guarantor shall so reduce Obligations under unsecured Senior Pari Passu Indebtedness, CDW will equally and ratably reduce
Obligations under the Notes as provided under Section 3.07, through open-market purchases (provided that such purchases are at or above 100% of the principal amount thereof) or by making an offer (in accordance with the procedures set
forth below for an Asset Sale Offer) to all Holders to purchase at a purchase price equal to 100% of the principal amount thereof, plus accrued and unpaid interest and Additional Interest, if any, on the pro rata principal amount of
Notes), in each case other than Indebtedness owed to an Issuer, the Parent or any Restricted Subsidiary; 
 (2)
to an investment in Related Business Assets; and/or 
 (3) to an investment in (i) any one or more
businesses; provided that such investment in any business is in the form of the acquisition of Capital Stock and results in CDW or a Restricted Subsidiary owning an amount of the Capital Stock of such business such that such business
constitutes a Restricted Subsidiary, (ii) properties or (iii) assets that, in each of (i), (ii) and (iii), replace the businesses, properties and assets that are the subject of such Asset Sale (“Replacement Assets”).

 Any Net Proceeds from Asset Sales not applied or invested in accordance with the preceding paragraph within 365 days
from the date of the receipt of such Net Proceeds shall constitute “Excess Proceeds”; provided that if during such 365-day period CDW or a Restricted Subsidiary enter into a definitive binding agreement committing it to apply
such Net Proceeds in accordance with the 

  
 -72-

 
requirements of clause (2) or (3) above after such 365th day, such 365-day period will be extended with respect to the amount of Net Proceeds so committed for a period not to exceed 180
days until such Net Proceeds are required to be applied in accordance with such agreement (or, if earlier, until termination of such agreement). When the aggregate amount of Excess Proceeds exceeds $25.0 million, CDW or the applicable Restricted
Subsidiary shall make an offer to all Holders of the Notes and, if required by the terms of any Senior Pari Passu Indebtedness, to the holders of such Senior Pari Passu Indebtedness (an “Asset Sale Offer”), to purchase the maximum
aggregate principal amount of the Notes and such Senior Pari Passu Indebtedness that is a minimum of $2,000 or an integral multiple of $1,000 in excess thereof that may be purchased out of the Excess Proceeds. The offer price in any Asset Sale Offer
will be equal to 100% of the principal amount thereof, plus accrued and unpaid interest and Additional Interest, if any, to the date of purchase, and will be payable in cash. CDW or the applicable Restricted Subsidiary will commence an Asset Sale
Offer with respect to Excess Proceeds within thirty days after the date that Excess Proceeds exceed $25.0 million by mailing the notice required pursuant to the terms of this Indenture, with a copy to the Trustee. CDW or the applicable Restricted
Subsidiary may, in its sole discretion, satisfy the foregoing obligations with respect to any Net Proceeds from an Asset Sale by making an Asset Sale Offer with respect to such Net Proceeds prior to the expiration of the relevant 365-day period (or
such longer period provided above) or with respect to Excess Proceeds of $25.0 million or less. 
 To the extent that the
aggregate amount of Notes and such other Senior Pari Passu Indebtedness tendered pursuant to an Asset Sale Offer is less than the Excess Proceeds, the Issuers may use any remaining Excess Proceeds for general corporate purposes, subject to other
covenants contained in this Indenture. If the aggregate principal amount of Notes or other Senior Pari Passu Indebtedness surrendered by such holders thereof exceeds the amount of Excess Proceeds, the Trustee shall select the Notes and such other
Senior Pari Passu Indebtedness to be purchased on a pro rata basis based on the accreted value or principal amount of the Notes or such other Senior Pari Passu Indebtedness tendered. Upon completion of any such Asset Sale Offer, the
amount of Excess Proceeds shall be reset at zero. 
 (b) Pending the final application of any Net Proceeds of Asset Sales, CDW
or the applicable Restricted Subsidiary may temporarily reduce revolving credit borrowings or otherwise invest the Net Proceeds in any manner that is not prohibited by this Indenture. 

(c) For purposes of Section 4.10(a)(2), the amount of (i) any liabilities other than contingent liabilities (as shown on
CDW’s or the applicable Restricted Subsidiary’s most recent balance sheet or in the notes thereto) of CDW or any Restricted Subsidiary (other than liabilities that are by their terms contractually or effectively junior to the Notes or the
Guarantees) that are assumed by the transferee of any such assets and from which CDW and all Restricted Subsidiaries have been validly released by the applicable creditor(s) in writing, (ii) any securities received by CDW or such Restricted
Subsidiary from such transferee that are converted by CDW or Restricted Subsidiary into cash (to the extent of the cash received) within 180 days following the closing of such Asset Sale, (iii) any Related Business Assets or Replacement Assets,
and (iv) any Designated Non-cash Consideration received by CDW or any of its Restricted Subsidiaries in such Asset Sale having an aggregate fair market value (as determined in good faith by the Board of Directors of CDW), taken together with
all other Designated Non-cash Consideration received pursuant to this clause (iv) that is at that time outstanding, not to exceed the greater of (x) $75.0 million and (y) an amount equal to 2% of Total Assets of CDW on the date on
which such Designated Non-cash Consideration is received (with the fair market value of each item of Designated Non-cash Consideration being measured at the time received without giving effect to subsequent changes in value), shall be deemed to be
cash for purposes of determining whether the 75% cash or Cash Equivalents test has been satisfied and for no other purpose. 

  
 -73-

 (d) CDW or the applicable Restricted Subsidiary will comply with the requirements of Rule
14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with each repurchase of Notes pursuant to an Asset Sale Offer. To the extent that the
provisions of any securities laws or regulations conflict with the Asset Sale provisions of this Indenture, CDW or the applicable Restricted Subsidiary will comply with the applicable securities laws and regulations and will not be deemed to have
breached its obligations under the Asset Sale provisions of this Indenture by virtue of such conflict. 
 SECTION 4.11
Transactions with Affiliates. 
 (a) From and after the Release Date, CDW shall not, and shall not permit any of its
Restricted Subsidiaries to, make any payment to, or sell, lease, assign, transfer or otherwise dispose of any of its properties or assets to, or purchase any property or assets from, or enter into or make or amend any transaction, contract,
agreement, understanding, loan, advance or guarantee with, or for the benefit of, any Affiliate of CDW (each of the foregoing, an “Affiliate Transaction”) involving aggregate consideration in excess of $10,000,000, unless:

 (1) such Affiliate Transaction is on terms that are not materially less favorable to CDW or the relevant
Restricted Subsidiary than those that would have been obtained in a comparable transaction by CDW or Restricted Subsidiary with an unrelated Person; and 
 (2) with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate consideration in excess of $25,000,000, a majority of the Board of Directors of CDW (and, if
any, a majority of the disinterested members of the Board of Directors of CDW with respect to such Affiliate Transaction) have determined in good faith that the criteria set forth in the immediately preceding clause (1) are satisfied and have
approved the relevant Affiliate Transaction as evidenced by a Board Resolution. 
 The following items will not be deemed to be
Affiliate Transactions and, therefore, will not be subject to the provisions of the prior paragraph: 
 (1) any
transaction with CDW, a Restricted Subsidiary or joint venture or similar entity which would constitute an Affiliate Transaction solely because CDW or a Restricted Subsidiary owns an equity interest in or otherwise controls such Restricted
Subsidiary, joint venture or similar entity; 
 (2) Restricted Payments and Permitted Investments permitted by
this Indenture; 
 (3) the payment to the Sponsors and any of their respective officers or Affiliates by CDW or
any of its Restricted Subsidiaries, of management, consulting, monitoring and advisory fees, termination or indemnification payments and related reasonable expenses pursuant to the Management Agreement and as in effect on the Release Date or any
amendment thereto (so long as any such amendment (x) does not increase the amount of fees payable to the Sponsors and (y) is not, taken as a whole, less advantageous to the Holders of the Notes in any material respect than the Management
Agreement) or other agreements as in effect on the Release Date or any amendment thereto (so long as any such amendment is not, taken as a whole, less advantageous to the Holders of the Notes in any material respect than the original agreement as in
effect on the Release Date); 

  
 -74-

 (4) payments in respect of employment, severance and any other compensation
arrangements with, and fees and expenses paid to, and indemnities provided on behalf of (and entering into related agreements with) officers, directors, employees or consultants of CDW, any of its direct or indirect parent companies, or any
Restricted Subsidiary, in the ordinary course of business and made in good faith by the Board of Directors of CDW or senior management thereof; 
 (5) payments made by CDW or any Restricted Subsidiary to the Sponsors for any financial advisory, financing, underwriting or placement services or in respect of other investment banking activities,
including, without limitation, in connection with acquisitions or divestitures, which payments are approved by majority of the Board of Directors of CDW (and, if any, a majority of the disinterested members of the Board of Directors of CDW with
respect to such Affiliate Transaction) in good faith; 
 (6) transactions in which CDW or any Restricted
Subsidiary delivers to the Trustee a letter from an Independent Financial Advisor stating that such transaction is fair to CDW or such Restricted Subsidiary from a financial point of view or meets the requirements of the first paragraph of this
Section 4.11; 
 (7) payments or loans (or cancellations of loans) to employees or consultants of CDW
or any of its direct or indirect parent companies or any Restricted Subsidiary which are approved by the Board of Directors of CDW in good faith and which are otherwise permitted under this Indenture; 

(8) payments made or performance under any agreement as in effect on the Release Date (other than the Management Agreement
(which are permitted under clause (3) of the second paragraph of this Section 4.11)) that are disclosed in Schedule I hereto, including with additional parties that may be added subsequent to the Release Date and any
amendment thereto to the extent such an amendment is not adverse to the interests of the Holders of the Notes in any material respect; 
 (9) transactions with customers, clients, suppliers, or purchasers or sellers of goods or services (including Parent and its Subsidiaries), in each case in the ordinary course of business and otherwise in
compliance with the terms of this Indenture that are fair to CDW or its Restricted Subsidiaries, in the reasonable determination of the members of the Board of Directors of CDW or the senior management thereof, or are on terms at least as favorable
as would reasonably have been entered into at such time with an unaffiliated party; 
 (10) if otherwise
permitted hereunder, the issuance of Equity Interests (other than Disqualified Stock) of CDW to any Permitted Holder, any director, officer, employee or consultant of CDW or its Subsidiaries or any other Affiliates of CDW (other than a Subsidiary);

 (11) any transaction permitted by Section 5.01 hereof; 

(12) any transaction with a Receivables Subsidiary effected as part of a Receivables Facility; 

(13) payments by CDW and its Restricted Subsidiaries to each other pursuant to tax sharing agreements or arrangements
among Parent and its subsidiaries on customary terms (including, without limitation, transfer pricing initiatives); and 
 (14) transactions among Foreign Subsidiaries for tax planning and tax efficiency purposes. 

  
 -75-

 SECTION 4.12 Liens. From and after the Release Date, CDW shall not, and shall not
permit any Restricted Subsidiary to, directly or indirectly, create, incur, assume or suffer to exist any Lien (except Permitted Liens) on any asset or property of CDW or any Restricted Subsidiary securing Indebtedness unless the Notes are equally
and ratably secured with (or on a senior basis to, in the case of Obligations subordinated in right of payment to the Notes) the Obligations so secured until such time as such Obligations are no longer secured by a Lien. The preceding sentence will
not require CDW or any Restricted Subsidiary to secure the Notes if the Lien consists of a Permitted Lien. Any Lien created for the benefit of the Holders of the Notes pursuant to this Section 4.12 shall provide by its terms that such
Lien shall be automatically and unconditionally released and discharged upon the release and discharge of the initial Lien that gave rise to the Obligation to so secure the Notes. 

SECTION 4.13 Issuers Existence. Subject to Section 4.14 hereof and Article V hereof, the Issuers shall do or cause to
be done all things necessary to preserve and keep in full force and effect (i) their company existence, and the corporate, partnership, limited liability company or other existence of each of the Restricted Subsidiaries, in accordance with the
respective organizational documents (as the same may be amended from time to time) of each of the Issuers or any such Restricted Subsidiary and (ii) the rights (charter and statutory), licenses and franchises of each of the Issuers and the
Restricted Subsidiaries; provided that the Issuers shall not be required to preserve any such right, license or franchise, or the corporate, partnership or other existence of any of its Restricted Subsidiaries (other than the Issuers), if the
Board of Directors of CDW in good faith shall determine that the preservation thereof is no longer desirable in the conduct of the business of the Issuers and the Restricted Subsidiaries, taken as a whole and that the loss thereof is not adverse in
any material respect to the Holders; provided, further, that the Escrow Issuer may dissolve its existence after the Assumption. 
 SECTION 4.14 Offer to Repurchase Upon Change of Control. If, after the Release Date, a Change of Control occurs, unless CDW at such time has given notice of redemption under
Section 3.07 hereof with respect to all outstanding Notes, each Holder of Notes will have the right to require CDW to repurchase all or any part (equal to $2,000 or integral multiples of $1,000 in excess thereof) of that Holder’s
Notes pursuant to an offer on the terms set forth in this Indenture (a “Change of Control Offer”). In the Change of Control Offer, CDW will offer a payment (a “Change of Control Payment”) in cash equal to 101% of
the aggregate principal amount of the Notes repurchased plus accrued and unpaid interest and Additional Interest, if any, on the Notes repurchased, to the date of purchase. Within 30 days following any Change of Control, unless CDW at such time has
given notice of redemption under Section 3.07 hereof with respect to all outstanding Notes, or, at CDW’s option and as set forth below, in advance of a Change of Control, CDW will mail a notice to each Holder, with a copy to the
Trustee, describing the transaction or transactions that constitute the Change of Control and offering to repurchase Notes on the date of such Change of Control Payment specified in the notice, which date shall be no earlier than 30 days and no
later than 60 days from the date such notice is mailed (the “Change of Control Payment Date”), pursuant to the procedures required by this Indenture and described in such notice. CDW will comply with the requirements of Rule 14e-1
under the Exchange Act and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase of the Notes as a result of a Change of Control. To the extent that the
provisions of any securities laws or regulations conflict with the Change of Control provisions of this Indenture, CDW will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under the
Change of Control provisions of this Indenture by virtue of such conflict. 
 On the Change of Control Payment Date, CDW will,
to the extent lawful: 
 (1) accept for payment all Notes or portions of Notes properly tendered pursuant to the
Change of Control Offer; 

  
 -76-

 (2) deposit with the Paying Agent an amount equal to the Change of Control
Payment in respect of all Notes or portions of Notes properly tendered; and 
 (3) deliver or cause to be
delivered to the Trustee the Notes properly accepted together with an Officers’ Certificate stating the aggregate principal amount of Notes or portions of Notes being purchased by CDW. 

The Paying Agent will promptly mail to each Holder of Notes properly tendered the Change of Control Payment for such Notes, and the
Trustee will promptly authenticate and mail (or cause to be transferred by book entry) to each Holder a new Note equal in principal amount to any unpurchased portion of the Notes surrendered, if any; provided that each new Note will be in a
minimum principal amount of $2,000 or integral multiples of $1,000 in excess thereof. CDW shall publicly announce the results of the Change of Control Offer on or as soon as practicable after the Change of Control Payment Date. 

CDW shall not be required to make a Change of Control Offer upon a Change of Control if (i) a third party makes the Change of
Control Offer in the manner, at the times and otherwise in compliance with the requirements set forth in this Indenture applicable to a Change of Control Offer made by CDW and purchases all Notes properly tendered and not withdrawn under the Change
of Control Offer or (ii) a notice of redemption has been given pursuant to Section 3.07 hereof unless and until there is a default in the payment of the applicable redemption price. A Change of Control Offer may be made in advance
of a Change of Control and may be conditional upon the occurrence of a Change of Control if a definitive agreement is in place for the Change of Control at the time the Change of Control Offer is made. 

The provisions described above that require CDW to make a Change of Control Offer following a Change of Control will be applicable
whether or not any other provisions of this Indenture are applicable. 
 SECTION 4.15 Additional Guarantees. From and
after the Release Date, CDW shall cause (i) each of its Domestic Subsidiaries (other than any Unrestricted Subsidiary) that incurs any Indebtedness in excess of $25,000,000 (other than Indebtedness permitted to be incurred pursuant to clauses
(5), (6), (7), (8), (9), (10) and (15) of the second paragraph of Section 4.09 hereof) and (ii) each Restricted Subsidiary that guarantees any Indebtedness of CDW or any of the Guarantors, in each case, within ten
(10) Business Days of such incurrence of any such Indebtedness or guarantee of such Indebtedness, to execute and deliver to the Trustee a Guarantee (including a supplemental indenture in form of Exhibit D hereto), together with an
Opinion of Counsel, pursuant to which such Restricted Subsidiary will unconditionally Guarantee, on a joint and several basis, the full and prompt payment of the principal of, premium, if any, and interest on the Notes and all other obligations
under this Indenture on the same terms and conditions as those set forth in this Indenture. 
 SECTION 4.16 Limitation of
Activities of FinanceCo. From and after the Release Date, FinanceCo shall not acquire or hold any material assets, voluntarily take any action to become liable for any material obligations or engage in any business activities or operations;
provided that FinanceCo may be a co-obligor with respect to Indebtedness (including, for the avoidance of doubt, the Notes) if CDW is a primary obligor on such Indebtedness, the net proceeds of such Indebtedness are received by CDW or one or
more of the Restricted Subsidiaries and such Indebtedness is otherwise permitted to be incurred under this Indenture. 
 SECTION
4.17 Limitation on Business Activities. From and after the Release Date, CDW shall not, and shall not permit any Restricted Subsidiary to, engage in any business other than a Permitted Business, except to such extent as would not be material
to CDW and its Subsidiaries taken as a whole. 

  
 -77-

 SECTION 4.18 Further Instruments and Acts. Upon request by the Trustee, CDW shall
execute and deliver such further instruments and do such further acts as may be reasonably necessary or proper to carry out more effectively the purposes of this Indenture. 
 SECTION 4.19 Suspension of Covenants. 
 (a) During any period of time that
(i) the Notes have Investment Grade Ratings from both Rating Agencies and (ii) no Default has occurred and is continuing under this Indenture (the occurrence of the events described in the foregoing clauses (i) and (ii) being
collectively referred to as a “Covenant Suspension Event”), the Issuers and the Restricted Subsidiaries shall not be subject to Sections 4.07, 4.08, 4.09, 4.10, 4.11, 4.15, 4.17 and
clause (4) of Section 5.01(a) (collectively, the “Suspended Covenants”). 
 (b) In the event
that the Issuers and the Restricted Subsidiaries are not subject to the Suspended Covenants under this Indenture for any period of time as a result of the foregoing, and on any subsequent date (the “Reversion Date”) one or both of
the Rating Agencies withdraw their Investment Grade Rating or downgrade the rating assigned to the Notes below an Investment Grade Rating, then the Issuers and the Restricted Subsidiaries shall thereafter again be subject to the Suspended Covenants
under this Indenture. The period of time between the Covenant Suspension Event and the Reversion Date is referred to herein as the “Suspension Period.” 
 (c) On each Reversion Date, all Indebtedness incurred, or Disqualified Stock or preferred stock issued, during the Suspension Period will be classified as having been incurred or issued pursuant to the
first paragraph of Section 4.09. To the extent such Indebtedness or Disqualified Stock or preferred stock would not be so permitted to be incurred or issued pursuant to the first paragraph of Section 4.09, such Indebtedness
or Disqualified Stock or preferred stock will be deemed to have been outstanding on the Release Date, so that it is classified as permitted under clause (3) of the second paragraph of Section 4.09. Calculations made after the
Reversion Date of the amount available to be made as Restricted Payments under Section 4.07 will be made as though Section 4.07 had been in effect since the Release Date but not during the Suspension Period. Accordingly,
Restricted Payments made during the Suspension Period will not reduce the amount available to be made as Restricted Payments under Section 4.07(d)(3) and items specified in (a) through (e) of Section 4.07(d)(3) will
not increase the amount available to be made thereunder. As described above, however, no Default or Event of Default will be deemed to have occurred as a result of the Reversion Date occurring on the basis of any actions taken or the continuance of
any circumstances resulting from actions taken or the performance of obligations under agreements entered into by the Issuers or any of the Restricted Subsidiaries during the Suspension Period (other than agreements to take actions after the
Reversion Date that would not be permitted outside of the Suspension Period entered into in contemplation of the Reversion Date). 
 (d) For purposes of Section 4.10, on the Reversion Date, the unutilized Excess Proceeds amount will be reset to zero. 
 (e) During the Suspension Period no Restricted Subsidiary may be designated as an Unrestricted Subsidiary. 
 (f) CDW shall deliver promptly to the Trustee an Officers’ Certificate notifying it of any Covenant Suspension Event or Reversion Date, under this Section 4.19 which shall specify exactly
which covenants (including section references) are subject to a Covenant Suspension Event or a Reversion Date and the dates on and from which they occur. 

  
 -78-

 SECTION 4.20 Activities of Escrow Issuer Prior to Release Date and Assumption. Prior
to the Release Date and Assumption, primary activities of the Escrow Issuer shall be limited to issuing the Notes, issuing capital stock to, and receiving capital contributions from its direct or indirect parent, performing its obligations in
respect of the Notes under the Indenture, the Escrow Agreement and the Purchase Agreement, consummating the Assumption or redeeming the Notes in connection with a Special Mandatory Redemption, and conducting other activities as are necessary or
appropriate to carry out the activities described in this sentence and maintain its corporate existence. Prior to the Assumption, the Escrow Issuer shall not issue any debt other than the Notes or own, hold or otherwise have any interest in any
assets other than the Escrow Account and the Escrow Proceeds therein. 
 SECTION 4.21 Escrow of Proceeds. The cash
proceeds to the Escrow Issuer of the offering of the Notes (the “Escrow Proceeds”) shall be placed in escrow until the Release Date or a Special Mandatory Redemption. The terms of the escrow shall be set forth in the Escrow
Agreement, pursuant to which the Escrow Issuer shall deposit with the Escrow Agent on the Issue Date, the Escrow Proceeds. The Escrow Issuer shall grant the Trustee, for its benefit and the benefit of Holders, a first priority security interest in
the escrow account (the “Escrow Account”) and all deposits therein to secure the Special Mandatory Redemption. 

SECTION 4.22 Release Conditions. The Escrow Issuer shall only be entitled to direct the Escrow Agent to release all of the Escrow
Proceeds (the “Escrow Release”) upon satisfaction (or in the case of clause (c) below, waiver by the Escrow Issuer in its sole discretion) of the following conditions, which shall be certified in writing by the Escrow Issuer in
an Officers’ Certificate contemporaneously with the release of the Escrow Proceeds on or prior to the Escrow End Date (such date, the “Release Date”): 
 (a) the Assumption has been consummated and the Issuers, as obligors, have assumed all of the obligations of the Escrow Issuer under the Notes and this Indenture and the guarantees of the Notes by the
Guarantors are in full force and effect; 
 (b) no Default or Event of Default shall have occurred and be continuing under the
Indenture; and 
 (c) $665,138,000 (the “Maximum Tender Amount”) or more in aggregate principal amount of
Existing Senior Notes are validly tendered and not validly withdrawn in the Tender Offer. 
 To the extent that CDW or any
Restricted Subsidiary has incurred Indebtedness, made any Restricted Payments, consummated any Asset Sale or otherwise taken any action or engaged in any activities during the period beginning on the Issue Date and ending on the Release Date, such
actions and activities shall be treated and classified under this Indenture (including but not limited to impacting relevant baskets and determining whether a Default or Event of Default would have occurred as of the Release Date for purposes of the
release conditions above), as if this Indenture and the covenants set forth herein had applied to CDW and the Restricted Subsidiaries during such period. For purposes of the foregoing, (i) CDW will be deemed to have been the direct or indirect
owner of all of the Restricted Subsidiaries of CDW for all relevant periods and (ii) all Subsidiaries of CDW shall be deemed to be Restricted Subsidiaries from the Issue Date through the Release Date. 

  
 -79-

 ARTICLE V 
 SUCCESSORS 
 SECTION 5.01 Merger, Consolidation or Sale of All or
Substantially All Assets. 
 (a) From and after the Release Date, CDW may not, directly or indirectly: (1) consolidate
or merge with or into another Person (whether or not CDW is the surviving corporation); or (2) sell, assign, transfer, convey, lease or otherwise dispose of all or substantially all of the properties or assets of CDW and its Restricted
Subsidiaries, taken as a whole, in one or more related transactions, to another Person unless: 
 (1) (a) CDW is
the surviving corporation; or (b) the Person formed by or surviving any such consolidation or merger (if other than CDW) or to which such sale, assignment, transfer, conveyance, lease or other disposition has been made is a corporation or
limited liability company organized or existing under the laws of the United States, any state of the United States, the District of Columbia or any territory thereof (CDW or such Person, including the Person to which such sale, assignment,
transfer, conveyance, lease or other disposition has been made, as the case may be, being herein called the “Successor Company”); 
 (2) the Successor Company (if other than CDW) assumes all the obligations of CDW under the Notes, this Indenture and the Registration Rights Agreement pursuant to agreements reasonably satisfactory to the
Trustee; 
 (3) immediately after such transaction, no Default or Event of Default exists; 

(4) immediately after giving pro forma effect to such transaction and any related financing transactions, as
if such transactions had occurred at the beginning of the applicable four-quarter period either, (i) the Successor Company would be permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test
set forth in the first paragraph of Section 4.09 hereof or (ii) the Fixed Charge Coverage Ratio for the Successor Company and its Restricted Subsidiaries would be equal to or greater than the Fixed Charge Coverage Ratio for CDW and
its Restricted Subsidiaries immediately prior to such transaction; and 
 (5) each Guarantor (except if it is the
other party to the transactions described above, in which case clause (2) above shall apply) shall have by supplemental indenture confirmed that its Guarantee shall apply to such Person’s obligations under the Notes, this Indenture and the
Registration Rights Agreement; 
 (b) Notwithstanding the foregoing, (i) clauses (3), (4) and (5) above will not
be applicable to: (a) any Restricted Subsidiary consolidating with, merging into or selling, assigning, transferring, conveying, leasing or otherwise disposing of all or part of its properties and assets to CDW or to another Guarantor; and
(b) CDW merging with an Affiliate solely for the purpose of reincorporating CDW, as the case may be, in another jurisdiction; and (ii) any Foreign Subsidiary may consolidate with or merge into or transfer all or part of its properties and
assets to any other Foreign Subsidiary; provided that if the Foreign Subsidiary so consolidating, merging or transferring all or part of its properties and assets is a Foreign Subsidiary that is a Guarantor, such Foreign Subsidiary shall,
substantially simultaneously with such merger, transfer or disposition, terminate its Guarantee and otherwise be in compliance with the terms of this Indenture. 

  
 -80-

 (c) For purposes of this Section 5.01, the sale, lease, conveyance, assignment,
transfer or other disposition of all or substantially all of the properties and assets of one or more Restricted Subsidiaries of CDW, which properties and assets, if held by CDW instead of such Restricted Subsidiaries, would constitute all or
substantially all of the properties and assets of CDW on a consolidated basis, shall be deemed to be the sale, lease, conveyance, assignment, transfer or other disposition of all or substantially all of the properties and assets of CDW. 

(d) The predecessor company will be released from its obligations under this Indenture and the Notes and the Successor Company will
succeed to, and be substituted for, and may exercise every right and power of, CDW under this Indenture and the Notes, but, in the case of a lease of all or substantially all its assets, the predecessor company will not be released from the
obligation to pay the principal of and interest on the Notes. 
 (e) In connection with any consolidation or merger or any sale,
assignment, transfer, lease, conveyance or other disposition of all or substantially all of the assets of CDW contemplated by this Section 5.01, CDW shall execute and deliver to the Trustee a supplemental indenture, in form and
substance reasonably satisfactory to the Trustee, evidencing such succession together with an Officers’ Certificate and an Opinion of Counsel, each stating that such consolidation or merger or any sale, assignment, transfer, lease,
conveyance or other disposition of all or substantially all of the assets of CDW contemplated by this Section 5.01 and such supplemental indenture in respect thereto complies with this Section 5.01 and that all
conditions precedent herein provided for relating to such transaction or transactions have been complied with and that such supplemental indenture constitutes the legal, valid and binding obligation of the successor entity, subject to the customary
exceptions. 
 SECTION 5.02 Successor Corporation Substituted. Upon any consolidation or merger, or any sale, assignment,
transfer, lease, conveyance or other disposition of all or substantially all of the assets of CDW or a Guarantor in accordance with Section 5.01 hereof, the successor corporation formed by such consolidation or into or with which CDW is
merged or to which such sale, assignment, transfer, lease, conveyance or other disposition is made shall succeed to, and be substituted for (so that from and after the date of such consolidation, merger, sale, lease, conveyance or other disposition,
the provisions of this Indenture referring to “CDW” or the “Issuers” shall refer instead to the successor corporation and not to CDW), and shall exercise every right and power of, CDW under this Indenture with the same effect as
if such successor Person had been named as CDW; provided that the predecessor Issuer shall not be relieved from the obligation to pay the principal of and interest on the Notes except in the case of a sale, assignment, transfer, conveyance or
other disposition of all of CDW’s assets that meets the requirements of Section 5.01 hereof. 
 ARTICLE VI

 DEFAULTS AND REMEDIES 
 SECTION 6.01 Events of Default. Following the Assumption, the following events referred to in clause (1) through (7) inclusive of this Section 6.01 shall constitute an
“Event of Default.” 
 (1) Non-Payment of Principal. The Issuers default in payment when
due and payable, upon redemption, acceleration or otherwise, of principal of, or premium, if any, on the Notes; 

(2) Non-Payment of Interest. The Issuers default in the payment when due of interest or Additional Interest, if
any, on or with respect to the Notes and such default continues for a period of 30 days; 

  
 -81-

 (3) Specific Covenants. CDW defaults in the performance of, or
breaches any covenant, warranty or other agreement contained in, this Indenture (other than a default in the performance or breach of a covenant, warranty or agreement which is specifically dealt with in clauses (1) or (2) above) and such
default or breach continues for a period of 60 days after the notice specified below or 90 days with respect to the covenant described under Section 4.03 hereof; 

(4) Cross-Acceleration. A default under any mortgage, indenture or instrument under which there is issued or by
which there is secured or evidenced any Indebtedness for money borrowed by CDW or any Restricted Subsidiary or the payment of which is guaranteed by CDW or any Restricted Subsidiary (other than Indebtedness owed to CDW or a Restricted Subsidiary),
if (A) such default either (1) results from the failure to pay any principal and accrued and unpaid interest on such Indebtedness at its stated final maturity (after giving effect to any applicable grace periods) or (2) relates to an
obligation other than the obligation to pay principal and accrued and unpaid interest on any such Indebtedness at its stated final maturity and results in the holder or holders of such Indebtedness causing such Indebtedness to become due prior to
its stated maturity and (B) the principal amount of such Indebtedness, together with the principal amount of any other such Indebtedness in default for failure to pay principal at stated final maturity (after giving effect to any applicable
grace periods), or the maturity of which has been so accelerated, aggregates in excess of $100,000,000 (or its foreign currency equivalent) or more at any one time outstanding; 

(5) Judgments. The failure by CDW or any Significant Subsidiary to pay final judgments aggregating in excess of
$100,000,000 (other than any judgments covered by indemnities or insurance policies issued by reputable and creditworthy companies and as to which liability coverage has not been denied by the insurance company or indemnifying party), which final
judgments remain unpaid, undischarged and unstayed for a period of more than 60 days after the applicable judgment becomes final and non-appealable; 
 (6) Invalidity of Guarantees. The Guarantee of Parent or a Significant Subsidiary that is a Guarantor or any group of Subsidiaries that are Guarantors and that, taken together as of the date of the
most recent audited financial statements of CDW, would constitute a Significant Subsidiary ceases to be in full force and effect (except as contemplated by the terms hereof) or Parent or any Guarantor denies or disaffirms its obligations under this
Indenture or any Guarantee, other than by reason of the release of the Guarantee in accordance with the terms of this Indenture; or 
 (7) Insolvency and Bankruptcy Proceeding. (i) An Issuer, any Restricted Subsidiary that is a Significant Subsidiary or any group of Restricted Subsidiaries that, taken as a whole, would
constitute a Significant Subsidiary, pursuant to or within the meaning of any Bankruptcy Law: 
 (a) commences a
voluntary case, 
 (b) consents to the entry of an order for relief against it in an involuntary case,

 (c) consents to the appointment of a custodian of it or for all or substantially all of its property,

 (d) makes a general assignment for the benefit of its creditors, or 

  
 -82-

 (e) generally is not paying its debts as they become due; 

(ii) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that: 

(a) is for relief against an Issuer or any Restricted Subsidiary that is a Significant Subsidiary or any group of
Restricted Subsidiaries that, taken together, would constitute a Significant Subsidiary, in an involuntary case; 

(b) appoints a custodian of an Issuer or any Restricted Subsidiary that is a Significant Subsidiary or any group of
Restricted Subsidiaries that, taken together, would constitute a Significant Subsidiary or for all or substantially all of the property of CDW or any of its Restricted Subsidiaries; or 

(c) orders the liquidation of an Issuer or any Restricted Subsidiary that is a Significant Subsidiary or any group of
Restricted Subsidiaries that, taken together, would constitute a Significant Subsidiary and the order or decree remains unstayed and in effect for 60 consecutive days. 
 SECTION 6.02 Acceleration. If an Event of Default under Section 6.01 hereof (other than an Event of Default specified in Section 6.01(7) with respect to an Issuer) shall
occur and be continuing, the Trustee acting at the written direction of the Holders of at least 25% in aggregate principal amount of the outstanding Notes may declare the principal of the Notes and any accrued interest on the Notes to be due and
payable by notice in writing to CDW and the Trustee specifying the respective Event of Default and that it is a “notice of acceleration” (the “Acceleration Notice”), and the same shall become immediately due and payable.

 Upon such declaration of acceleration, the aggregate principal amount of, and accrued and unpaid interest and Additional
Interest, if any, on all of the outstanding Notes shall ipso facto become and be immediately due and payable in cash without any declaration or other act on the part of the Trustee or any Holder of the Notes. After such acceleration,
but before a judgment or decree based on acceleration, the Holders of a majority in aggregate principal amount of such outstanding Notes may, under certain circumstances, rescind and annul such acceleration if all Events of Default, other than the
nonpayment of accelerated principal of or interest on such Notes, have been cured or waived as provided in this Indenture. 

The Holders of a majority in aggregate principal amount of the Notes then outstanding by written notice to the Trustee may on behalf of
the Holders of all of the Notes waive any existing Default or Event of Default and its consequences under this Indenture and its consequences: 
 (1) if the rescission would not conflict with any judgment or decree; 
 (2) if all existing Events of Default have been cured or waived except nonpayment of principal or interest that has become due solely because of the acceleration; 

(3) to the extent the payment of such interest is lawful, interest on overdue installments of interest and overdue
principal, which has become due otherwise than by such declaration of acceleration, has been paid; 
 (4) if the
Issuers have paid the Trustee its reasonable compensation and reimbursed the Trustee for its expenses, disbursements and advances; and 

  
 -83-

 (5) in the event of the cure or waiver of an Event of Default of the type
described in Section 6.01(7) hereof, the Trustee shall have received an Officers’ Certificate and an Opinion of Counsel that such Event of Default has been cured or waived. 

No such rescission shall affect any subsequent Default or impair any right consequent thereto. 

In the event of any Event of Default specified in Section 6.01(4) hereof, such Event of Default and all consequences thereof
(excluding, however, any resulting payment default) will be annulled, waived and rescinded, automatically and without any action by the Trustee or the Holders of the Notes, if within 30 days after such Event of Default arose CDW delivers an
Officers’ Certificate to the Trustee stating that (x) the Indebtedness or guarantee that is the basis for such Event of Default has been discharged, (y) the Holders thereof have rescinded or waived the acceleration, notice or action
(as the case may be) giving rise to such Event of Default or (z) the default that is the basis for such Event of Default has been cured, it being understood that in no event shall an acceleration of the principal amount of the Notes as
described above be annulled, waived or rescinded upon the happening of any such events. 
 If an Event of Default specified in
Section 6.01(7) hereof with respect to an Issuer occurs and is continuing, then all unpaid principal of, and premium, if any, and accrued and unpaid interest and Additional Interest, if any, on all of the outstanding Notes shall ipso
facto become and be immediately due and payable without any declaration or other act on the part of the Trustee or any Holder of the Notes. 
 No Holder of any Note will have any right to institute any proceeding with respect to this Indenture or for any remedy thereunder, unless such Holder shall have previously given to the Trustee written
notice of a continuing Event of Default and unless also the Holders of at least 25% in aggregate principal amount of the then outstanding Notes shall have made written request, and offered reasonable indemnity, to the Trustee to institute such
proceeding as Trustee, and the Trustee shall not have received from the Holders of a majority in aggregate principal amount of the outstanding Notes a direction inconsistent with such request and shall have failed to institute such proceeding within
60 days. Such limitations do not apply, however, to a suit instituted by a Holder of a Note for enforcement of payment of the principal of (and premium, if any) or interest on such Note on or after the respective due dates expressed in such
Note. 
 In the case of any Event of Default occurring by reason of any willful action (or inaction) taken (or not taken) by or
on behalf of CDW with the intention of avoiding payment of the premium that CDW would have had to pay if CDW then had elected to redeem the Notes pursuant to Section 3.07 hereof, an equivalent premium shall also become and be immediately
due and payable to the extent permitted by law upon the acceleration of the Notes. 
 SECTION 6.03 Other Remedies. If an
Event of Default occurs and is continuing, the Trustee may pursue any available remedy to collect the payment of principal, premium, if any, interest and Additional Interest, if any, on the Notes or to enforce the performance of any provision of the
Notes or this Indenture. 
 The Trustee may maintain a proceeding even if it does not possess any of the Notes or does not
produce any of them in the proceeding. A delay or omission by the Trustee or any Holder of a Note in exercising any right or remedy accruing upon an Event of Default shall not impair the right or remedy or constitute a waiver of or acquiescence in
the Event of Default. All remedies are cumulative to the extent permitted by law. 

  
 -84-

 SECTION 6.04 Waiver of Past Defaults. Subject to Section 6.02 hereof,
Holders of not less than a majority in aggregate principal amount of the issued and then outstanding Notes by notice to the Trustee may on behalf of the Holders of all of the Notes waive any existing Default or Event of Default under this Indenture
and its consequences hereunder, except a default in the payment of the principal of, premium, if any, or interest and Additional Interest, if any, on, any Note. Upon any such waiver, such Default shall cease to exist, and any Event of Default
arising therefrom shall be deemed to have been cured for every purpose of this Indenture; but no such waiver shall extend to any subsequent or other Default or impair any right consequent thereon. 

SECTION 6.05 Control by Majority. Holders of a majority in aggregate principal amount of the then outstanding Notes may direct the
time, method and place of conducting any proceeding for any remedy available to the Trustee or of exercising any trust or power conferred on the Trustee. The Trustee, however, may (1) refuse to follow any direction that conflicts with law or
this Indenture or that the Trustee determines is unduly prejudicial to the rights of any other Holder of a Note or that would involve the Trustee in personal liability if the Trustee, being advised by counsel, reasonably determines that the action
or proceeding so directed may not lawfully be taken if the Trustee in good faith by its board of directors or trustees, executive committee, or a trust committee of directors or trustees and/or Responsible Officers shall determine that the action or
proceeding so directed would involve the Trustee in personal liability or expense for which it is not adequately indemnified, or (2) take any other action deemed proper by the Trustee which is not inconsistent with such direction. In case an
Event of Default shall occur (which shall not be cured), the Trustee will be required, in the exercise of its power, to use the degree of care of a prudent man in the conduct of his own affairs. Notwithstanding any provision to the contrary in this
Indenture, the Trustee is under no obligation to exercise any of its rights or powers under this Indenture at the request, order or direction of any Holder, unless such Holder shall offer to the Trustee security and indemnity satisfactory to it
against any loss, liability or expense. 
 SECTION 6.06 Limitation on Suits. Subject to Section 6.07 hereof,
no Holder of a Note may pursue any remedy with respect to this Indenture or the Notes unless: 
 (1) such Holder
has previously given the Trustee notice that an Event of Default is continuing or the Trustee receives such notice from CDW; 
 (2) Holders of at least 25% in principal amount of the total outstanding Notes have requested the Trustee to pursue the remedy; 

(3) Holders of the Notes have offered the Trustee reasonable security or indemnity reasonably satisfactory to it against
any loss, liability or expense; 
 (4) the Trustee has not complied with such request within 60 days after the
receipt thereof and the offer of security or indemnity; and 
 (5) Holders of a majority in principal amount of
the total outstanding Notes have not given the Trustee a direction inconsistent with such request within such 60-day period. 

A Holder of a Note may not use this Indenture to prejudice the rights of another Holder of a Note or to obtain a preference or priority
over another Holder of a Note. 
 SECTION 6.07 Rights of Holders of Notes to Receive Payment. Notwithstanding any other
provision of this Indenture, the right of any Holder of a Note to receive payment of principal of, premium, if any, and interest on the Note, on or after the respective due dates expressed in the Note (including in connection with an Asset Sale
Offer or a Change of Control Offer), or to bring suit for the enforcement of any such payment on or after such respective dates, shall not be impaired or affected without the consent of such Holder. 

  
 -85-

 SECTION 6.08 Collection Suit by Trustee. If an Event of Default specified in clauses
(1) or (2) or Section 6.01 hereof occurs and is continuing, the Trustee is authorized to recover judgment in its own name and as trustee of an express trust against the Issuers for the whole amount of principal of, premium, if
any, and interest remaining unpaid on the Notes and interest and Additional Interest, if any, on overdue principal and, to the extent lawful, interest and such further amount as shall be sufficient to cover the costs and expenses of collection,
including the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel. 
 SECTION
6.09 Restoration of Rights and Remedies. If the Trustee or any Holder has instituted any proceeding to enforce any right or remedy under this Indenture and such proceeding has been discontinued or abandoned for any reason, or has been
determined adversely to the Trustee or to such Holder, then and in every such case, subject to any determination in such proceedings, the Issuers, the Trustee and the Holders shall be restored severally and respectively to their former positions
hereunder and thereafter all rights and remedies of the Trustee and the Holders shall continue as though no such proceeding has been instituted. 
 SECTION 6.10 Rights and Remedies Cumulative. Except as otherwise provided with respect to the replacement or payment of mutilated, destroyed, lost or stolen Notes in Section 2.11
hereof, no right or remedy herein conferred upon or reserved to the Trustee or to the Holders is intended to be exclusive of any other right or remedy, and every right and remedy shall, to the extent permitted by law, be cumulative and in addition
to every other right and remedy given hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder, or otherwise, shall not prevent the concurrent assertion or employment of
any other appropriate right or remedy. 
 SECTION 6.11 Delay or Omission Not Waiver. No delay or omission of the Trustee
or of any Holder of any Note to exercise any right or remedy accruing upon any Event of Default shall impair any such right or remedy or constitute a waiver of any such Event of Default or an acquiescence therein. Every right and remedy given by
this Article or by law to the Trustee or to the Holders may be exercised from time to time, and as often as may be deemed expedient, by the Trustee or by the Holders, as the case may be. 

SECTION 6.12 Trustee May File Proofs of Claim. The Trustee is authorized to file such proofs of claim and other papers or
documents as may be necessary or advisable in order to have the claims of the Trustee (including any claim for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel) and the Holders of the Notes
allowed in any judicial proceedings relative to the Issuers (or any other obligor upon the Notes, including the Guarantors), its creditors or its property and shall be entitled and empowered to participate as a member in any official committee of
creditors appointed in such matter and to collect, receive and distribute any money or other securities or property payable or deliverable upon the conversion or exchange of the Notes on any such claims and any custodian in any such judicial
proceeding is hereby authorized by each Holder to make such payments to the Trustee, and in the event that the Trustee shall consent to the making of such payments directly to the Holders, to pay to the Trustee any amount due to it for the
reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 7.07 hereof. To the extent that the payment of any such compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 7.07 hereof out of the estate in any such proceeding, shall be

  
 -86-

 
denied for any reason, payment of the same shall be secured by a Lien on, and shall be paid out of, any and all distributions, dividends, money, securities and other properties that the Holders
may be entitled to receive in such proceeding whether in liquidation or under any plan of reorganization or arrangement or otherwise. Nothing herein contained shall be deemed to authorize the Trustee to authorize or consent to or accept or adopt on
behalf of any Holder any plan of reorganization, arrangement, adjustment or composition affecting the Notes or the rights of any Holder, or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding. 

SECTION 6.13 Application of Funds. If the Trustee collects any money pursuant to this Article VI, any such amounts received
shall be applied by the Trustee or any Agent in the following order: 
 First, to payment of that portion
of the Obligations under this Indenture and the Notes constituting fees, indemnities, expenses and other amounts (other than principal and interest, but including all reasonable fees, expenses and disbursements of any law firm or other external
legal counsel payable under Section 7.07 hereof) payable to each of the Trustee or such Agent (ratably among the Trustee or such Agent in proportion to the respective amounts described in this clause First payable to them); 

Second, to payment of that portion of the Obligations under this Indenture and the Notes constituting fees,
indemnities and other amounts (other than principal and interest) payable to the Holders of the Notes, ratably among them in proportion to the amounts described in this clause Second payable to them; 

Third, to payment of that portion of the Obligations under this Indenture and the Notes constituting accrued and
unpaid interest (including any default interest) on the Notes and ratably among the Holders in proportion to the respective amounts described in this clause Third payable to them; 

Fourth, to payment of that portion of the Obligations under this Indenture and the Notes constituting unpaid
principal of the Notes ratably among the Holders in proportion to the respective amounts described in this clause Fourth held by them; and 
 Fifth, to the payment of all other Obligations of the Holders that are due and payable to the Trustee and the other Holders on such date, ratably based upon the respective aggregate amounts
of all such Obligations owing to the Trustee and the other Holders on such date. 
 The Trustee may fix a record date and
payment date for any payment to Holders pursuant to this Section 6.13. 
 SECTION 6.14 Undertaking for Costs.
In any suit for the enforcement of any right or remedy under this Indenture or in any suit against the Trustee for any action taken or omitted by it as a Trustee, a court in its discretion may require the filing by any party litigant in the suit of
an undertaking to pay the costs of the suit, and the court in its discretion may assess reasonable costs, including reasonable attorneys’ fees and expenses, against any party litigant in the suit, having due regard to the merits and good faith
of the claims or defenses made by the party litigant. This Section 6.14 does not apply to a suit by the Trustee, a suit by a Holder of a Note pursuant to Section 6.07 hereof, or a suit by Holders of more than 10% in principal
amount of the then outstanding Notes. 

  
 -87-

 ARTICLE VII 
 TRUSTEE 
 SECTION 7.01 Duties of Trustee. 

(a) The Trustee, prior to the occurrence of an Event of Default with respect to the Securities and after the cure or waiver of all Events
of Default which may have occurred, undertakes to perform such duties and only such duties as are specifically set forth in this Indenture. If an Event of Default has occurred and is continuing, the Trustee shall exercise such of the rights and
powers vested in it by this Indenture, and use the same degree of care and skill in its exercise, as a prudent person would exercise or use under the circumstances in the conduct of such person’s own affairs. 

(b) Except during the continuance of an Event of Default: 

(i) the duties of the Trustee shall be determined solely by the express provisions of this Indenture or the Trust
Indenture Act once this Indenture is qualified under the Trust Indenture Act and the Trustee need perform only those duties that are specifically set forth in this Indenture or the Trust Indenture Act once this Indenture is qualified under the Trust
Indenture Act and no others, and no implied covenants or obligations shall be read into this Indenture against the Trustee; and 
 (ii) in the absence of bad faith on its part, the Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon certificates or opinions
furnished to the Trustee and conforming to the requirements of this Indenture. However, in the case of any such certificates or opinions which by any provision hereof are specifically required to be furnished to the Trustee, the Trustee shall
examine the certificates and opinions to determine whether or not they conform to the requirements of this Indenture, provided, however, that the Trustee need not confirm or investigate the accuracy of any mathematical calculations or other facts
stated therein. 
 (c) The Trustee may not be relieved from liabilities for its own negligent action, its own negligent failure
to act, or its own willful misconduct, except that: 
 (i) this paragraph does not limit the effect of paragraph
(b) of this Section 7.01; 
 (ii) the Trustee shall not be liable for any error of judgment made
in good faith by a Responsible Officer, unless it is proved that the Trustee was negligent in ascertaining the pertinent facts; and 
 (iii) the Trustee shall not be liable with respect to any action it takes or omits to take in good faith in accordance with a direction received by it pursuant to Section 6.02, 6.04 or
6.05 hereof. 
 (d) Whether or not therein expressly so provided, every provision of this Indenture that in any way
relates to the Trustee is subject to paragraphs (a), (b) and (c) of this Section 7.01. 
 (e) The Trustee
shall be under no obligation to exercise any of its rights or powers under this Indenture at the request or direction of any of the Holders of the Notes unless the Holders have offered to the Trustee reasonable indemnity or security reasonably
satisfactory to it against any loss, liability or expense. 

  
 -88-

 (f) The Trustee shall not be liable for interest on any money received by it except as the
Trustee may agree in writing with the Issuers. Money held in trust by the Trustee need not be segregated from other funds except to the extent required by law. 
 SECTION 7.02 Rights of Trustee. 
 (a) The Trustee may conclusively rely upon
any document believed by it to be genuine and to have been signed or presented by the proper Person. The Trustee need not investigate any fact or matter stated in the document, but the Trustee, in its discretion, may make such further inquiry or
investigation into such facts or matters as it may see fit, and, if the Trustee shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records and premises of the Issuers and the Restricted
Subsidiaries, personally or by agent or attorney at the sole cost of the Issuers and shall incur no liability or additional liability of any kind by reason of such inquiry or investigation. 

(b) Simultaneously with the execution of this Indenture and before the Trustee acts or refrains from acting hereunder, it may require an
Officers’ Certificate of CDW or an Opinion of Counsel or both. The Trustee shall not be liable for any action it takes or omits to take in good faith in reliance on such Officers’ Certificate or Opinion of Counsel. The Trustee may consult
with counsel of its selection and the written advice of such counsel or any Opinion of Counsel shall be full and complete authorization and protection from liability in respect of any action taken, suffered or omitted by it hereunder in good faith
and in reliance thereon. 
 (c) The Trustee may act through its attorneys and agents and shall not be responsible for the
misconduct or negligence of any agent or attorney appointed with due care. 
 (d) The Trustee shall not be liable for any action
it takes or omits to take in good faith that it believes to be authorized or within the rights or powers conferred upon it by this Indenture. 
 (e) Unless otherwise specifically provided in this Indenture, any demand, request, direction or notice from CDW shall be sufficient if signed by an Officer of CDW. 

(f) None of the provisions of this Indenture shall require the Trustee to expend or risk its own funds or otherwise to incur any
liability, financial or otherwise, in the performance of any of its duties hereunder, or in the exercise of any of its rights or powers if it shall have reasonable grounds for believing that repayment of such funds or indemnity satisfactory to it
against such risk or liability is not assured to it. 
 (g) The Trustee shall not be deemed to have notice of any Default or
Event of Default unless a Responsible Officer of the Trustee has actual knowledge thereof or unless written notice of any event which is in fact such a Default is received by the Trustee at the Corporate Trust Office of the Trustee, and such notice
references the Notes and this Indenture. 
 (h) In no event shall the Trustee be responsible or liable for special, indirect, or
consequential loss or damage of any kind whatsoever (including, but not limited to, loss of profit) irrespective of whether the Trustee has been advised of the likelihood of such loss or damage and regardless of the form of action. 

(i) The rights, privileges, protections, immunities and benefits given to the Trustee, including, without limitation, its right to be
indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, and each agent, custodian and other Person employed to act hereunder. 

  
 -89-

 (j) The Trustee may request that CDW deliver an Officers’ Certificate setting forth the
names of individuals and/or titles of officers authorized at such time to take specified actions pursuant to this Indenture, which Officers’ Certificate may be signed by any person authorized to sign an Officers’ Certificate, including any
person specified as so authorized in any such certificate previously delivered and not superseded. 
 (k) The Trustee shall not
be required to give any bond or surety in respect of the execution of the trusts and powers under this Indenture. 
 (l) The
Trustee shall not be responsible or liable for any failure or delay in the performance of its obligations under this Indenture arising out of or caused, directly or indirectly, by circumstances beyond its reasonable control, including without
limitation, acts of God; earthquakes; fire; flood; terrorism; wars and other military disturbances; sabotage; epidemics; riots; interruptions; loss or malfunction of utilities, computer (hardware or software) or communication services; accidents;
labor disputes; acts of civil or military authorities and governmental action. 
 (m) No provision of this Indenture shall
require the Trustee to expend or risk its own funds or otherwise incur any potential or actual liability or expense (financial or otherwise) in the performance of any of its duties hereunder or in the exercise of any of its rights or powers, if it
shall have reasonable grounds to believe that repayment of such funds or adequate indemnity against such risk, liability or expense is not reasonably assured to it. 
 SECTION 7.03 Individual Rights of Trustee. The Trustee in its individual or any other capacity may become the owner or pledgee of Notes and may otherwise deal with the Issuers or any Affiliate of
the Issuers with the same rights it would have if it were not Trustee. However, in the event that the Trustee acquires any conflicting interest it must eliminate such conflict within 90 days or resign. Any Agent may do the same with like rights and
duties. The Trustee is also subject to Sections 7.10 and 7.11 hereof. 
 SECTION 7.04 Trustee’s
Disclaimer. The Trustee shall not be responsible for and makes no representation as to the validity or adequacy of this Indenture or the Notes, it shall not be accountable for the Issuers’ use of the proceeds from the Notes or any money
paid to the Issuers or upon the Issuers’ direction under any provision of this Indenture, it shall not be responsible for the use or application of any money received by any Paying Agent other than the Trustee, and it shall not be responsible
for any statement or recital herein or any statement in the Notes or any other document in connection with the sale of the Notes or pursuant to this Indenture other than its certificate of authentication. 

SECTION 7.05 Notice of Defaults. If a Default or Event of Default occurs and is continuing and if it is known to the Trustee, the
Trustee shall mail to Holders of Notes a notice of the Default or Event of Default within 90 days after it occurs. 
 SECTION
7.06 Reports by Trustee to Holders of the Notes. Within 60 days after each June 15, beginning with the June 15 following the date Notes are first issued hereunder, and for so long as Notes remain outstanding, the Trustee shall mail
to the Holders of the Notes a brief report dated as of such reporting date that complies with Trust Indenture Act Section 313(a) (but if no event described in Trust Indenture Act Section 313(a) has occurred within the twelve months
preceding the reporting date, no report need be transmitted). The Trustee also shall comply with Trust Indenture Act Section 313(b). The Trustee shall also transmit by mail all reports as required by Trust Indenture Act Section 313(c).

  
 -90-

 A copy of each report at the time of its mailing to the Holders of Notes shall be mailed to
the Issuers and filed with the Commission, if required by applicable law, and each stock exchange on which the Notes are listed in accordance with Trust Indenture Act Section 313(d). The Issuers shall promptly notify the Trustee when the Notes
are listed on any stock exchange or delisted therefrom. 
 SECTION 7.07 Compensation and Indemnity. The Issuers shall pay
to the Trustee from time to time such compensation for its acceptance of this Indenture and services hereunder as the parties shall agree in writing from time to time. The Trustee’s compensation shall not be limited by any law on compensation
of a trustee of an express trust. The Issuers shall reimburse the Trustee promptly upon request for all reasonable disbursements, advances and expenses incurred or made by it in addition to the compensation for its services. Such expenses shall
include the reasonable compensation, disbursements and expenses of the Trustee’s agents and counsel. 
 The Issuers and the
Guarantors, jointly and severally, shall indemnify the Trustee and its officers, directors, employees, agents and any predecessor trustee and its officers, directors, employees and agents for, and hold the Trustee harmless against, any and all loss,
damage, claims, liability or expense (including attorneys’ fees) incurred by it in connection with the acceptance or administration of this trust and the performance of its duties hereunder (including the costs and expenses of enforcing this
Indenture against the Issuers or any of the Guarantors (including this Section 7.07) or defending itself against any claim whether asserted by any Holder, the Issuers or any Guarantor, or liability in connection with the acceptance,
exercise or performance of any of its powers or duties hereunder). The Trustee shall notify the Issuers promptly of any claim for which it may seek indemnity. Failure by the Trustee to so notify the Issuers shall not relieve the Issuers of their
obligations hereunder. The Issuers shall defend the claim and the Trustee may have separate counsel and the Issuers shall pay the fees and expenses of such counsel. The Issuers need not reimburse any expense or indemnify against any loss, liability
or expense incurred by the Trustee through the Trustee’s own willful misconduct, negligence or bad faith. 
 The
obligations of the Issuers under this Section 7.07 shall survive the satisfaction and discharge of this Indenture or the earlier resignation or removal of the Trustee. 

Notwithstanding the provisions of Section 4.12 hereof, to secure the payment obligations of the Issuers and the Guarantors in
this Section 7.07, the Trustee shall have a Lien prior to the Notes on all money or property held or collected by the Trustee, except that held in trust to pay principal and interest on particular Notes. Such Lien shall survive the
satisfaction and discharge of this Indenture. 
 When the Trustee incurs expenses or renders services after an Event of Default
specified in Section 6.01(7) hereof occurs, the expenses and the compensation for the services (including the fees and expenses of its agents and counsel) are intended to constitute expenses of administration under any Bankruptcy Law.

 The Trustee shall comply with the provisions of Trust Indenture Act Section 313(b)(2) to the extent applicable.

 SECTION 7.08 Replacement of Trustee. A resignation or removal of the Trustee and appointment of a successor Trustee
shall become effective only upon the successor Trustee’s acceptance of appointment as provided in this Section 7.08. The Trustee may resign in writing at any time and be discharged from the trust hereby created by so notifying the
Issuers. The Holders of a majority in principal amount of the then outstanding Notes may remove the Trustee by so notifying the Trustee and the Issuers in writing. The Issuers may remove the Trustee if: 

(A) the Trustee fails to comply with Section 7.10 hereof or Section 310 of the Trust Indenture Act;

  
 -91-

 (B) the Trustee is adjudged a bankrupt or an insolvent or an order for
relief is entered with respect to the Trustee under any Bankruptcy Law; 
 (C) a custodian or public officer
takes charge of the Trustee or its property; or 
 (D) the Trustee becomes incapable of acting. 

If the Trustee resigns or is removed or if a vacancy exists in the office of Trustee for any reason, the Issuers shall promptly appoint a
successor Trustee. Within one year after the successor Trustee takes office, the Holders of a majority in principal amount of the then outstanding Notes may appoint a successor Trustee to replace the successor Trustee appointed by the Issuers.

 If a successor Trustee does not take office within 60 days after the retiring Trustee resigns or is removed, the retiring
Trustee (at the Issuers’ expense), the Issuers or the Holders of at least 10% in principal amount of the then outstanding Notes (at the Issuers’ expense) may petition any court of competent jurisdiction for the appointment of a successor
Trustee. 
 If the Trustee, after written request by any Holder who has been a Holder for at least six months, fails to comply
with Section 7.10 hereof, such Holder (at the Issuers’ expense) may petition any court of competent jurisdiction for the removal of the Trustee and the appointment of a successor Trustee. 

A successor Trustee shall deliver a written acceptance of its appointment to the retiring Trustee and to the Issuers. Thereupon, the
resignation or removal of the retiring Trustee shall become effective, and the successor Trustee shall have all the rights, powers and duties of the Trustee under this Indenture. The successor Trustee shall mail a notice of its succession to
Holders. The retiring Trustee shall promptly transfer all property held by it as Trustee to the successor Trustee; provided all sums owing to the Trustee hereunder have been paid and subject to the Lien provided for in
Section 7.07 hereof. Notwithstanding replacement of the Trustee pursuant to this Section 7.08, the Issuers’ and the Guarantors’ obligations under Section 7.07 hereof shall continue for the benefit of the
retiring Trustee. 
 SECTION 7.09 Successor Trustee by Merger, Etc. If the Trustee consolidates, merges or converts into,
or transfers all or substantially all of its corporate trust business to, another corporation, the successor corporation without any further act shall be the successor Trustee. 

SECTION 7.10 Eligibility; Disqualification. There shall at all times be a Trustee hereunder that is a corporation organized and
doing business under the laws of the United States of America or of any state thereof that is authorized under such laws to exercise corporate trustee power, that is subject to supervision or examination by federal or state authorities and that has,
together with its parent, a combined capital and surplus of at least $50,000,000 as set forth in its most recent published annual report of condition. 
 This Indenture shall always have a Trustee who satisfies the requirements of Trust Indenture Act Sections 310(a)(1), (2) and (5). The Trustee is subject to Trust Indenture Act Section 310(b).

 SECTION 7.11 Preferential Collection of Claims Against Issuers. The Trustee is subject to Trust Indenture Act
Section 311(a), excluding any creditor relationship listed in Trust Indenture Act Section 311(b). A Trustee who has resigned or been removed shall be subject to Trust Indenture Act Section 311(a) to the extent indicated therein.

  
 -92-

 ARTICLE VIII 
 LEGAL DEFEASANCE AND COVENANT DEFEASANCE 
 SECTION 8.01 Option to Effect
Legal Defeasance or Covenant Defeasance. The Issuers may, at the option of its Board of Directors and evidenced by a Board Resolution set forth in an Officers’ Certificate, at any time, elect to have either Section 8.02 or
8.03 hereof applied to all outstanding Notes upon compliance with the conditions set forth below in this Article VIII. 
 SECTION 8.02 Legal Defeasance and Discharge. Upon the Issuers’ exercise under Section 8.01 hereof of the option applicable to this Section 8.02, the Issuers and the
Guarantors shall, subject to the satisfaction of the conditions set forth in Section 8.04 hereof, be deemed to have been discharged from their obligations with respect to all outstanding Notes and Guarantees on the date the conditions
set forth below are satisfied (“Legal Defeasance”). For this purpose, Legal Defeasance means that the Issuers shall be deemed to have paid and discharged the entire Indebtedness represented by the outstanding Notes, which shall
thereafter be deemed to be “outstanding” only for the purposes of Section 8.05 hereof and the other Sections of this Indenture referred to in (a) and (b) below, and to have satisfied all their other obligations under
such Notes and this Indenture including that of the Guarantors (and the Trustee, on demand of and at the expense of the Issuers, shall execute proper instruments acknowledging the same), except for the following provisions which shall survive until
otherwise terminated or discharged hereunder: 
 (A) the rights of Holders of Notes to receive payments in
respect of the principal of, premium and Additional Interest, if any, and interest on the Notes when such payments are due solely out of the trust created pursuant to this Indenture referred to in Section 8.04 hereof; 

(B) the Issuers’ obligations with respect to Notes concerning issuing temporary Notes, registration of such Notes,
mutilated, destroyed, lost or stolen Notes and the maintenance of an office or agency for payment and money for security payments held in trust; 
 (C) the rights, powers, trusts, duties and immunities of the Trustee, and the Issuers’ obligations in connection therewith; and 

(D) this Section 8.02. 
 Subject to compliance with this Article VIII, the Issuers may exercise their option under this Section 8.02 notwithstanding the prior exercise of their option under
Section 8.03 hereof. 
 SECTION 8.03 Covenant Defeasance. Upon the Issuers’ exercise under
Section 8.01 hereof of the option applicable to this Section 8.03, the Issuers and the Guarantors shall, subject to the satisfaction of the conditions set forth in Section 8.04 hereof, be released from their
obligations under the covenants contained in Sections 4.03, 4.04, 4.05, 4.07, 4.08, 4.09, 4.10, 4.11, 4.12, 4.14, 4.15, 4.16, 4.17, 4.19 and
5.01 hereof and the operation of clauses (3), (4), (5) and (8) of Section 6.01 hereof with respect to the outstanding Notes on and after the date the conditions set forth in Section 8.04 hereof are satisfied
(“Covenant Defeasance”), and the Notes shall thereafter be deemed not “outstanding” for the purposes of any direction, waiver, consent or declaration or act of Holders (and the consequences of any thereof) in connection
with such covenants, but shall continue to be deemed “outstanding” for all other purposes hereunder (it being understood that such Notes shall not be deemed outstanding for accounting purposes);

  
 -93-

 
provided, however, that no covenant defeasance pursuant to this Section 8.03 shall release the Issuers from their obligations under the Trust Indenture Act, including,
without limitation, their obligations under Section 314 of the Trust Indenture Act. For this purpose, Covenant Defeasance means that, with respect to the outstanding Notes, the Issuers may omit to comply with and shall have no liability in
respect of any term, condition or limitation set forth in any such covenant, whether directly or indirectly, by reason of any reference elsewhere herein to any such covenant or by reason of any reference in any such covenant to any other provision
herein or in any other document and such omission to comply shall not constitute a Default or an Event of Default under Section 6.01 hereof, but, except as specified above, the remainder of this Indenture and such Notes shall be
unaffected thereby. In addition, upon the Issuers’ exercise under Section 8.01 hereof of the option applicable to this Section 8.03 hereof, subject to the satisfaction of the conditions set forth in
Section 8.04 hereof, Sections 6.01(3) (solely with respect to the covenants that are released upon a Covenant Defeasance), 6.01(4), 6.01(5), 6.01(6) (solely with respect to a Significant Subsidiary of the
Issuers but not with respect to the Issuers) and 6.01(7) hereof shall not constitute Events of Default. 

Notwithstanding any discharge or release of any obligations pursuant to Section 8.02 or 8.03, the Issuers’
obligations in Sections 2.05, 2.06, 2.07, 2.08, 7.07, 8.06 and 8.07 shall survive until the Notes are no longer outstanding pursuant to the last paragraph of Section 2.08. After the
Notes are no longer outstanding, the Issuers’ obligations in Sections 7.07, 8.06 and 8.07 shall survive. 
 SECTION 8.04 Conditions to Legal or Covenant Defeasance. The following shall be the conditions to the application of either Section 8.02 or 8.03 hereof to the outstanding Notes:

 In order to exercise either Legal Defeasance or Covenant Defeasance with respect to the Notes: 

(1) the Issuers must irrevocably deposit with the Trustee, in trust, for the benefit of the Holders of the Notes issued
hereunder, cash in U.S. dollars, non-callable U.S. Government Securities, or a combination of cash in U.S. dollars and non-callable U.S. Government Securities, in such amounts as will be sufficient, in the opinion of a nationally recognized
investment bank, appraisal firm or firm of independent public accountants, to pay the principal of, premium and Additional Interest, if any, and interest due on the Notes on the Stated Maturity date or on the Redemption Date, as the case may be, of
such principal, premium, if any, or interest on such Notes and the Issuers must specify whether such Notes are being defeased to maturity or to a particular Redemption Date. 

(2) in the case of Legal Defeasance, the Issuers shall have delivered to the Trustee an Opinion of Counsel in the United
States reasonably acceptable to the Trustee confirming that, subject to customary assumptions and exclusions, 

(A) the Issuers have received from, or there has been published by, the United States Internal Revenue Service a ruling,
or 
 (B) since the issuance of the Notes, there has been a change in the applicable U.S. federal income tax law,

 in either case to the effect that, and based thereon such Opinion of Counsel in the United States shall confirm that, subject
to customary assumptions and exclusions, the Holders of the Notes will not recognize income, gain or loss for U.S. federal income tax purposes, as applicable, as a result of such Legal Defeasance and will be subject to U.S. federal income tax on the
same amounts, in the same manner and at the same times as would have been the case if such Legal Defeasance had not occurred; 

  
 -94-

 (3) in the case of Covenant Defeasance, the Issuers shall have delivered to
the Trustee an Opinion of Counsel in the United States reasonably acceptable to the Trustee confirming that, subject to customary assumptions and exclusions, the Holders of the Notes will not recognize income, gain or loss for U.S. federal income
tax purposes as a result of such Covenant Defeasance and will be subject to U.S. federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Covenant Defeasance had not occurred; 

(4) no Default or Event of Default shall have occurred and be continuing on the date of such deposit (other than a Default
or Event of Default resulting from the borrowing of funds to be applied to make such deposit and the grant of any Lien securing such borrowings); 
 (5) such Legal Defeasance or Covenant Defeasance shall not result in a breach or violation of, or constitute a default under any other material agreement or instrument (other than this Indenture) to
which, the Issuers or any Guarantor is a party or by which CDW or any Guarantor is bound; 
 (6) the Issuers
shall have delivered to the Trustee an Officers’ Certificate stating that the deposit was not made by the Issuers with the intent of preferring the Holders of the Notes over the other creditors of the Issuers or any Guarantor or defeating,
hindering, delaying or defrauding creditors of the Issuers or any Guarantor or others; and 
 (7) the Issuers
shall have delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel in the United States (which Opinion of Counsel may be subject to customary assumptions and exclusions) each stating that all conditions precedent provided
for or relating to the Legal Defeasance or the Covenant Defeasance, as the case may be, have been complied with. 
 SECTION 8.05
Deposited Money and Government Securities to Be Held in Trust; Other Miscellaneous Provisions. Subject to Section 8.06 hereof, all money and U.S. Government Securities (including the proceeds thereof) deposited with the Trustee
(or other qualifying trustee, collectively for purposes of this Section 8.05, the “Trustee”) pursuant to Section 8.04 hereof in respect of the outstanding Notes shall be held in trust and applied by the
Trustee, in accordance with the provisions of such Notes and this Indenture, to the payment, either directly or through any Paying Agent (including the Issuers or a Guarantor acting as Paying Agent) as the Trustee may determine, to the Holders of
such Notes of all sums due and to become due thereon in respect of principal, premium, if any, and interest and Additional Interest, if any, but such money need not be segregated from other funds except to the extent required by law. 

The Issuers shall pay and indemnify the Trustee against any tax, fee or other charge imposed on or assessed against the cash or U.S.
Government Securities deposited pursuant to Section 8.04 hereof or the principal and interest received in respect thereof other than any such tax, fee or other charge which by law is for the account of the Holders of the outstanding
Notes. 
 Anything in this Article VIII to the contrary notwithstanding, the Trustee shall deliver or pay to the Issuers
from time to time upon the written request of the Issuers any money or U.S. Government Securities held by it as provided in Section 8.04 hereof which, in the opinion of a nationally recognized firm of independent public accountants
expressed in a written certification thereof delivered to the Trustee (which may be the opinion delivered under Section 8.04(a) hereof), are in excess of the amount thereof that would then be required to be deposited to effect an
equivalent Legal Defeasance or Covenant Defeasance. 

  
 -95-

 SECTION 8.06 Repayment to Issuers. Subject to any applicable abandoned property law,
any money deposited with the Trustee or any Paying Agent, or then held by the Issuers, in trust for the payment of the principal of, premium, if any, or interest or Additional Interest, if any, on any Note and remaining unclaimed for two years after
such principal, and premium, if any, or interest or Additional Interest, if any, has become due and payable shall be paid to the Issuers on their written request or (if then held by the Issuers) shall be discharged from such trust; and the Holder of
such Note shall thereafter look only to the Issuers for payment thereof, and all liability of the Trustee or such Paying Agent with respect to such trust money, and all liability of the Issuers as trustee thereof, shall thereupon cease;
provided, that the Trustee or such Paying Agent, before being required to make any such repayment, may at the expense of the Issuers cause to be published once, in The New York Times and The Wall Street Journal (national
edition), notice that such money remains unclaimed and that, after a date specified therein, which shall not be less than 30 days from the date of such notification or publication, any unclaimed balance of such money then remaining shall be
repaid to the Issuers. 
 SECTION 8.07 Reinstatement. If the Trustee or Paying Agent is unable to apply any U.S. dollars
or U.S. Government Securities in accordance with Section 8.02 or 8.03 hereof, as the case may be, by reason of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such
application, then the Issuers’ obligations under this Indenture and the Notes shall be revived and reinstated as though no deposit had occurred pursuant to Section 8.02 or 8.03 hereof until such time as the Trustee or Paying
Agent is permitted to apply all such money in accordance with Section 8.02 or 8.03 hereof, as the case may be; provided that, if the Issuers make any payment of principal of, premium, if any, or interest or Additional
interest, if any, on any Note following the reinstatement of its obligations, the Issuers shall be subrogated to the rights of the Holders of such Notes to receive such payment from the money held by the Trustee or Paying Agent. 

ARTICLE IX 

AMENDMENT, SUPPLEMENT AND WAIVER 
 SECTION 9.01 Without Consent of Holders of Notes. Notwithstanding Section 9.02 hereof, CDW, the Guarantors and the Trustee may amend or supplement this Indenture, any Guarantee and the
Notes, without the consent of any Holder: 
 (1) to cure any ambiguity, mistake, defect or inconsistency;

 (2) to provide for uncertificated Notes in addition to or in place of certificated Notes; 

(3) to provide for the assumption by a Successor Company or a successor company of a Guarantor, as applicable, of
CDW’s or such Guarantor’s obligations under this Indenture, the Notes or any Guarantee; 
 (4) to make
any change that would provide any additional rights or benefits to the Holders of Notes or that does not adversely affect the legal rights under this Indenture of any such Holder; provided that such changes pursuant to this clause shall not
adversely affect the interests of the Holders in any material respect, as determined in good faith by the Board of Directors of CDW; 

  
 -96-

 (5) to comply with requirements of the Commission in order to effect or
maintain the qualification of this Indenture under the Trust Indenture Act; 
 (6) to add a Guarantee of the
Notes; 
 (7) to release a Guarantor upon its sale or designation as an Unrestricted Subsidiary or other
permitted release from its Guarantee; provided that such sale, designation or release is in accordance with the applicable provisions of this Indenture; 
 (8) to mortgage, pledge, hypothecate or grant any other Lien in favor of the Trustee for the benefit of the Holders of the Notes, as security for the payment and performance of all or any portion of the
Obligations, in any property or assets, or otherwise to secure the Notes; 
 (9) to conform the text of this
Indenture, Guarantees or the Notes to any provision of the “Description of Notes” to the extent that such provision in the “Description of Notes” was intended to be a verbatim recitation of a provision of this Indenture,
Guarantee or Notes; or 
 (10) to provide for the Assumption. 

Upon the request of CDW accompanied by a Board Resolution of CDW authorizing the execution of any such amended or supplemental indenture,
and upon receipt by the Trustee of the documents described in Section 7.02 hereof, the Trustee shall join with CDW and the Guarantors in the execution of any amended or supplemental indenture authorized or permitted by the terms of this
Indenture and to make any further appropriate agreements and stipulations that may be therein contained, but the Trustee shall have the right, but not be obligated to, enter into such amended or supplemental indenture that affects its own rights,
duties or immunities under this Indenture or otherwise. Notwithstanding the foregoing, neither an Opinion of Counsel nor an Officers’ Certificate shall be required in connection with the addition of a Guarantor under this Indenture (other than
as required by Section 4.15 hereof) upon execution and delivery by such Guarantor and the Trustee of a supplemental indenture to this Indenture, the form of which is attached as Exhibit D hereto. 

SECTION 9.02 With Consent of Holders of Notes. Except as provided below in this Section 9.02, CDW, the Guarantors and
the Trustee may amend or supplement this Indenture, the Notes and the Guarantees with the consent of the Required Holders (including consents obtained in connection with a tender offer or Registered Exchange Offer for, or purchase of, the Notes),
and, subject to Sections 6.04 and 6.07 hereof, any existing Default or Event of Default (other than a Default or Event of Default in the payment of the principal of, premium, if any, or interest or Additional Interest, if any, on the
Notes) or compliance with any provision of this Indenture, the Guarantees or the Notes may be waived with the consent of the Required Holders (including consents obtained in connection with a tender offer or Registered Exchange Offer for, or
purchase of, the Notes). 
 Upon the request of CDW accompanied by a Board Resolution of CDW authorizing the execution of any
such amended or supplemental indenture, and upon the filing with the Trustee of evidence satisfactory to the Trustee of the consent of the Holders of Notes as aforesaid, and upon receipt by the Trustee of the documents described in
Section 7.02 hereof, the Trustee shall join with CDW in the execution of such amended or supplemental indenture unless such amended or supplemental indenture directly affects the Trustee’s own rights, duties or immunities under this
Indenture or otherwise, in which case the Trustee may in its discretion, but shall not be obligated to, enter into such amended or supplemental indenture. 

  
 -97-

 It shall not be necessary for the consent of the Required Holders of the Notes under this
Section 9.02 to approve the particular form of any proposed amendment or waiver, but it shall be sufficient if such consent approves the substance thereof. 
 After an amendment, supplement or waiver under this Section 9.02 becomes effective, CDW shall mail to the Holders of Notes affected thereby a notice briefly describing the amendment,
supplement or waiver. Any failure of CDW to mail such notice, or any defect therein, shall not, however, in any way impair or affect the validity of any such amended or supplemental indenture or waiver. 

Notwithstanding the foregoing, without the consent of each affected Holder of Notes, an amendment or waiver under this
Section 9.02 may not (with respect to any Notes held by a non-consenting Holder): 
 (1) reduce the
principal amount of such Notes whose Holders must consent to an amendment, supplement or waiver; or change the definition of “Required Holders”; 
 (2) reduce the principal of or change the Maturity Date of any such Note or alter the provisions with respect to the redemption of such Note (other than the provisions of Sections 3.09, 4.10
and 4.14 hereof, except as set forth in clause (10) below); 
 (3) reduce the rate of or change the
time for payment of interest on any Note; 
 (4) waive a Default or Event of Default in the payment of principal
of or premium, if any, or interest or Additional Interest, if any, on the Notes, except a rescission of acceleration of the Notes by the Required Holders and a waiver of the payment default that resulted from such acceleration, or in respect of a
covenant or provision contained in this Indenture or any Guarantee which cannot be amended or modified without the consent of all Holders; 
 (5) make any Note payable in money other than that stated therein; 

(6) make any change in the provisions of this Indenture relating to waivers of past Defaults or the rights of Holders to
receive payments of principal of or premium, if any, or interest or Additional Interest, if any, on the Notes or impact the right of any Holder of Notes to institute suit for the enforcement of any payment on or with respect to such Holder’s
Notes; 
 (7) make any change in the amendment and waiver provisions of Section 9.01 hereof or this
Section 9.02; 
 (8) waive a redemption payment with respect to any Note (other than a payment
required by Sections 3.09, 4.10 and 4.14 hereof, except as set forth in clause (10) below; 
 (9) make any change to or modify the ranking of the Notes that would adversely affect the Holders of the Notes; 
 (10) amend, change or modify in any material respect the obligation of CDW to make and consummate a Change of Control Offer in respect of a Change of Control that has occurred or make and consummate an
Asset Sale Offer in respect of an Asset Sale that has been consummated after a requirement to make an Asset Sale Offer has arisen; or 
 (11) modify the Guarantees in any manner adverse to the Holders of the Notes. 

  
 -98-

 In addition, without the consent of at least 75% in aggregate principal amount of Notes
then outstanding, an amendment, supplement or waiver may not make any change to, or extend the time for performance under, the escrow release provisions described under Sections 4.21 and 4.22 hereof or the Special Mandatory Redemption
provisions described under Section 3.10 hereof. 
 SECTION 9.03 Revocation and Effect of Consents. Until an
amendment, supplement or waiver becomes effective, a consent to it by a Holder of a Note is a continuing consent by the Holder of a Note and every subsequent Holder of a Note or portion of a Note that evidences the same debt as the consenting
Holder’s Note, even if notation of the consent is not made on any Note. However, any such Holder of a Note or subsequent Holder of a Note may revoke the consent as to its Note if the Trustee receives written notice of revocation before the date
the waiver, supplement or amendment becomes effective. An amendment, supplement or waiver becomes effective in accordance with its terms and thereafter binds every Holder. 
 CDW may, but shall not be obligated to, fix a record date for the purpose of determining the Holders entitled to consent to any amendment, supplement, or waiver. If a record date is fixed, then,
notwithstanding the preceding paragraph, those Persons who were Holders at such record date (or their duly designated proxies), and only such Persons, shall be entitled to consent to such amendment, supplement, or waiver or to revoke any consent
previously given, whether or not such Persons continue to be Holders after such record date. No such consent shall be valid or effective for more than 120 days after such record date unless the consent of the requisite number of Holders has been
obtained. 
 SECTION 9.04 Notation on or Exchange of Notes. The Trustee may place an appropriate notation about an
amendment, supplement or waiver, the text of which shall be provided by CDW, on any Note thereafter authenticated. The Issuers in exchange for all Notes may issue and the Trustee shall, upon receipt of an Authentication Order, authenticate new Notes
that reflect the amendment, supplement or waiver. 
 Failure to make the appropriate notation or issue a new Note shall not
affect the validity and effect of such amendment, supplement or waiver. 
 SECTION 9.05 Trustee to Sign Amendments, Etc.
The Trustee shall sign any amendment, supplement or waiver authorized pursuant to this Article IX if the amendment or supplement does not adversely affect the rights, duties, liabilities or immunities of the Trustee. The Issuers and the
Guarantors may not sign an amendment, supplement or waiver until their respective Board of Directors approve it. In executing any amendment, supplement or waiver, the Trustee shall be entitled to receive, upon request, and (subject to
Section 7.01 hereof) shall be fully protected in relying upon, in addition to the documents required by Section 12.04 hereof, an Officers’ Certificate and an Opinion of Counsel stating that the execution of such amended
or supplemental indenture is authorized or permitted by this Indenture and constitutes the valid and binding enforceable obligation of the Issuers. Notwithstanding the foregoing, except as required by Section 4.15 hereof, neither an
Opinion of Counsel nor an Officers’ Certificate will be required for the Trustee to execute any amendment or supplement adding a new Guarantor under this Indenture. 

  
 -99-

 ARTICLE X 
 GUARANTEES 
 SECTION 10.01 Guarantee. 

(a) On the Release Date, each of CDW’s direct and indirect Restricted Subsidiaries that are Domestic Subsidiaries on the Release Date
that guarantee the Senior Secured Notes shall, by execution of a supplemental indenture in the form of Exhibit E hereto on the Release Date, become a Guarantor. Each Guarantor hereby fully, unconditionally and irrevocably guarantees, jointly with
the other Guarantors and severally, as a primary obligor and not merely as a surety, to each Holder of a Note authenticated and delivered by the Trustee and to the Trustee and its successors and assigns that: (i) the principal of and applicable
interest and premium and Additional Interest, if any, on the Notes shall be promptly paid in full when due, whether at Stated Maturity, by acceleration, redemption or otherwise, and interest on the overdue principal of and applicable interest and
Additional Interest, if any, on the Notes, if any, if lawful, and all other obligations of the Issuers to the Holders or the Trustee hereunder or thereunder shall be promptly paid in full or performed, all in accordance with the terms hereof and
thereof; and (ii) in case of any extension of time of payment or renewal of any Notes or any of such other obligations, that same shall be promptly paid in full when due or performed in accordance with the terms of the extension or renewal,
whether at Stated Maturity, by acceleration or otherwise (the obligations in clauses (i) and (ii) collectively, the “Guaranteed Obligations”). Each Guarantor further agrees that the Guaranteed Obligations may be extended
or renewed, in whole or in part, without notice or further assent from such Guarantor and that such Guarantor will remain bound upon its guarantee notwithstanding any extension or renewal of any Guaranteed Obligation. 

(b) Each Guarantor waives presentation to, demand of, payment from and protest to the Issuers or any other Guarantor of any of the
Guaranteed Obligations and also waives notice of acceptance of its Guarantee and notice of protest for nonpayment. Each Guarantor waives notice of any default on the Guaranteed Obligations. The obligations of each Guarantor hereunder shall not be
affected by (i) the failure of any Holder of any Note or the Trustee to assert any claim or demand or to enforce any right or remedy against the Issuers or any other Person (including any Guarantor) under this Indenture, the Notes or any other
agreement or otherwise; (ii) any extension or renewal of any thereof; (iii) any rescission, waiver, amendment or modification of any of the terms or provisions of this Indenture, the Notes or any other agreement; (iv) the failure of
any Holder of any Note or the Trustee to exercise any right or remedy against any other Guarantor of the Guaranteed Obligations; or (v) except as set forth in Section 10.08 hereof, any change in the ownership of such Guarantor.

 (c) Each Guarantor further agrees that its Guarantee herein constitutes a guarantee of payment, performance and compliance
when due (and not a guarantee of collection) and waives any right to require that any resort be had by any Holder of any Note or the Trustee to any balance of any deposit account or credit on the books of the Holder of any Note or the Trustee in
favor of the Issuers or any other person. 
 (d) Except as expressly set forth in Sections 10.02 and 10.06
hereof, the obligations of each Guarantor hereunder shall not be subject to any reduction, limitation, impairment or termination for any reason, including any claim of waiver, release, surrender, alteration or compromise, and shall not be subject to
any defense or setoff, counterclaim, recoupment or termination whatsoever or by reason of the invalidity, illegality or unenforceability of the Guaranteed Obligations or otherwise. Without limiting the generality of the foregoing, the obligations of
each Guarantor herein shall not be discharged or impaired or otherwise affected by (i) the failure of any Holder of any Note or the Trustee to assert any claim or demand or to enforce any right or remedy under this Indenture, the Notes or any
other agreement, by (ii) any recession, waiver, amendment or modification of, or any release from any of the terms or provisions of, or any release from any of the terms or provisions of, any thereof, including with respect to any other
Guarantor under this Indenture, (iii) any default, failure or delay, willful or otherwise, in the performance of the Guaranteed Obligations, or (iv) any other act or thing or omission or delay to do any other act or thing which may or
might in any manner or to any extent vary the risk of such Guarantor or would otherwise operate as a discharge of such Guarantor as a matter of law or equity. 

  
 -100-

 (e) To the fullest extent permitted by applicable law, each Guarantor waives any defense
based on or arising out of any defense of the Issuers or any other Guarantor or the unenforceability of the Guaranteed Obligations, or any part thereof from any cause, or the cessation from any cause of the liability of the Issuers or any other
Guarantor. The Trustee and the Holder of any Note may, at their election, compromise or adjust any part of the Guaranteed Obligations, make any other accommodation with the Issuers or any other Guarantor or exercise any other right or remedy
available to them against the Issuers or any other Guarantor, without affecting or impairing in any way the liability of any Guarantor hereunder except to the extent the Guaranteed Obligations have been fully and indefeasibly paid in full in cash.
To the fullest extent permitted by applicable law, each Guarantor waives any defense arising out of any such election even though such election operates, pursuant to applicable law, to impair or to extinguish any right of reimbursement or
subrogation or other right or remedy of such Guarantor against the Issuers or any other Guarantor, as the case may be. 
 (f)
Each Guarantor, and by its acceptance of this Indenture, the Holder of any Note and the Trustee, hereby confirms that it is the intention of all such Persons that this Indenture, the Notes and the Guaranteed Obligations of each Guarantor hereunder
not constitute a fraudulent transfer or conveyance for purposes of Bankruptcy Law, the Uniform Fraudulent Conveyance Act, the Uniform Fraudulent Transfer Act or any similar foreign, federal or state law to the extent applicable to this Guarantee and
the Guaranteed Obligations of each Guarantor hereunder. To effectuate the foregoing intention, the Holders of Notes, the Trustee and the Guarantors hereby irrevocably agree that the Guaranteed Obligations of each Guarantor under this Guarantee at
any time shall be limited to the maximum amount as will result in the Guaranteed Obligations of such Guarantor under this Guarantee not constituting a fraudulent transfer or conveyance. 

(g) Each Guarantor further agrees that its Guarantee herein shall continue to be effective or be reinstated, as the case may be, if at
any time payment, or any part thereof, of principal of or interest on any Guaranteed Obligation is rescinded or must otherwise be restored by any Holder of any Note or the Trustee upon the bankruptcy or reorganization of an Issuer, any Guarantor or
otherwise. 
 (h) In furtherance of the foregoing clauses (a) through (g) and not in limitation of any other right
which any Holder of any Note or the Trustee has at law or in equity against any Guarantor by virtue hereof, upon the failure of the Issuers or any other Guarantor to pay the principal of or interest on any Guaranteed Obligation when and as the same
shall become due, whether at maturity, by mandatory redemption, optional redemption or otherwise, or to perform or comply with any other Guaranteed Obligation, each Guarantor hereby promises to and shall forthwith pay, or cause to be paid, in cash,
to the Trustee for distribution to the Holders an amount equal to the sum of (i) the unpaid amount of such Guaranteed Obligations, (ii) accrued and unpaid interest on such Guaranteed Obligations (but only to the extent not prohibited by
law) and (iii) all other monetary Guaranteed Obligations of the Issuers to the Holder of any Note or the Trustee. 
 (i)
Each Guarantor agrees that, as between it, on the one hand, and the Holders and the Trustee, on the other hand, (i) the maturity of the Guaranteed Obligations may be accelerated as provided in Article VI for the purposes of such
Guarantor’s Guarantee herein, notwithstanding any stay, injunction or other prohibition preventing such acceleration in respect of the Guaranteed Obligations, and (ii) in the event of any declaration of acceleration of such Guaranteed
Obligations as provided in Article VI, such Guaranteed Obligations (whether or not due and payable) shall forthwith become due and payable by such Guarantor for the purposes of this Section 10.01. The Guarantors shall have
the right to seek contribution from any non-paying Guarantor so long as the exercise of such right does not impair the rights of the Holders under the Guarantees. 

  
 -101-

 (j) Each Guarantor also agrees to pay any and all costs and expenses (including reasonable
attorneys’ fees) incurred by the Trustee or any Holder in enforcing any rights under this Section 10.01. 
 (k)
Each Guarantor assumes all responsibility for being and keeping itself informed of the Issuers’ and each other Guarantor’s financial condition and assets, and of all other circumstances bearing upon the risk of nonpayment of the Guaranteed
Obligations, and the nature, scope and extent of the risks that such Guarantor assumes and incurs hereunder, and agrees that none of the Trustee or the Holders will have any duty to advise such Guarantor of information known to it or any of them
regarding such circumstances or risks. 
 (l) The Guarantee issued by any Guarantor shall be a general unsecured senior
obligation of such Guarantor and shall be pari passu in right of payment with all existing and future Senior Indebtedness of such Guarantor, if any. 
 SECTION 10.02 Limitation on Guarantor Liability. Any term or provision of this Indenture to the contrary notwithstanding, the maximum aggregate amount of the Guaranteed Obligations Guaranteed
hereunder by any Guarantor shall not exceed the maximum amount that can be hereby Guaranteed without rendering this Indenture or the Notes, as they relates to such Guarantor, voidable under applicable law relating to fraudulent conveyance or
fraudulent transfer or similar laws affecting the rights of creditors generally. 
 SECTION 10.03 Execution and Delivery.
To evidence its Guarantee set forth in Section 10.01 hereof, each Guarantor hereby agrees that this Indenture shall be executed on behalf of such Guarantor by an authorized officer of such Guarantor and that a notation of such Guarantee
substantially in the form attached hereto as Exhibit B shall be enclosed on each Note authenticated and delivered by the Trustee. Such notation of Guarantee shall be signed on behalf of such Guarantor by an Officer of such Guarantor (or, if
an Officer is not available, by a board member or director) on behalf of such Guarantor by manual or facsimile signature. 

Each Guarantor hereby agrees that its Guarantee set forth in Section 10.01 hereof shall remain in full force and effect
notwithstanding the absence of the endorsement of any notation of such Guarantee on the Notes. 
 If an Officer whose signature
is on this Indenture no longer holds that office at the time the Trustee authenticates the Note, the Guarantee shall be valid nevertheless. 
 The delivery of any Note by the Trustee, after the authentication thereof hereunder, shall constitute due delivery of the Guarantee set forth in this Indenture on behalf of the Guarantors. 

If required by Section 4.15 hereof, the Issuers shall cause any newly created or acquired Restricted Subsidiary to comply
with the provisions of Section 4.15 hereof and this Article X, to the extent applicable. 
 SECTION 10.04
Subrogation. Each Guarantor shall be subrogated to all rights of Holders of Notes against the Issuers in respect of any amounts paid by any Guarantor pursuant to the provisions of Section 10.01 hereof; provided that, if an
Event of Default has occurred and is continuing, no Guarantor shall be entitled to enforce or receive any payments arising out of, or based upon, such right of subrogation until all amounts then due and payable by the Issuers under this Indenture or
the Notes shall have been paid in full. 

  
 -102-

 SECTION 10.05 Severability. In case any provision of any Guarantee shall be invalid,
illegal or unenforceable, the validity, legality, and enforceability of the remaining provisions shall not in any way be affected or impaired thereby. 
 SECTION 10.06 Guarantors May Consolidate, Etc., on Certain Terms. 
 (a)
Except as otherwise provided in this Section 10.06(a), a Guarantor (other than Parent) may not (1) consolidate with or merge with or into (whether or not such Guarantor is the surviving Person) another Person; or (2) sell,
assign, transfer, convey, lease or otherwise dispose of all or substantially all of its properties or assets; unless: 
 (1) (a) such Guarantor is the surviving corporation; or (b) the Person formed by or surviving any such consolidation or merger (if other than such Guarantor) or to which such sale, assignment,
transfer, conveyance, lease or other disposition has been made is a corporation or limited liability company organized or existing under the laws of the United States, any state of the United States or the District of Columbia or any territory
thereof (such Guarantor or such Person, including the Person to which such sale, assignment, transfer, conveyance, lease or other disposition has been made, as the case may be, being herein called the “Successor Guarantor”);

 (2) the Successor Guarantor (if other than such Guarantor) assumes all the obligations of such Guarantor under
the Guarantee, this Indenture and the Registration Rights Agreement pursuant to agreements reasonably satisfactory to the Trustee; 
 (3) immediately after such transaction, no Default or Event of Default exists; and 
 (4) the Net Proceeds of any such sale or other disposition of a Guarantor are applied in accordance with the provisions of Section 4.10 hereof. 

In case of any such consolidation, merger, sale or conveyance and upon the assumption by the successor Person, by supplemental indenture,
executed and delivered, together with an Opinion of Counsel to the effect that such consolidation, merger, sale or conveyance was made in accordance with the provisions of this Indenture, to the Trustee and satisfactory in form to the Trustee, of
the Guarantee and the due and punctual performance of all of the covenants and conditions of this Indenture and the Registration Rights Agreement to be performed by the Guarantor, such successor Person shall succeed to and be substituted for the
Guarantor with the same effect as if it had been named herein as a Guarantor. All the Guarantees so issued shall in all respects have the same legal rank and benefit under this Indenture as the Guarantees theretofore and thereafter issued in
accordance with the terms of this Indenture as though all such Guarantees had been issued at the date of the execution hereof. 

Upon delivery to the Trustee of an Officers’ Certificate and an Opinion of Counsel to the effect that such sale or other disposition
was made by the Issuers in accordance with the provisions of this Indenture, including without limitation Section 4.10 hereof, the Trustee shall execute any documents reasonably required in order to evidence the release of any Guarantor
from its obligations under its Guarantee. 
 Notwithstanding the foregoing, any Guarantor (A) may consolidate with, merge
into or sell, assign, transfer, convey, lease or otherwise dispose of all or part of its properties and assets to CDW or to another Guarantor or (B) dissolve, liquidate or wind up its affairs if at that time it does not hold any material
assets. 

  
 -103-

 The predecessor company will be released from its obligations under this Indenture and the
Guarantees and the Successor Guarantor will succeed to, and be substituted for, and may exercise every right and power of, each such Guarantor this Indenture and each such Guarantee, but, in the case of a lease of all or substantially all its
assets, the predecessor company will not be released from its obligations under each such Guarantee. 
 (b) Except as otherwise
provided in this Section 10.06(b), Parent will not (1) consolidate or merge with or into another Person (whether or not Parent is the surviving corporation); or (2) sell, assign, transfer, convey, lease or otherwise dispose of
all or substantially all of its properties or assets; unless: 
 (1) (a) Parent is the surviving corporation; or
(b) the Person formed by or surviving any such consolidation or merger (if other than Parent) or to which such sale, assignment, transfer, conveyance, lease or other disposition has been made is a corporation or limited liability company
organized or existing under the laws of the United States, any state of the United States or the District of Columbia or any territory thereof (Parent or such Person, including the Person to which such sale, assignment, transfer, conveyance, lease
or other disposition has been made, as the case may be, being herein called the “Successor Parent Guarantor”); 
 (2) the Successor Parent Guarantor (if other than Parent) assumes all the obligations of the Guarantor under the Guarantee, this Indenture and the Registration Rights Agreement pursuant to agreements
reasonably satisfactory to the Trustee; and 
 (3) immediately after such transaction, no Default or Event of
Default exists. 
 In case of any such consolidation, merger, sale or conveyance and upon the assumption by the successor
Person, by supplemental indenture, executed and delivered to the Trustee and satisfactory in form to the Trustee, of the Parent and the due and punctual performance of all of the covenants and conditions of this Indenture and the Registration Rights
Agreement to be performed by the Parent, such successor Person shall succeed to and be substituted for the Parent with the same effect as if it had been named herein as a Parent. All the Guarantees so issued shall in all respects have the same legal
rank and benefit under this Indenture as the Guarantees theretofore and thereafter issued in accordance with the terms of this Indenture as though all such Guarantees had been issued at the date of the execution hereof. 

Notwithstanding the foregoing, Parent may consolidate with, merge into or sell, assign, transfer, convey, lease or otherwise dispose of
all or part of its properties and assets to CDW or to another Guarantor. 
 The predecessor company will be released from its
obligations under this Indenture and the Guarantees and the Successor Parent Guarantor will succeed to, and be substituted for, and may exercise every right and power of, Parent under this Indenture and any such Guarantee, but, in the case of a
lease of all or substantially all its assets, the predecessor company will not be released from its obligations under any such Guarantee. 
 SECTION 10.07 Benefits Acknowledged. Each Guarantor acknowledges that it will receive direct and indirect benefits from the financing arrangements contemplated by this Indenture and that the
guarantee and waivers made by it pursuant to its Guarantee are knowingly made in contemplation of such benefits. 

  
 -104-

 SECTION 10.08 Release of Guarantees. Each Guarantor will be automatically and
unconditionally released and discharged from its obligations under this Article X (other than any obligation that may have arisen under Section 10.02 hereof) upon: 

(1) (a) any sale, disposition or other transfer (including through merger or consolidation) of (i) the Capital
Stock of such Guarantor (including any sale, disposition or other transfer), after which, in the case of a subsidiary Guarantor, the applicable Guarantor is no longer a Restricted Subsidiary or (ii) all or substantially all the assets of such
Guarantor, in each case made in compliance with the applicable provisions of this Indenture; or 
 (b) the
designation of such Restricted Subsidiary that is a Guarantor as an Unrestricted Subsidiary in compliance with the applicable provisions of this Indenture; or 
 (c) in the case of any Restricted Subsidiary which after the Release Date is required to guarantee the Notes pursuant to Section 4.15 hereof, the release or discharge of the guarantee by such
Restricted Subsidiary of all of the Indebtedness of CDW or any Restricted Subsidiary or the repayment of all of the Indebtedness or Disqualified Stock, in each case, which resulted in the obligation to guarantee the Notes; or 

(d) such Guarantor is also a guarantor or borrower under the Senior Secured Term Loan and, at the time of release of its
Guarantee, (x) has been released from its guarantee of, and all pledges and security, if any, granted in connection with the Senior Secured Term Loan (which may be conditioned on the concurrent release hereunder), (y) is not an obligor
under any Indebtedness (other than Indebtedness permitted to be incurred pursuant to clause (5), (6), (7), (8), (9), (10) or (15) of the definition of “Permitted Debt” and (z) does not guarantee any Indebtedness of CDW or
any Restricted Subsidiaries (other than any guarantee that will be released upon the release of the Guarantee hereunder); or 
 (e) the exercise by CDW of its Legal Defeasance option or Covenant Defeasance option in accordance with Article VIII hereof or the discharge of CDW’s obligations under this Indenture in
accordance with the terms of this Indenture; and 
 (2) such Guarantor delivering to the Trustee an
Officers’ Certificate and an Opinion of Counsel, each stating that all conditions precedent provided for in this Indenture relating to such transaction have been complied with. 

Any Guarantor not released from its obligations under this Guarantee shall remain liable for the full amount of principal of and interest
on the Notes and for the other obligations of any Guarantor under this Indenture as provided in this Article X. 

SECTION 10.09 Contribution. Each Guarantor that makes a payment under its Guarantee shall be entitled upon payment in full of all
Guaranteed Obligations under this Indenture to a contribution from each other Guarantor in an amount equal to such other Guarantor’s pro rata portion of such payment based on the respective net assets of all the Guarantors at the time of such
payment determined in accordance with GAAP. 

  
 -105-

 ARTICLE XI 
 SATISFACTION AND DISCHARGE 
 SECTION 11.01 Satisfaction and
Discharge. This Indenture shall be discharged and shall cease to be of further effect as to the Notes, when: 

(1) either (A) all Notes heretofore authenticated and delivered, except lost, stolen or destroyed Notes which have
been replaced or paid and Notes for whose payment money has heretofore been deposited in trust, have been delivered to the Trustee for cancellation; or 
 (B) all Notes heretofore not delivered to the Trustee for cancellation have become due and payable by reason of the mailing of a notice of redemption or otherwise or will become due and payable by reason
of the mailing of a notice of redemption or otherwise within one year and the Issuers have irrevocably deposited or caused to be deposited with the Trustee as trust funds in trust solely for the benefit of the Holders of the Notes, cash in U.S.
dollars, non-callable U.S. Government Securities, or a combination thereof, in amounts as will be sufficient without consideration of any reinvestment of interest, to pay and discharge the entire Indebtedness on the Notes not delivered to the
Trustee for cancellation for principal, premium and Additional Interest, if any, and accrued interest to the date of maturity or redemption; 
 (2) no Default or Event of Default shall have occurred and be continuing on the date of the deposit or will occur as a result of the deposit (other than a Default resulting from borrowing of funds to be
applied to such deposit and any similar and simultaneous deposit relating to other Indebtedness, and in each case the grant of any Lien securing such borrowing) and the deposit will not result in a breach or violation of, or constitute a default
under, any other material instrument to which the Issuers are a party or by which the Issuers are bound; 
 (3)
the Issuers have paid or caused to be paid all sums payable by them under this Indenture; and 
 (4) the Issuers
have delivered irrevocable instructions to the Trustee to apply the deposited money toward the payment of the Notes at maturity or the Redemption Date, as the case may be. 
 In addition, the Issuers must deliver an Officers’ Certificate and an Opinion of Counsel to the Trustee stating that all conditions precedent to satisfaction and discharge have been satisfied.

 Notwithstanding the satisfaction and discharge of this Indenture, if money shall have been deposited with the Trustee
pursuant to subclause (A) of clause (2) of this Section 11.01, the provisions of Section 11.02 and Section 8.06 hereof shall survive. 

SECTION 11.02 Application of Trust Money. Subject to the provisions of Section 8.06 hereof, all money deposited with
the Trustee pursuant to Section 11.01 hereof shall be held in trust and applied by it, in accordance with the provisions of the Notes and this Indenture, to the payment, either directly or through any Paying Agent (including the Issuers
acting as their own Paying Agent) as the Trustee may determine, to the Persons entitled thereto, of the principal (and premium, if any) and interest for whose payment such money has been deposited with the Trustee; but such money need not be
segregated from other funds except to the extent required by law. 

  
 -106-

 If the Trustee or Paying Agent is unable to apply any money or U.S. Government Securities
in accordance with Section 11.01 hereof by reason of any legal proceeding or by reason of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, the Issuers’
and any Guarantor’s obligations under this Indenture and the Notes shall be revived and reinstated as though no deposit had occurred pursuant to Section 11.01 hereof; provided that if the Issuers have made any payment of
principal of, premium, if any, or interest on any Notes because of the reinstatement of their obligations, the Issuers shall be subrogated to the rights of the Holders of such Notes to receive such payment from the money or U.S. Government
Securities held by the Trustee or Paying Agent. 
 ARTICLE XII 

MISCELLANEOUS 
 SECTION 12.01 Trust Indenture Act Controls. If any provision of this Indenture limits, qualifies or conflicts with the duties imposed by Trust Indenture Act Section 318(c), the imposed duties
shall control. 
 SECTION 12.02 Notices. Any notice or communication by the Issuers, any Guarantor or the Trustee to the
others is duly given if in writing and delivered in person or mailed by first-class mail (registered or certified, return receipt requested), fax or overnight air courier guaranteeing next day delivery, to the others’ address: 

If to the Issuers and/or any Guarantor: 
 CDW Corporation 
 200 N. Milwaukee Avenue 

Vernon Hills, Illinois 60061 
 Attention: Ann E. Ziegler, Chief Financial Officer 
 Phone: (847) 968-0204

 Facsimile: (847) 968-0461 
 Christine Leahy, General Counsel 
 Phone: (847) 968-0203 

Facsimile: (847) 968-0303 
 With a copy to: 
 Kirkland & Ellis LLP 

300 N. LaSalle Street 
 Chicago, Illinois 60654 
 Facsimile: (312) 862-2200 

Attention: James S. Rowe 
 If to the Trustee: 
 U.S. Bank National Association 

60 Livingston Avenue 
 St. Paul, Minnesota 55107-1419 
 Facsimile: (651) 495-8097 

Attention: Raymond S. Haverstock 

  
 -107-

 The Issuers, any Guarantor or the Trustee, by notice to the others, may designate
additional or different addresses for subsequent notices or communications. 
 All notices and communications (other than those
sent to Holders) shall be deemed to have been duly given: at the time delivered by hand, if personally delivered; five (5) calendar days after being deposited in the mail, postage prepaid, if mailed by first-class mail; when receipt
acknowledged, if faxed; and the next Business Day after timely delivery to the courier, if sent by overnight air courier guaranteeing next day delivery; provided that any notice or communication delivered to the Trustee shall be deemed
effective upon actual receipt thereof. 
 Notices given by publication shall be deemed given on the first date on which
publication is made. 
 Any notice or communication to a Holder shall be mailed by first-class mail, certified or registered,
return receipt requested, or by overnight air courier guaranteeing next day delivery to its address shown on the Note Register kept by the Registrar. Any notice or communication shall also be so mailed to any Person described in Trust Indenture Act
Section 313(c), to the extent required by the Trust Indenture Act. Failure to mail a notice or communication to a Holder or any defect in it shall not affect its sufficiency with respect to other Holders. 

If a notice or communication is mailed in the manner provided above within the time prescribed, it is duly given, whether or not the
addressee receives it. 
 If the Issuers mail a notice or communication to Holders, they shall mail a copy to the Trustee and
each Agent at the same time. 
 SECTION 12.03 Communication by Holders of Notes with Other Holders of Notes. Holders may
communicate pursuant to Trust Indenture Act Section 312(b) with other Holders with respect to their rights under this Indenture or the Notes. The Issuers, the Trustee, the Registrar and anyone else shall have the protection of Trust Indenture
Act Section 312(c). 
 SECTION 12.04 Certificate and Opinion as to Conditions Precedent. Upon any request or
application by the Issuers or any of the Guarantors to the Trustee to take any action under this Indenture, the Issuers or such Guarantor, as the case may be, shall furnish to the Trustee: 

(A) An Officers’ Certificate of CDW in form and substance reasonably satisfactory to the Trustee (which shall include
the statements set forth in Section 12.05 hereof) stating that, in the opinion of the signers, all conditions precedent and covenants, if any, provided for in this Indenture relating to the proposed action have been satisfied; and

 (B) An Opinion of Counsel in form and substance reasonably satisfactory to the Trustee (which shall include
the statements set forth in Section 12.05 hereof) stating that, in the opinion of such counsel, all such conditions precedent and covenants have been satisfied. 
 SECTION 12.05 Statements Required in Certificate or Opinion. Each certificate or opinion with respect to compliance with a condition or covenant provided for in this Indenture (other than a
certificate provided pursuant to Section 4.04 hereof) shall comply with the provisions of the Trust Indenture Act Section 314(e) and shall include: 

(A) a statement that the Person making such certificate or opinion has read such covenant or condition; 

  
 -108-

 (B) a brief statement as to the nature and scope of the examination or
investigation upon which the statements or opinions contained in such certificate or opinion are based; 
 (C) a
statement that, in the opinion of such Person, he or she has made such examination or investigation as is necessary to enable him to express an informed opinion as to whether or not such covenant or condition has been complied with (and, in the case
of an Opinion of Counsel, may be limited to reliance on an Officers’ Certificate as to matters of fact); and 
 (D) a statement as to whether or not, in the opinion of such Person, such condition or covenant has been complied with. 
 SECTION 12.06 Rules by Trustee and Agents. The Trustee may make reasonable rules for action by or at a meeting of Holders. The Registrar or Paying Agent may make reasonable rules and set reasonable
requirements for its functions. 
 SECTION 12.07 No Personal Liability of Directors, Officers, Employees and
Stockholders. No director, officer, employee, incorporator, stockholder, unitholder or member of the Escrow Issuer, CDW, FinanceCo, any of CDW’s Subsidiaries or any of its direct or indirect parent companies, including Parent, as such, will
have any liability for any obligations of the Issuers or any Guarantor under the Notes, this Indenture, the Guarantees, or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of Notes by accepting
a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. The waiver may not be effective to waive liabilities under the federal securities laws, and it is the view of the
Commission that such waiver is against public policy. 
 SECTION 12.08 Governing Law. THIS INDENTURE, THE EXCHANGE NOTES
AND ANY GUARANTEE WILL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. 
 SECTION 12.09
Waiver of Jury Trial. EACH OF THE ISSUERS, THE GUARANTORS AND THE TRUSTEE HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO
THIS INDENTURE, THE EXCHANGE NOTES OR THE TRANSACTIONS CONTEMPLATED HEREBY. 
 SECTION 12.10 Force Majeure. In no event
shall the Trustee be responsible or liable for any failure or delay in the performance of its obligations under this Indenture arising out of or caused by, directly or indirectly, forces beyond its reasonable control, including without limitation
strikes, work stoppages, accidents, acts of war or terrorism, civil or military disturbances, nuclear or natural catastrophes or acts of God, and interruptions, loss or malfunctions of utilities, communications or computer (software or hardware)
services. 
 SECTION 12.11 No Adverse Interpretation of Other Agreements. This Indenture may not be used to interpret any
other indenture, loan or debt agreement of the Issuers or their Restricted Subsidiaries or of any other Person. Any such indenture, loan or debt agreement may not be used to interpret this Indenture. 

SECTION 12.12 Successors. All agreements of the Issuers in this Indenture and the Notes shall bind their successors. All
agreements of the Trustee in this Indenture shall bind its successors. All agreements of each Guarantor in this Indenture shall bind its successors, except as otherwise provided in Section 10.08 hereof. 

  
 -109-

 SECTION 12.13 Severability. In case any provision in this Indenture or in the Notes
shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby. 
 SECTION 12.14 Counterpart Originals. The parties may sign any number of copies of this Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.

 SECTION 12.15 Table of Contents, Headings, Etc. The Table of Contents, Cross-Reference Table and headings of the
Articles and Sections of this Indenture have been inserted for convenience of reference only, are not to be considered a part of this Indenture and shall in no way modify or restrict any of the terms or provisions hereof. 

SECTION 12.16 Waiver of Immunities. To the extent that the Issuers may in any jurisdiction claim for themselves or their assets
immunity from a suit, execution, attachment, whether in aid of execution, before judgment or otherwise, or other legal process in connection with and as set out in this Indenture and the Notes and to the extent that in any jurisdiction there may be
immunity attributed to the Issuers or the Issuers’ assets, whether or not claimed, the Issuers hereby irrevocably agree for the benefit of the Holders not to claim, and irrevocably waive, the immunity to the full extent permitted by law.

 [Signatures on following page] 

  
 -110-

 IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be duly executed, as
of the date first written above. 
  

					
	CDW ESCROW CORPORATION
		
	By:	 	 /s/ Robert J. Welyki

		 	Name:	 	    Robert J. Welyki
		 	Title:	 	    Vice President and Treasurer

 SIGNATURE PAGE 
 INDENTURE 

					
	U.S. BANK NATIONAL ASSOCIATION,
	not in its individual capacity but solely as Trustee
		
	By:	 	 /s/ Raymond S. Haverstock

		 	Name:	 	    Raymond S. Haverstock
		 	Title:	 	    Vice President

SIGNATURE PAGE 
 INDENTURE 

 Schedule I 
 Payments and Agreements in Effect on the Closing Date 
 None 

  
 Appendix A-1

 APPENDIX A 
 PROVISIONS RELATING TO NOTES 
 SECTION 1.1 Definitions. 

(a) Capitalized Terms. 
 Capitalized terms used but not defined in this Appendix A have the meanings given to them in the Indenture to which this Appendix A is attached. The following capitalized terms have the following
meanings: 
 “Applicable Procedures” means, with respect to any transfer or transaction involving a Global Note
or beneficial interest therein, the rules and procedures of the Depository for such Global Note, to the extent applicable to such transaction and as in effect from time to time. 

“Clearstream” means Clearstream Banking, Société Anonyme, or any successor securities clearing agency.

 “Euroclear” means the Euroclear Clearance System or any successor securities clearing agency. 

“Global Notes Legend” means the legend set forth under that caption in Exhibit A to this Indenture.

 “QIB” means a “qualified institutional buyer” as defined in Rule 144A promulgated under the
Securities Act. 
 “Registered Exchange Offer” means the offer by the Issuers, pursuant to the Registration
Rights Agreement, to certain Holders of Notes, to issue and deliver to such Holders, in exchange for their Notes, a like aggregate principal amount of Exchange Notes registered under the Securities Act. 

“Registration Rights Agreement” means the Registration Rights Agreement dated as of April 13, 2011 among the
Issuers, the Guarantors and the Initial Purchasers. 
 “Regulation S” means Regulation S promulgated under the
Securities Act. 
 “Regulation S Notes” means all Initial Notes offered and sold outside the United States in
reliance on Regulation S. 
 “Restricted Global Note” means a Global Note bearing the Restricted Notes
Legend. 
 “Restricted Notes Legend” means the legend set forth under that caption in Exhibit A to
this Indenture. 
 “Restricted Period,” with respect to any Notes, means the period of 40 consecutive days
beginning on and including the later of (a) the day on which such Notes are first offered to persons other than distributors (as defined in Regulation S under the Securities Act) in reliance on Regulation S, notice of which day shall be
promptly given by the Issuers to the Trustee, and (b) the date of issuance with respect to any such Notes. 

  
 Appendix A-2

 “Rule 144” means Rule 144 promulgated under the Securities Act. 

“Rule 144A” means Rule 144A promulgated under the Securities Act. 

“Rule 144A Notes” means all Initial Notes offered and sole to QIBs in reliance on Rule 144A. 

“Rule 904” means Rule 904 promulgated under the Securities Act. 

“Shelf Registration Statement” means a registration statement filed by the Issuers in connection with the offer and sale
of Initial Notes pursuant to the Registration Rights Agreement. 
 “Transfer Restricted Notes” means Definitive
Notes and any other Notes that bear or are required to bear the Restricted Notes Legend. 
 “Unrestricted Definitive
Notes” means Definitive Notes and any other Notes that are not required to bear, or are not subject to, the Restricted Notes Legend. 
 “Unrestricted Global Note” means a permanent Global Note representing Notes that do not bear the Restricted Notes Legend. 

(b) Other Definitions. 
  

			
	 Term:
	  	Defined in Section:
	 “Agent Members”
	  	2.1(c)
	 “Global Note”
	  	2.1(b)
	 “Regulation S Global Note”
	  	2.1(b)
	 “Regulation S Permanent Global Note”
	  	2.1(b)
	 “Regulation S Temporary Global Note”
	  	2.1(b)
	 “Rule 144A Global Note”
	  	2.1(b)

 SECTION 2.1 Form and Dating of
Global Notes. 
 (a) Notes shall be issued initially in the form of one or more permanent global Notes in definitive, fully
registered form (collectively, the “Rule 144A Global Note”), in each case without interest coupons and bearing the Global Notes Legend and the applicable restricted securities legend set forth in Exhibit A hereto or one
or more temporary global Notes (collectively, the “Regulation S Temporary Global Note”), in each case without interest coupons and bearing the Global Notes Legend and the applicable restricted securities legend set forth in
Exhibit A, which shall be deposited on behalf of the Holders of the Notes represented thereby with the Custodian, and registered in the name of the Depository or a nominee of the Depository, duly executed by the Issuers and authenticated by
the Trustee as provided in this Indenture. The Notes may thereafter be transferred to, among others, QIBs and purchasers in reliance on Regulation S, subject to the restrictions on transfer set forth herein. Beneficial ownership interests in the
Regulation S Temporary Global Note shall not be exchangeable for interests in the Rule 144A Global Note, a permanent global note (the “Regulation S Permanent Global Note” and, together with the Regulation S Temporary Global
Note, the “Regulation S Global Note”) or any other Note without a Restricted Notes Legend until the expiration of the Restricted Period. The Rule 144A 

  
 Appendix A-3

 
Global Note and the Regulation S Global Note are each referred to herein as a “Global Note” and are collectively referred to herein as “Global Notes.” The
aggregate principal amount of the Global Notes may from time to time be increased or decreased by adjustments made on the records of the Trustee and the Depository or its nominee and on the schedules thereto as hereinafter provided. 

Interests in a Global Note in respect of Notes shall be represented by a Rule 144A or Regulation S Note, as the case may be, in the form
of Exhibit A to the Indenture. 
 The Issuers shall execute and the Trustee shall, in accordance with this
Section 2.1(b)(i) and Section 2.2 and pursuant to an Authentication Order signed by two Officers of the Issuers, authenticate and deliver initially one or more Global Notes that (i) shall be registered in the name of the Depository
for such Global Note or Global Notes or the nominee of such Depository, (ii) shall be delivered by the Trustee to such Depository or pursuant to such Depository’s instructions or held by the Trustee as Custodian and (iii) bear the
Restricted Notes Legend. 
 Members of, or participants in, the Depository, Euroclear or Clearstream (“Agent
Members”) shall have no rights under this Indenture with respect to any Global Note held on their behalf by the Depository or by the Trustee as Custodian or under such Global Note, and the Depository may be treated by the Issuers, the
Trustee and any agent of the Issuers or the Trustee as the absolute owner of such Global Note for all purposes whatsoever. Notwithstanding the foregoing, nothing herein shall prevent the Issuers, the Trustee or any agent of the Issuers or the
Trustee from giving effect to any written certification, proxy or other authorization furnished by the Depository or impair, as between the Depository, Euroclear or Clearstream, as the case may be, and their respective Agent Members, the operation
of customary practices of such Depository governing the exercise of the rights of a holder of a beneficial interest in any Global Note. 
 (b) Transfers of Global Notes shall be limited to transfer in whole, but not in part, to the Depository, its successors or their respective nominees. Interests of beneficial owners in the Global Notes may
be transferred or exchanged for Definitive Notes only in accordance with the applicable rules and procedures of the Depository, Euroclear or Clearstream, as the case may be, and the provisions of Section 2.3. In addition, a Global Note shall be
exchangeable for Definitive Notes if (i) the Depository (x) notifies the Issuers that it is unwilling or unable to continue as Depository for such Global Note and the Issuers thereupon fail to appoint a successor Depository within 90 days
or (y) has ceased to be a clearing agency registered under the Exchange Act, or (ii) if requested by a Holder of a beneficial interest in such Global Notes. In all cases, Definitive Notes delivered in exchange for any Global Note or
beneficial interests therein shall be registered in the names, and issued in any approved denominations, requested by or on behalf of the Depository in accordance with its customary procedures. 

(c) In connection with the transfer of a Global Note as an entirety to beneficial owners pursuant to Section 2.1(a), such Global
Note shall be deemed to be surrendered to the Trustee for cancellation, and the Issuers shall execute, and the Trustee shall authenticate and make available for delivery, to each beneficial owner identified by the Depository in writing in exchange
for its beneficial interest in such Global Note, an equal aggregate principal amount of Definitive Notes of authorized denominations. 
 (iv) Any Transfer Restricted Note delivered in exchange for an interest in a Global Note pursuant to Section 2.3 shall, except as otherwise provided in Section 2.3, bear the Restricted Notes
Legend. 

  
 Appendix A-4

 (v) Notwithstanding the foregoing, through the Restricted Period, a beneficial interest in
such Regulation S Global Note may be held only through Euroclear or Clearstream unless delivery is made in accordance with the applicable provisions of Section 2.3. 
 (vi) The Holder of any Global Note may grant proxies and otherwise authorize any Person, including Agent Members and Persons that may hold interests through Agent Members, to take any action which a
Holder is entitled to take under this Indenture or the Notes. 
 SECTION 2.2 Authentication. The Trustee shall authenticate and make
available for delivery, upon receipt of an Authentication Order signed by two Officers of the Issuers’ Notes. Such order shall specify the amount of the Notes to be authenticated, the date on which the issue of Notes is to be authenticated,
whether the Notes are to be Definitive Notes or Global Notes and whether or not the Notes shall bear the Restricted Notes Legend, or such other information as the Trustee may reasonably request. 

SECTION 2.3 Transfer and Exchange. 
 (a) Transfer and Exchange of Global Notes. Except as otherwise set forth in this Section 2.3, a Global Note may be transferred, in whole and not in part, only to another nominee of the
Depositary or to a successor Depositary or a nominee of such successor Depositary. A beneficial interest in a Global Note may not be exchanged for a Definitive Note unless (i) the Depositary (x) notifies the Issuers that it is unwilling or
unable to continue as Depositary for such Global Note or (y) has ceased to be a clearing agency registered under the Exchange Act and, in either case, a successor Depositary is not appointed by the Issuers within 120 days or (ii) there
shall have occurred and be continuing a Default with respect to the Notes. Upon the occurrence of any of the preceding events in (i) or (ii) above, Definitive Notes delivered in exchange for any Global Note or beneficial interests therein
will be registered in the names, and issued in any approved denominations, requested by or on behalf of the Depositary (in accordance with its customary procedures). Global Notes also may be exchanged or replaced, in whole or in part, as provided in
Sections 2.11 and 2.14 of this Indenture. Every Note authenticated and delivered in exchange for, or in lieu of, a Global Note or any portion thereof, pursuant to this Section 2.3 or Section 2.11 or 2.14 of this
Indenture, shall be authenticated and delivered in the form of, and shall be, a Global Note, except for Definitive Notes issued subsequent to any of the preceding events in (i) or (ii) above and pursuant to Section 2.3(c) or
(e) hereof. A Global Note may not be exchanged for another Note other than as provided in this Section 2.3(a); provided, however, beneficial interests in a Global Note may be transferred and exchanged as provided in
Section 2.3(b), (c) and (d) hereof. 
 (b) Transfer and Exchange of Beneficial Interests in Global Notes.
The transfer and exchange of beneficial interests in the Global Notes shall be effected through the Depository, in accordance with the provisions of this Indenture and the applicable rules and procedures of the Depository. Beneficial interests in
Restricted Global Notes shall be subject to restrictions on transfer comparable to those set forth herein to the extent required by the Securities Act. Transfers and exchanges of beneficial interests in the Global Notes also shall require compliance
with either subparagraph (i) or (ii) below, as applicable, as well as one or more of the other following subparagraphs, as applicable: 
 (i) Transfer of Beneficial Interests in the Same Global Note. Beneficial interests in any Restricted Global Note may be transferred to Persons who take delivery thereof in the form of a beneficial
interest in the same Restricted Global Note in accordance with the transfer restrictions set forth in the Restricted Notes Legend; provided, however, that prior to the expiration of the Restricted Period, transfers of beneficial interests in a
Regulation S Temporary Global Note may not be made to a U. S. Person or for the account or benefit of a U. S. Person (other than an Initial Purchaser). A beneficial interest in an Unrestricted Global Note may be transferred to Persons who take
delivery thereof in the form of a beneficial interest in an Unrestricted Global Note. No written orders or instructions shall be required to be delivered to the Registrar to effect the transfers described in this Section 2.3(b)(i). 

  
 Appendix A-5

 (ii) All Other Transfers and Exchanges of Beneficial Interests in Global
Notes. In connection with all transfers and exchanges of beneficial interests in any Global Note that are not subject to Section 2.3(b)(i), the transferor of such beneficial interest must deliver to the Registrar either (A) (1) a
written order from an Agent Member given to the Depository in accordance with the applicable rules and procedures of the Depository directing the Depository to credit or cause to be credited a beneficial interest in another Global Note in an amount
equal to the beneficial interest to be transferred or exchanged and (2) instructions given in accordance with the applicable rules and procedures of the Depository containing information regarding the Agent Member account to be credited with
such increase or (B) (1) a written order from an Agent Member given to the Depositary in accordance with the applicable rules and procedures of the Depository directing the Depositary to cause to be issued a Definitive Note of the same
series in an amount equal to the beneficial interest to be transferred or exchanged and (2) instructions given by the Depositary to the Registrar containing information regarding the Person in whose name such Definitive Note shall be registered
to effect the transfer or exchange referred to in (1) above; provided that in no event shall Definitive Notes be issued upon the transfer or exchange of beneficial interests in the Regulation S Temporary Global Note prior to (A) the
expiration of the Restricted Period and (B) the receipt by the Registrar of any certificates required pursuant to Rule 903. Upon satisfaction of all of the requirements for transfer or exchange of beneficial interests in Global Notes contained
in this Indenture and the Notes or otherwise applicable under the Securities Act, the Trustee shall adjust the principal amount of the relevant Global Note pursuant to Section 2.3(g). 

(iii) Transfer of Beneficial Interests to Another Restricted Global Note. A beneficial interest in a Restricted
Global Note may be transferred to a Person who takes delivery thereof in the form of a beneficial interest in another Restricted Global Note if the transfer complies with the requirements of Section 2.3(b)(ii) above and the Registrar receives
the following: if the transferee will take delivery in the form of a beneficial interest in either a 144A Global Note or Regulation S Global Note, then the transferor must deliver a certificate in the form attached to the applicable Note.

 (iv) Transfer and Exchange of Beneficial Interests in a Restricted Global Note for Beneficial Interests in
an Unrestricted Global Note. A beneficial interest in a Restricted Global Note may be exchanged by any holder thereof for a beneficial interest in an Unrestricted Global Note or transferred to a Person who takes delivery thereof in the form of a
beneficial interest in an Unrestricted Global Note pursuant to Section 2.21 of this Indenture or if the exchange or transfer complies with the requirements of Section 2.3(b)(ii) hereof and: 

(A) such transfer is effected pursuant to a shelf registration statement; or 

(B) the Registrar receives the following: 

(1) if the holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest
for a beneficial interest in an Unrestricted Global Note, a certificate from such holder in the form attached to the applicable Note; or 
 (2) if the holder of such beneficial interest in a Restricted Global Note proposes to transfer such beneficial interest to a Person who shall take delivery thereof in the form of a beneficial interest in
an Unrestricted Global Note, a certificate from such holder in the form attached to the applicable Note, 

  
 Appendix A-6

 and, in each such case set forth in this subparagraph (B), if the Registrar so requests or
if the applicable rules and procedures of the Depository, Euroclear or Clearstream, as applicable, so require, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer is in compliance with
the Securities Act and that the restrictions on transfer contained herein and in the Restricted Notes Legend are no longer required in order to maintain compliance with the Securities Act. If any such transfer or exchange is effected pursuant to
this subparagraph (iv) at a time when an Unrestricted Global Note has not yet been issued, the Issuers shall issue and, upon receipt of a written order of the Issuers in the form of an Authentication Order in accordance with Section 2.3,
the Trustee shall authenticate one or more Unrestricted Global Notes in an aggregate principal amount equal to the aggregate principal amount of beneficial interests transferred or exchanged pursuant to this subparagraph (iv). 

(v) Transfer and Exchange of Beneficial Interests in an Unrestricted Global Note for Beneficial Interests in a
Restricted Global Note. Beneficial interests in an Unrestricted Global Note cannot be exchanged for, or transferred to Persons who take delivery thereof in the form of, a beneficial interest in a Restricted Global Note. 

(c) Transfer and Exchange of Beneficial Interests in Global Notes for Definitive Notes. 

(i) Beneficial Interests in Restricted Global Notes to Restricted Definitive Notes. If any holder of a beneficial
interest in a Restricted Global Note proposes to exchange such beneficial interest for a Restricted Definitive Note or to transfer such beneficial interest to a Person who takes delivery thereof in the form of a Restricted Definitive Note, then,
upon the occurrence of any of the events in paragraph (i) or (ii) of Section 2.3(a) hereof and receipt by the Registrar of the following documentation: 

(1) if the holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest
for a Restricted Definitive Note, a certificate from such holder substantially in the form attached to the applicable Note; 
 (2) if such beneficial interest is being transferred to a QIB in accordance with Rule 144A, a certificate substantially in the form attached to the applicable Note; 

(3) if such beneficial interest is being transferred to a Non-U.S. Person in an offshore transaction in accordance with
Rule 903 or Rule 904, a certificate substantially in the form attached to the applicable Note; 
 (4) if such
beneficial interest is being transferred pursuant to an exemption from the registration requirements of the Securities Act in accordance with Rule 144, a certificate substantially in the form attached to the applicable Note; 

(5) if such beneficial interest is being transferred to the Issuers or any of its Restricted Subsidiaries, a certificate
substantially in the form attached to the applicable Note; or 

  
 Appendix A-7

 (6) if such beneficial interest is being transferred pursuant to an
effective registration statement under the Securities Act, a certificate substantially in the form attached to the applicable Note, 
 the
Trustee shall cause the aggregate principal amount of the applicable Global Note to be reduced accordingly pursuant to Section 2.3(h) hereof, and the Issuers shall execute and the Trustee shall authenticate and mail to the Person designated in
the instructions a Definitive Note in the applicable principal amount. Any Definitive Note issued in exchange for a beneficial interest in a Restricted Global Note pursuant to this Section 2.3(c)(i) shall be registered in such name or names and
in such authorized denomination or denominations as the holder of such beneficial interest shall instruct the Registrar through instructions from the Depositary and the Agent Member. The Trustee shall mail such Definitive Notes to the Persons in
whose names such Notes are so registered. Any Definitive Note issued in exchange for a beneficial interest in a Restricted Global Note pursuant to this Section 2.3(c)(i) shall bear the Private Placement Legend and shall be subject to all
restrictions on transfer contained therein. 
 (ii) Beneficial Interests in Regulation S Temporary Global Note
to Definitive Notes. Notwithstanding Sections 2.3(c)(i)(A) and (C) hereof, a beneficial interest in the Regulation S Temporary Global Note may not be exchanged for a Definitive Note or transferred to a Person who takes delivery thereof in
the form of a Definitive Note prior to (A) the expiration of the Restricted Period and (B) the receipt by the Registrar of any certificates required pursuant to Rule 903(b)(3)(ii)(B) of the Securities Act, except in the case of a transfer
pursuant to an exemption from the registration requirements of the Securities Act other than Rule 903 or Rule 904. 
 (iii) Beneficial Interests in Restricted Global Notes to Unrestricted Definitive Notes. A holder of a beneficial interest in a Restricted Global Note may exchange such beneficial interest for an
Unrestricted Definitive Note or may transfer such beneficial interest to a Person who takes delivery thereof in the form of an Unrestricted Definitive Note only upon the occurrence of any of the events in subsection (i) or (ii) of
Section 2.3(a) hereof and if: 
 (1) such transfer is effected pursuant to a shelf registration statement;
or 
 (2) the Registrar receives the following: 

if the holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for
an Unrestricted Definitive Note, a certificate from such holder substantially in the form attached to the applicable Note; or 
 if the holder of such beneficial interest in a Restricted Global Note proposes to transfer such beneficial interest to a Person who shall take delivery thereof in the form of an Unrestricted Definitive
Note, a certificate from such holder substantially in the form attached to the applicable Note; 
 and, in each such case set
forth in this subparagraph (B), if the Registrar so requests or if the Applicable Procedures so require, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer is in compliance with the
Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act. 

  
 Appendix A-8

 (iv) Beneficial Interests in Unrestricted Global Notes to Unrestricted
Definitive Notes. If any holder of a beneficial interest in an Unrestricted Global Note proposes to exchange such beneficial interest for a Definitive Note or to transfer such beneficial interest to a Person who takes delivery thereof in the
form of a Definitive Note, then, upon the occurrence of any of the events in subsection (i) or (ii) of Section 2.3(a) hereof and satisfaction of the conditions set forth in Section 2.3(b)(ii) hereof, the Trustee shall cause the
aggregate principal amount of the applicable Global Note to be reduced accordingly pursuant to Section 2.3(h) hereof, and the Issuers shall execute and the Trustee shall authenticate and mail to the Person designated in the instructions a
Definitive Note in the applicable principal amount. Any Definitive Note issued in exchange for a beneficial interest pursuant to this Section 2.3(c)(iv) shall be registered in such name or names and in such authorized denomination or
denominations as the holder of such beneficial interest shall instruct the Registrar through instructions from or through the Depositary and the Agent Member. The Trustee shall mail such Definitive Notes to the Persons in whose names such Notes are
so registered. Any Definitive Note issued in exchange for a beneficial interest pursuant to this Section 2.3(c)(iv) shall not bear the Private Placement Legend. 
 (d) Transfer and Exchange of Definitive Notes for Beneficial Interests in Global Notes. Definitive Notes shall be transferred or exchanged only for beneficial interests in Global Notes. Transfers
and exchanges of beneficial interests in the Global Notes also shall require compliance with either subparagraph (i), (ii) or (iii) below, as applicable: 

(i) Transfer Restricted Notes to Beneficial Interests in Restricted Global Notes. If any Holder of a Transfer
Restricted Note proposes to exchange such Transfer Restricted Note for a beneficial interest in a Restricted Global Note or to transfer such Transfer Restricted Note to a Person who takes delivery thereof in the form of a beneficial interest in a
Restricted Global Note, then, upon receipt by the Registrar of the following documentation: 
 (A) if the Holder
of such Transfer Restricted Note proposes to exchange such Transfer Restricted Note for a beneficial interest in a Restricted Global Note, a certificate from such Holder in the form attached to the applicable Note; 

(B) if such Transfer Restricted Note is being transferred to a QIB in accordance with Rule 144A under the Securities Act,
a certificate from such Holder in the form attached to the applicable Note; 
 (C) if such Transfer Restricted
Note is being transferred to a Non-U.S. Person in an offshore transaction in accordance with Rule 903 or Rule 904 under the Securities Act, a certificate from such Holder in the form attached to the applicable Note; 

(D) if such Transfer Restricted Note is being transferred pursuant to an exemption from the registration requirements of
the Securities Act in accordance with Rule 144 under the Securities Act, a certificate from such Holder in the form attached to the applicable Note; or 
 (E) if such Transfer Restricted Note is being transferred to the Issuers or a Subsidiary thereof, a certificate from such Holder in the form attached to the applicable Note; 

the Trustee shall cancel the Transfer Restricted Note, and increase or cause to be increased the aggregate principal amount of the
appropriate Restricted Global Note. 

  
 Appendix A-9

 (ii) Transfer Restricted Notes to Beneficial Interests in Unrestricted
Global Notes. A Holder of a Transfer Restricted Note may exchange such Transfer Restricted Note for a beneficial interest in an Unrestricted Global Note or transfer such Transfer Restricted Note to a Person who takes delivery thereof in the form
of a beneficial interest in an Unrestricted Global Note in accordance with Section 2.21 of this Indenture and otherwise only if the Registrar receives the following: 

(A) if the Holder of such Transfer Restricted Note proposes to exchange such Transfer Restricted Note for a beneficial
interest in an Unrestricted Global Note, a certificate from such Holder in the form attached to the applicable Note; or 
 (B) if the Holder of such Transfer Restricted Notes proposes to transfer such Transfer Restricted Note to a Person who shall take delivery thereof in the form of a beneficial interest in an Unrestricted
Global Note, a certificate from such Holder in the form attached to the applicable Note, 
 and, in each such case, if the
Registrar so requests or if the applicable rules and procedures of the Depository, Euroclear or Clearstream, as applicable, so require, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer
is in compliance with the Securities Act and that the restrictions on transfer contained herein and in the Restricted Notes Legend are no longer required in order to maintain compliance with the Securities Act. Upon satisfaction of the conditions of
this subparagraph (ii), the Trustee shall cancel the Transfer Restricted Notes and increase or cause to be increased the aggregate principal amount of the Unrestricted Global Note. If any such transfer or exchange is effected pursuant to this
subparagraph (ii) at a time when an Unrestricted Global Note has not yet been issued, the Issuers shall issue and, upon receipt of an written order of the Issuers in the form of an Officers’ Certificate, the Trustee shall authenticate one
or more Unrestricted Global Notes in an aggregate principal amount equal to the aggregate principal amount of Transfer Restricted Notes transferred or exchanged pursuant to this subparagraph (ii). 

(iii) Unrestricted Definitive Notes to Beneficial Interests in Unrestricted Global Notes. A Holder of an
Unrestricted Definitive Note may exchange such Unrestricted Definitive Note for a beneficial interest in an Unrestricted Global Note or transfer such Unrestricted Definitive Note to a Person who takes delivery thereof in the form of a beneficial
interest in an Unrestricted Global Note at any time. Upon receipt of a request for such an exchange or transfer, the Trustee shall cancel the applicable Unrestricted Definitive Note and increase or cause to be increased the aggregate principal
amount of one of the Unrestricted Global Notes. If any such transfer or exchange is effected pursuant to this subparagraph (iii) at a time when an Unrestricted Global Note has not yet been issued, the Issuers shall issue and, upon receipt of a
written order of the Issuers in the form of an Officers’ Certificate, the Trustee shall authenticate one or more Unrestricted Global Notes in an aggregate principal amount equal to the aggregate principal amount of Unrestricted Definitive Notes
transferred or exchanged pursuant to this subparagraph (iii). 
 (iv) Unrestricted Definitive Notes to
Beneficial Interests in Restricted Global Notes. An Unrestricted Definitive Note cannot be exchanged for, or transferred to a Person who takes delivery thereof in the form of, a beneficial interest in a Restricted Global Note. 

(e) Transfer and Exchange of Definitive Notes for Definitive Notes. Upon request by a Holder of Definitive Notes and such
Holder’s compliance with the provisions of this Section 2.3(e), the Registrar shall register the transfer or exchange of Definitive Notes. Prior to such registration of 

  
 Appendix A-10

 
transfer or exchange, the requesting Holder shall present or surrender to the Registrar the Definitive Notes duly endorsed or accompanied by a written instruction of transfer in form satisfactory
to the Registrar duly executed by such Holder or by its attorney, duly authorized in writing. In addition, the requesting Holder shall provide any additional certifications, documents and information, as applicable, required pursuant to the
following provisions of this Section 2.3(e). 
 (i) Transfer Restricted Notes to Transfer Restricted
Notes. A Transfer Restricted Note may be transferred to and registered in the name of a Person who takes delivery thereof in the form of a Transfer Restricted Note if the Registrar receives the following: 

(A) if the transfer will be made pursuant to Rule 144A under the Securities Act, then the transferor must deliver a
certificate in the form attached to the applicable Note; 
 (B) if the transfer will be made pursuant to Rule 903
or Rule 904 under the Securities Act, then the transferor must deliver a certificate in the form attached to the applicable Note; 
 (C) if the transfer will be made pursuant to an exemption from the registration requirements of the Securities Act in accordance with Rule 144 under the Securities Act, a certificate in the form attached
to the applicable Note; 
 (D) if such transfer will be made to the Issuers or a Subsidiary thereof, a
certificate in the form attached to the applicable Note. 
 (ii) Transfer Restricted Notes to Unrestricted
Definitive Notes. Any Transfer Restricted Note may be exchanged by the Holder thereof for an Unrestricted Definitive Note or transferred to a Person who takes delivery thereof in the form of an Unrestricted Definitive Note in accordance with
Section 2.21 of this Indenture or otherwise only if the Registrar receives the following: 
 (1) if
the Holder of such Transfer Restricted Note proposes to exchange such Transfer Restricted Note for an Unrestricted Definitive Note, a certificate from such Holder in the form attached to the applicable Note; or 

(2) if the Holder of such Transfer Restricted Note proposes to transfer such Notes to a Person who shall take delivery
thereof in the form of an Unrestricted Definitive Note, a certificate from such Holder in the form attached to the applicable Note, 
 and, in each such case, if the Registrar so requests, an Opinion of Counsel in form reasonably acceptable to the Issuers to the effect that such exchange or transfer is in compliance with the Securities
Act and that the restrictions on transfer contained herein and in the Restricted Notes Legend are no longer required in order to maintain compliance with the Securities Act. 

(iii) Unrestricted Definitive Notes to Unrestricted Definitive Notes. A Holder of an Unrestricted Definitive Note
may transfer such Unrestricted Definitive Note to a Person who takes delivery thereof in the form of an Unrestricted Definitive Note at any time. Upon receipt of a request to register such a transfer, the Registrar shall register the Unrestricted
Definitive Note pursuant to the instructions from the Holder thereof. 

  
 Appendix A-11

 (iv) Unrestricted Definitive Notes to Transfer Restricted Notes. An
Unrestricted Definitive Note cannot be exchanged for, or transferred to a Person who takes delivery thereof in the form of, a Transfer Restricted Note. 
 At such time as all beneficial interests in a particular Global Note have been exchanged for Definitive Notes or a particular Global Note has been redeemed, repurchased or canceled in whole and not in
part, each such Global Note shall be returned to or retained and canceled by the Trustee in accordance with Section 2.15 of this Indenture. At any time prior to such cancellation, if any beneficial interest in a Global Note is exchanged
for or transferred to a Person who will take delivery thereof in the form of a beneficial interest in another Global Note or for Definitive Notes, the principal amount of Notes represented by such Global Note shall be reduced accordingly and an
endorsement shall be made on such Global Note by the Trustee or by the Depository at the direction of the Trustee to reflect such reduction; and if the beneficial interest is being exchanged for or transferred to a Person who will take delivery
thereof in the form of a beneficial interest in another Global Note, such other Global Note shall be increased accordingly and an endorsement shall be made on such Global Note by the Trustee or by the Depository at the direction of the Trustee to
reflect such increase. 
 (f) Legend. The following legends shall appear on the face of all Global Notes and Definitive
Notes issued under this Indenture unless specifically stated otherwise in the applicable provisions of this Indenture: 
 (i)
Restricted Notes Legends 
 (A) Except as permitted by subparagraph (B) below, each Global Note and
each Definitive Note (and all Notes issued in exchange therefor or substitution therefor) shall bear the legend in substantially the following form:: 
 THE SECURITY (OR ITS PREDECESSOR) EVIDENCED HEREBY WAS ORIGINALLY ISSUED IN A TRANSACTION EXEMPT FROM REGISTRATION UNDER SECTION 5 OF THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE
“SECURITIES ACT”), AND THE SECURITY EVIDENCED HEREBY MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER OF THE SECURITY EVIDENCED HEREBY IS HEREBY
NOTIFIED THAT THE SELLER MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER. THE HOLDER OF THE SECURITY EVIDENCED HEREBY AGREES FOR THE BENEFIT OF THE COMPANY THAT (A) SUCH
SECURITY MAY BE RESOLD, PLEDGED OR OTHERWISE TRANSFERRED, ONLY (1)(a) INSIDE THE UNITED STATES TO A PERSON WHO THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) PURCHASING FOR
ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A UNDER THE SECURITIES ACT, (b) OUTSIDE THE UNITED STATES TO A FOREIGN PERSON IN A TRANSACTION MEETING THE REQUIREMENTS
OF RULE 903 OR RULE 904 OF REGULATION S UNDER THE SECURITIES ACT, (c) PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER (IF APPLICABLE) OR (d) IN ACCORDANCE WITH ANOTHER EXEMPTION FROM THE
REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, (2) TO THE COMPANY OR (3) PURSUANT TO AN EFFECTIVE REGISTRATION 

  
 Appendix A-12

 
STATEMENT AND, IN EACH CASE, IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES OR ANY OTHER APPLICABLE JURISDICTION AND (B) THE HOLDER WILL, AND EACH
SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER OF THE SECURITY EVIDENCED HEREBY OF THE RESALE RESTRICTIONS SET FORTH IN CLAUSE (A) ABOVE. PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH (A)(1)(c) OR (d) ABOVE, THE
COMPANY AND THE TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN COMPLIANCE WITH THE SECURITIES
ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION CAN BE MADE AS TO THE AVAILABILITY OF THE EXEMPTION PROVIDED BY RULE 144 FOR RESALE OF THE SECURITY EVIDENCED HEREBY. 

Each Definitive Note shall bear the following additional legend: 

IN CONNECTION WITH ANY TRANSFER, THE HOLDER WILL DELIVER TO THE REGISTRAR AND TRANSFER AGENT SUCH CERTIFICATES AND OTHER
INFORMATION AS SUCH TRANSFER AGENT MAY REASONABLY REQUIRE TO CONFIRM THAT THE TRANSFER COMPLIES WITH THE FOREGOING RESTRICTIONS. 
 (B) Notwithstanding the foregoing, any Global Note or Definitive Note issued pursuant to subparagraph (b)(iv), (c)(iii), (c)(iv), (d)(ii), (d)(iii), (e)(ii), (e)(iii) or (f) of this
Section 2.3 (and all Notes issued in exchange therefor or substitution thereof) shall not bear the Private Placement Legend, including for the avoidance of doubt, any Exchange Notes issued in accordance with Section 2.21 of this
Indenture. 
 (ii) Global Note Legend. Each Global Note shall bear a legend in substantially the following
form: 
 UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK
CORPORATION (“DTC”), NEW YORK, NEW YORK, TO CDW OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO., OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL
INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
 TRANSFERS OF THIS GLOBAL
NOTE SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO DTC, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR’S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL NOTE SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH
THE RESTRICTIONS SET FORTH IN THE INDENTURE REFERRED TO ON THE REVERSE HEREOF. 

  
 Appendix A-13

 (iii) Regulation S Temporary Global Note Legend. The Regulation S
Temporary Global Note shall bear a legend in substantially the following form: 
 EXCEPT AS SET FORTH BELOW, BENEFICIAL
OWNERSHIP INTERESTS IN THIS REGULATION S TEMPORARY GLOBAL NOTE WILL NOT BE EXCHANGEABLE FOR INTERESTS IN THE REGULATION S PERMANENT GLOBAL NOTE OR ANY OTHER NOTE REPRESENTING AN INTEREST IN THE NOTES REPRESENTED HEREBY WHICH DO NOT CONTAIN A LEGEND
CONTAINING RESTRICTIONS ON TRANSFER, UNTIL THE EXPIRATION OF THE “40 DAY DISTRIBUTION COMPLIANCE PERIOD” (WITHIN THE MEANING OF RULE 903(B)(2) OF REGULATION S UNDER THE SECURITIES ACT) AND THEN ONLY UPON CERTIFICATION IN FORM REASONABLY
SATISFACTORY TO THE TRUSTEE THAT SUCH BENEFICIAL INTERESTS ARE OWNED EITHER BY NON U.S. PERSONS OR U.S. PERSONS WHO PURCHASED SUCH INTERESTS IN A TRANSACTION THAT DID NOT REQUIRE REGISTRATION UNDER THE SECURITIES ACT. DURING SUCH 40 DAY DISTRIBUTION
COMPLIANCE PERIOD, BENEFICIAL OWNERSHIP INTERESTS IN THIS REGULATION S TEMPORARY GLOBAL NOTE MAY ONLY BE SOLD, PLEDGED OR TRANSFERRED ONLY (A) TO CDW, (B) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE
SECURITIES ACT, (C) FOR SO LONG AS THE NOTES ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A UNDER THE SECURITIES ACT (“RULE 144A”), TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS DEFINED IN RULE
144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND SALES THAT OCCUR OUTSIDE THE UNITED
STATES WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT OR (E) PURSUANT TO ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO CDW’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH
OFFER, SALE OR TRANSFER PURSUANT TO CLAUSES (D) OR (E) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, IN EACH OF CASES (A) THROUGH (E) IN ACCORDANCE WITH ANY
APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES AND OTHER JURISDICTIONS. HOLDERS OF INTERESTS IN THIS REGULATION S TEMPORARY GLOBAL NOTE WILL NOTIFY ANY PURCHASER OF THIS NOTE OF THE RESALE RESTRICTIONS REFERRED TO ABOVE, IF THEN
APPLICABLE. BY ITS ACQUISITION HEREOF, THE HOLDER HEREOF REPRESENTS THAT IT IS NOT A U.S. PERSON NOR IS IT PURCHASING FOR THE ACCOUNT OF A U.S. PERSON AND IS ACQUIRING THIS SECURITY IN AN OFFSHORE TRANSACTION IN ACCORDANCE WITH REGULATION S UNDER
THE SECURITIES ACT. 
 BENEFICIAL INTERESTS IN A RULE 144A GLOBAL NOTE MAY BE TRANSFERRED TO A PERSON WHO TAKES DELIVERY IN THE
FORM OF AN INTEREST IN THE REGULATION S GLOBAL NOTE, WHETHER BEFORE OR AFTER THE EXPIRATION OF THE 40-DAY DISTRIBUTION COMPLIANCE PERIOD, ONLY IF THE TRANSFEROR FIRST DELIVERS TO THE TRUSTEE A WRITTEN CERTIFICATE (IN THE FORM ATTACHED TO THIS
CERTIFICATE) TO THE EFFECT THAT SUCH TRANSFER IS BEING MADE IN ACCORDANCE WITH RULE 903 OR 904 OF REGULATION S OR RULE 144 (IF AVAILABLE) 
 (g) Cancellation or Adjustment of Global Note. At such time as all beneficial interests in a particular Global Note have been exchanged for Definitive Notes or a particular Global Note has been
redeemed, repurchased or canceled in whole and not in part, each such Global Note shall be returned to or retained and canceled by the Trustee in accordance with Section 2.15 of this Indenture. At any time prior to such cancellation, if
any beneficial interest in a Global Note is exchanged for or transferred to a Person who will take delivery thereof in the form of a beneficial interest in another Global 

  
 Appendix A-14

 
Note or for Definitive Notes, the principal amount of Notes represented by such Global Note shall be reduced accordingly and an endorsement shall be made on such Global Note by the Trustee or by
the Depository at the direction of the Trustee to reflect such reduction; and if the beneficial interest is being exchanged for or transferred to a Person who will take delivery thereof in the form of a beneficial interest in another Global Note,
such other Global Note shall be increased accordingly and an endorsement shall be made on such Global Note by the Trustee or by the Depository at the direction of the Trustee to reflect such increase. 

(h) Obligations with Respect to Transfers and Exchanges of Notes. 

(i) To permit registrations of transfers and exchanges, the Issuers shall execute and the Trustee shall authenticate
Definitive Notes and Global Notes at the Registrar’s request. 
 (ii) No service charge shall be made for
any registration of transfer or exchange, but the Issuers may require payment of a sum sufficient to cover any transfer tax, assessments or similar governmental charges payable in connection therewith (other than any such transfer taxes, assessments
or similar governmental charges payable upon exchanges pursuant to Sections 2.11, 2.14, 3.06, 4.10, 4.14 and 9.05 of this Indenture). 

(iii) Prior to the due presentation for registration of transfer of any Note, the Issuers, the Trustee, the Paying Agent
or the Registrar may deem and treat the person in whose name a Note is registered as the absolute owner of such Note for the purpose of receiving payment of principal of and interest on such Note and for all other purposes whatsoever, whether or not
such Note is overdue, and none of the Issuers, the Trustee, the Paying Agent or the Registrar shall be affected by notice to the contrary. 
 (iv) All Notes issued upon any transfer or exchange pursuant to the terms of the Indenture shall evidence the same debt and shall be entitled to the same benefits under the Indenture as the Notes
surrendered upon such transfer or exchange. 
 (i) No Obligation of the Trustee. 

(i) The Trustee shall have no responsibility or obligation to any beneficial owner of a Global Note, a member of, or a
participant in the Depository or any other Person with respect to the accuracy of the records of the Depository or its nominee or of any participant or member thereof, with respect to any ownership interest in the Notes or with respect to the
delivery to any participant, member, beneficial owner or other Person (other than the Depository) of any notice (including any notice of redemption or repurchase) or the payment of any amount, under or with respect to such Notes. All notices and
communications to be given to the Holders and all payments to be made to Holders under the Notes shall be given or made only to the registered Holders (which shall be the Depository or its nominee in the case of a Global Note). The rights of
beneficial owners in any Global Note shall be exercised only through the Depository subject to the applicable rules and procedures of the Depository. The Trustee may rely and shall be fully protected in relying upon information furnished by the
Depository with respect to its members, participants and any beneficial owners. 
 (ii) The Trustee shall have no
obligation or duty to monitor, determine or inquire as to compliance with any restrictions on transfer imposed under this Indenture or under applicable law with respect to any transfer of any interest in any Note (including any transfers between or
among Depository participants, members or beneficial owners in any Global Note) other than to require delivery of such certificates and other documentation or evidence as are expressly required by, and to do so if and when expressly required by, the
terms of this Indenture, and to examine the same to determine substantial compliance as to form with the express requirements hereof. 

  
 Appendix A-15

 EXHIBIT A 
 [FORM OF FACE OF NOTE] 
 [Global Notes Legend] 

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION
(“DTC”), NEW YORK, NEW YORK, TO CDW OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO., OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS
WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
 TRANSFERS OF THIS GLOBAL
NOTE SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO DTC, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR’S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL NOTE SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH
THE RESTRICTIONS SET FORTH IN THE INDENTURE REFERRED TO ON THE REVERSE HEREOF. 
 [Restricted Notes Legend] 

THE SECURITY (OR ITS PREDECESSOR) EVIDENCED HEREBY WAS ORIGINALLY ISSUED IN A TRANSACTION EXEMPT FROM REGISTRATION UNDER SECTION 5 OF THE
UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND THE SECURITY EVIDENCED HEREBY MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH
PURCHASER OF THE SECURITY EVIDENCED HEREBY IS HEREBY NOTIFIED THAT THE SELLER MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER. THE HOLDER OF THE SECURITY EVIDENCED HEREBY AGREES
FOR THE BENEFIT OF THE COMPANY THAT (A) SUCH SECURITY MAY BE RESOLD, PLEDGED OR OTHERWISE TRANSFERRED, ONLY (1)(a) INSIDE THE UNITED STATES TO A PERSON WHO THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN
RULE 144A UNDER THE SECURITIES ACT) PURCHASING FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A UNDER THE SECURITIES ACT, (b) OUTSIDE THE UNITED STATES TO A FOREIGN
PERSON IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 903 OR RULE 904 OF REGULATION S UNDER THE SECURITIES ACT, (c) PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER (IF APPLICABLE) OR
(d) IN ACCORDANCE WITH ANOTHER EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, (2) TO THE COMPANY OR (3) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT AND, IN EACH CASE, IN ACCORDANCE WITH ANY APPLICABLE
SECURITIES LAWS OF ANY STATE OF THE UNITED 

  
 Exhibit A-1

 
STATES OR ANY OTHER APPLICABLE JURISDICTION AND (B) THE HOLDER WILL, AND EACH SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER OF THE SECURITY EVIDENCED HEREBY OF THE RESALE
RESTRICTIONS SET FORTH IN CLAUSE (A) ABOVE. PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH (A)(1)(c) OR (d) ABOVE, THE COMPANY AND THE TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS
OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION CAN BE MADE AS TO THE AVAILABILITY OF THE
EXEMPTION PROVIDED BY RULE 144 FOR RESALE OF THE SECURITY EVIDENCED HEREBY. 
 [Regulation S Temporary Global Notes Legend]

 EXCEPT AS SET FORTH BELOW, BENEFICIAL OWNERSHIP INTERESTS IN THIS REGULATION S TEMPORARY GLOBAL NOTE WILL NOT BE EXCHANGEABLE
FOR INTERESTS IN THE REGULATION S PERMANENT GLOBAL NOTE OR ANY OTHER NOTE REPRESENTING AN INTEREST IN THE NOTES REPRESENTED HEREBY WHICH DO NOT CONTAIN A LEGEND CONTAINING RESTRICTIONS ON TRANSFER, UNTIL THE EXPIRATION OF THE “40 DAY
DISTRIBUTION COMPLIANCE PERIOD” (WITHIN THE MEANING OF RULE 903(B)(2) OF REGULATION S UNDER THE SECURITIES ACT) AND THEN ONLY UPON CERTIFICATION IN FORM REASONABLY SATISFACTORY TO THE TRUSTEE THAT SUCH BENEFICIAL INTERESTS ARE OWNED EITHER BY
NON U.S. PERSONS OR U.S. PERSONS WHO PURCHASED SUCH INTERESTS IN A TRANSACTION THAT DID NOT REQUIRE REGISTRATION UNDER THE SECURITIES ACT. DURING SUCH 40 DAY DISTRIBUTION COMPLIANCE PERIOD, BENEFICIAL OWNERSHIP INTERESTS IN THIS REGULATION S
TEMPORARY GLOBAL NOTE MAY ONLY BE SOLD, PLEDGED OR TRANSFERRED ONLY (A) TO CDW, (B) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT, (C) FOR SO LONG AS THE NOTES ARE ELIGIBLE FOR RESALE
PURSUANT TO RULE 144A UNDER THE SECURITIES ACT (“RULE 144A”), TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED
INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND SALES THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT OR
(E) PURSUANT TO ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO CDW’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSES (D) OR (E) TO
REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, IN EACH OF CASES (A) THROUGH (E) IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES AND
OTHER JURISDICTIONS. HOLDERS OF INTERESTS IN THIS REGULATION S TEMPORARY GLOBAL NOTE WILL NOTIFY ANY PURCHASER OF THIS NOTE OF THE RESALE RESTRICTIONS REFERRED TO ABOVE, IF THEN APPLICABLE. BY ITS ACQUISITION HEREOF, THE HOLDER HEREOF REPRESENTS
THAT IT IS NOT A U.S. PERSON NOR IS IT PURCHASING FOR THE ACCOUNT OF A U.S. PERSON AND IS ACQUIRING THIS SECURITY IN AN OFFSHORE TRANSACTION IN ACCORDANCE WITH REGULATION S UNDER THE SECURITIES ACT. 

  
 Exhibit A-2

 BENEFICIAL INTERESTS IN A RULE 144A GLOBAL NOTE MAY BE TRANSFERRED TO A PERSON WHO TAKES
DELIVERY IN THE FORM OF AN INTEREST IN THE REGULATION S GLOBAL NOTE, WHETHER BEFORE OR AFTER THE EXPIRATION OF THE 40-DAY DISTRIBUTION COMPLIANCE PERIOD, ONLY IF THE TRANSFEROR FIRST DELIVERS TO THE TRUSTEE A WRITTEN CERTIFICATE (IN THE FORM
ATTACHED TO THIS CERTIFICATE) TO THE EFFECT THAT SUCH TRANSFER IS BEING MADE IN ACCORDANCE WITH RULE 903 OR 904 OF REGULATION S OR RULE 144 (IF AVAILABLE). 
 Each Definitive Note shall bear the following additional legend: 
 IN CONNECTION
WITH ANY TRANSFER, THE HOLDER WILL DELIVER TO THE REGISTRAR AND TRANSFER AGENT SUCH CERTIFICATES AND OTHER INFORMATION AS SUCH TRANSFER AGENT MAY REASONABLY REQUIRE TO CONFIRM THAT THE TRANSFER COMPLIES WITH THE FOREGOING RESTRICTIONS. 

  
 Exhibit A-3

 CUSIP [            ] 

ISIN [            ]1 

[RULE 144A] [REGULATION S] [GLOBAL] NOTE 
 8.5% SENIOR NOTE DUE 2019 
  

			
	 No.
	  	[$        ]                   
 

 CDW ESCROW CORPORATION 
 promise to pay to U.S. Bank National Association or registered assigns, the principal sum of
                                 United States Dollars on April 1, 2019.

 Interest Payment Dates: April 1 and October 1, commencing October 1, 2011 

Record Dates: March 15 and September 15 
 Additional provisions of this Note are set forth on the other side of this Note. 
  

 

	1 	 144A CUSIP: 12513NAA2 

 Reg S CUSIP: U1253WAA6 
 144A ISIN: US12513NAA28 

Reg S ISIN: USU1253WAA63 

  
 Exhibit A-4

 IN WITNESS HEREOF, the Issuers have caused this instrument to be duly executed. 

Dated:             , 20     

CDW ESCROW CORPORATION 
  

			
	By:	 	  

		 	Name:
		 	Title:

  
 Exhibit A-5

 This is one of the Notes referred to in the within-mentioned Indenture: 

 

			
	 U.S. BANK NATIONAL ASSOCIATION,
 as Trustee

		
	By:	 	  

		 	Authorized Signatory

  
 Exhibit A-6

 [Back of Note] 
 8.5% Senior Note due 2019 
 Capitalized terms used herein shall have the meanings
assigned to them in the Indenture referred to below unless otherwise indicated. 
 1. INTEREST. Prior to the consummation of the
Assumption, the term “Issuers” refers to CDW Escrow Corporation, a Delaware corporation. After the consummation of the Assumption, the term “Issuers” refers to CDW LLC, an Illinois corporation (“CDW”), and CDW Finance
Corporation, a Delaware corporation (“FinanceCo”). 
 The Issuers promise to pay interest on the Notes entirely
in cash. Interest on this Note will accrue at a fixed rate per annum of 8.5%. Notwithstanding the foregoing, if all or any portion of the principal amount of the Notes or any interest payable thereon shall not be paid when due (whether at maturity,
by acceleration or otherwise), the Notes shall bear interest in cash at a rate per annum that is 2% above the rate otherwise applicable thereto from the date of such nonpayment until the amount not so paid is paid in full (both before and after
judgment), and the Issuers shall pay interest in cash on overdue installments of interest at the same rate to the extent lawful. Interest and Additional Interest, if any, will be computed on the basis of a 360-day year of twelve 30-day months.

 The Issuers will pay interest on each Note semi-annually on each April 1 and October 1 and on the Maturity Date.

 2. METHOD OF PAYMENT. The Issuers will pay interest on this Note to the Person who is the registered
Holder of this Note at the close of business on the Record Date (whether or not a Business Day) next preceding the Interest Payment Date, even if this Note is cancelled after such record date and on or before such Interest Payment Date, except as
provided in Section 2.16 of the Indenture with respect to defaulted interest. Payment of interest will be made at the office or agency of the Issuers maintained for such purpose within the Borough of Manhattan, the City and State of New York
or, at the option of the Issuers, payment of interest may be made by check mailed to the Holders at their addresses set forth in the Note Register of Holders, provided that [all payments of principal, premium, if any, and interest on, this
Note will be made by wire transfer of immediately available funds to the accounts specified by the Holder or Holders
thereof]2 [all payments of principal, premium, if any, and
interest on, this Note will be made by wire transfer to a U.S. dollar account maintained by the payee with a bank in the United States if such Holder elects payment by wire transfer by giving written notice to the Trustee or the Paying Agent to such
effect designating such account no later than 30 days immediately preceding the relevant due date for payment (or such other date as the Trustee may accept in its discretion)].3 Such payment shall be in such coin or currency of the United States of America as at the time of payment is legal
tender for payment of public and private debts. 
  
  

	2 	 Applicable if this Note is represented by a Global Note registered in the name of or held by DTC or its nominee on the relevant record date.

	3 	 Applicable if this Note is a Definitive Note. 

  
 Exhibit A-7

 3. PAYING AGENT AND REGISTRAR. Initially, U.S. Bank National Association, the Trustee under
the Indenture, will act as Paying Agent and Registrar. The Issuers may change any Paying Agent, Registrar or co-registrar without notice to the Holders. The Issuers or any of their Restricted Subsidiaries may act as Paying Agent, Registrar or
co-registrar. 
 4. INDENTURE. The Issuers issued the Notes under an Indenture, dated as of April 13, 2011 (the
“Indenture”), between CDW Escrow Corporation, a Delaware corporation, and the Trustee. This Note is one of a duly authorized issue of notes of the Issuers designated as its Senior Notes due 2019. Except as otherwise provided in
Section 9.02, all Notes shall vote and consent together on all matters as one class, and, except as otherwise provided in Section 9.02, none of the Notes will have the right to vote or consent as a class separate from one another on any
matter. 
 The terms of the Notes include those stated in Sections 1.03, 1.05, 2.09, 7.06, 7.07, 7.08, 7.10, 7.11, 12.01, 12.02
and 12.03 of the Indenture, which are made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”). Terms defined in the Indenture and not defined herein have the meanings
ascribed thereto in the Indenture. The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of such terms. To the extent any provision of this Note conflicts with the express provisions of the
Indenture, the provisions of the Indenture shall govern and be controlling. 
 The Notes are senior secured obligations of the
Issuers. This Note is one of the Notes referred to in the Indenture. The Indenture imposes certain limitations on the ability of the Issuers and their Restricted Subsidiaries to, among other things, make certain Investments and other Restricted
Payments, pay dividends and other distributions, incur Indebtedness, consolidate, enter into or permit certain transactions with Affiliates, create or incur Liens and make asset sales. The Indenture also imposes limits on the ability of the Issuers
and each Guarantor to consolidate or merge with or into any other Person or convey, transfer or lease all or substantially all its property. These covenants are subject to important exceptions and qualifications. 

5. OPTIONAL REDEMPTION. At any time after the Release Date and the Assumption but prior to April 1, 2015, the Issuers may redeem all
or a part of the Notes, upon not less than 30 nor more than 60 days’ prior notice mailed by first-class mail to each Holder’s registered address, at a redemption price equal to 100% of the principal amount of Notes redeemed plus the
Applicable Premium as of the date of redemption, and accrued and unpaid interest and Additional Interest, if any, to the date of redemption (the “Redemption Date”), subject to the rights of Holders of Notes on any relevant record
date to receive interest due on the relevant interest payment date. 
 On or after April 1, 2015, the Issuers may redeem
all or part of the Notes upon not less than 30 nor more than 60 days’ notice, at the redemption prices (expressed as percentages of principal amount) set forth below plus accrued and unpaid interest and Additional Interest, if any, on the Notes
redeemed, to the Redemption Date (subject to the rights of Holders of Notes on any relevant record date to receive interest due on the relevant interest payment date), if redeemed during the twelve-month period beginning on April 1 of the years
indicated below: 
  

					
	 Year
	  	Percentage	 
	 2015
	  	 	104.250	% 
	 2016
	  	 	102.125	% 
	 2017 and thereafter
	  	 	100.000	% 

  
 Exhibit A-8

 At any time after the Release Date and the Assumption but prior to April 1, 2014, the
Issuers may on any one or more occasions redeem up to 40% of the aggregate principal amount of Notes issued under this Indenture at a redemption price of 108.500% of the principal amount, plus accrued and unpaid interest and Additional Interest, if
any, to the Redemption Date, with the Net Cash Proceeds of one or more Equity Offerings; provided that: (1) at least 60% of the aggregate principal amount of Notes originally issued under the Indenture remains outstanding immediately
after the occurrence of such redemption (excluding Notes held by the Issuers and their Subsidiaries); and (2) the redemption occurs within 90 days of the date of the closing of such Equity Offering and upon not less than 30 nor more than 60
days’ prior notice mailed by first-class mail to each Holder’s registered address and otherwise in accordance with the procedures set forth in this Indenture. 
 6. MANDATORY REDEMPTION. The Issuers shall not be required to make mandatory redemption payments with respect to the Notes except in accordance with Section 3.10 of the Indenture. 

7. NOTICE OF REDEMPTION. Subject to Section 3.03 of the Indenture, notice of redemption will be mailed by first-class mail at least
30 days but not more than 60 days before the Redemption Date (except that redemption notices may be mailed more than 60 days prior to a redemption date if the notice is issued in connection with Article VIII or Article XI of the Indenture) to each
Holder whose Notes are to be redeemed at its registered address or otherwise in accordance with Applicable Procedures. Notes in denominations larger than $2,000 may be redeemed in part but only in whole multiples of $1,000, unless all of the Notes
held by a Holder are to be redeemed. On and after the Redemption Date, interest ceases to accrue on this Note or portions thereof called for redemption. 
 8. OFFERS TO REPURCHASE. Upon the occurrence of a Change of Control, each Holder of a Note will have the right to cause the Issuers to repurchase all or any part of such Holder’s Notes at a
repurchase price in cash equal to 101% of the principal amount of the Notes to be repurchased plus accrued and unpaid interest to the date of repurchase. The Issuers must offer to repurchase the Notes at a purchase price of 100% of their principal
amount, without premium, plus accrued but unpaid interest to the Redemption Date, with the Net Proceeds from certain non-ordinary course Asset Sales pursuant to the terms of Section 4.10 of the Indenture. 

9. GUARANTY. The payment by the Issuers of the principal of, and premium and interest and Additional Interest, if any, on, the Notes is
fully and unconditionally guaranteed on a joint and several senior secured basis by each of the Guarantors to the extent set forth in the Indenture. 
 10. DENOMINATIONS, TRANSFER, EXCHANGE. The Notes are in registered form without coupons in denominations of $2,000 principal amount and integral multiples of $1,000 thereafter. The transfer of Notes may
be registered and Notes may be exchanged as provided in the Indenture. The Registrar and the Trustee may require a Holder, among other things, to furnish appropriate endorsements and transfer documents, and the Issuers may require a Holder to pay
any taxes and fees required by law or permitted by the Indenture. The Issuers need not exchange or register the transfer of any Note or portion of a Note selected for redemption, except for the unredeemed portion of any Note being redeemed in part.
Also, the Issuers need not exchange or register the transfer of any Notes for a period of 15 days before a selection of Notes to be redeemed. 
 11. PERSONS DEEMED OWNERS. The registered Holder of this Note may be treated as its owner for all purposes. 
 12. DISCHARGE AND DEFEASANCE. Subject to certain conditions as set forth in the Indenture, the Issuers at any time may terminate some or all of their obligations under the Notes and the Indenture if the
Issuers deposit with the Trustee money or certain U.S. Government Securities for the payment of principal of, and interest on, the Notes to redemption or maturity, as the case may be. 

  
 Exhibit A-9

 13. AMENDMENT, SUPPLEMENT AND WAIVER. The Indenture, the Guarantees or the Notes may be
amended or supplemented as provided in the Indenture. 
 14. DEFAULTS AND REMEDIES. The Events of Default relating to the Notes
are set forth in Section 6.01 of the Indenture. If any Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in aggregate principal amount of the then outstanding Notes may declare the principal, premium, if any,
interest and any other monetary obligations on all the then outstanding Notes to be due and payable immediately. Notwithstanding the foregoing, in the case of an Event of Default arising from certain events of bankruptcy or insolvency, all
outstanding Notes will become due and payable immediately without further action or notice. Holders may not enforce the Indenture, the Notes or the Guarantees except as provided in the Indenture. Subject to certain limitations, Holders of a majority
in aggregate principal amount of the then outstanding Notes may direct the Trustee in its exercise of any trust or power. The Required Holders by notice to the Trustee may on behalf of the Holders of all of the Notes waive any existing Default or
and its consequences under the Indenture except a continuing Default in payment of the principal of, premium, if any, or interest on, any of the Notes. The Issuers are required to deliver to the Trustee annually a statement regarding compliance with
the Indenture, and the Issuers are required within five (5) Business Days after becoming aware of any Default, to deliver to the Trustee a statement specifying such Default. 

15. AUTHENTICATION. This Note shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose until
authenticated by the manual signature of the Trustee. 
 16. GOVERNING LAW. THE LAWS OF THE STATE OF NEW YORK SHALL GOVERN AND
BE USED TO CONSTRUE THE INDENTURE, THE NOTES AND THE GUARANTEES. 
 17. CUSIP AND ISIN NUMBERS. Pursuant to a recommendation
promulgated by the Committee on Uniform Security Identification Procedures, the Issuers have caused CUSIP and ISIN numbers to be printed on the Notes, and the Trustee may use CUSIP and ISIN numbers in notices of redemption as a convenience to
Holders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon. 

18. SPECIAL MANDATORY REDEMPTION. Except as provided in the next paragraph, all of the Notes will be subject to a mandatory redemption (a
“Special Mandatory Redemption”) in the event that either (i) the Release Date has not occurred on the Escrow End Date or (ii) at least two Business Days prior to the Escrow End Date, the Escrow Issuer has determined, in
its reasonable discretion, that the escrow conditions cannot be satisfied by such date. In the event the Escrow Issuer has determined, in its reasonable discretion, that the escrow conditions cannot be satisfied by the Escrow End Date, CDW will
issue a press release at least two Business Days prior to the Escrow End Date and will redeem the Notes on the Escrow End Date (the “Special Mandatory Redemption Date”). 

In the event that on the Escrow End Date (1) no Default or Event of Default shall have occurred and be continuing hereunder,
(2) the Escrow Issuer has waived clause (c) under Section 4.22 of the Indenture, and (3) at least $400,000,000 in aggregate principal amount of Existing Senior Notes (but not more than the Maximum Tender Amount) are validly
tendered and not validly withdrawn in the Tender Offer, then the Shortfall Amount of Notes will be subject to a Special Mandatory Redemption on the Escrow End Date and the Issuers, as obligors, will assume all of the obligations of the Escrow Issuer
under the remaining aggregate principal amount of Notes and the Indenture and the guarantees of such remaining Notes by the Guarantors will be in full force and effect. The Escrow Issuer will only be entitled

  
 Exhibit A-10

 
to direct the Escrow Agent to release the Escrow Proceeds (less the Shortfall Amount) upon receipt from the Escrow Issuer of an Officers’ Certificate contemporaneously with the release of
the Escrow Proceeds (less the Shortfall Amount) on or prior to the Escrow End Date stipulating that (1) no Default or Event of Default shall have occurred and be continuing under the Indenture, (2) at least $400,000,000 in aggregate
principal amount of Existing Senior Notes (but not more than the Maximum Tender Amount) have been validly tendered and not validly withdrawn in the Tender Offer and (3) the Issuers, as obligors, have assumed all of the obligations of the Escrow
Issuer under the remaining aggregate principal amount of Notes and the Indenture and the guarantees of such remaining Notes by the Guarantors are in full force and effect. 
 The redemption price for any Special Mandatory Redemption will be 100% of the principal amount of any Notes so redeemed. There will be no accrued interest on the Notes and no interest, premium or penalty
will be paid in connection with any Special Mandatory Redemption. 
 Concurrently with release of the amounts necessary to fund
a Special Mandatory Redemption to the paying agent, the Escrow Agent will release any excess of Escrow Proceeds over the mandatory redemption price to the Escrow Issuer, and the Escrow Issuer will be permitted to use such excess Escrow Proceeds at
its discretion. 
 The Issuers will furnish to any Holder upon written request and without charge a copy of the Indenture.
Requests may be made to the Issuers at the following address: 
 CDW LLC 

200 N. Milwaukee Avenue 
 Vernon Hills, IL 60061 
 Facsimile:  (847) 968-0304 

Attention:  Chief Financial Officer 

  
 Exhibit A-11

 ASSIGNMENT FORM 
 To assign this Note, fill in the form below: 
  

			
	(I) or (we) assign and transfer this Note to: 	  	 
		  	(Insert assignee’s legal name)
	 	  	    
	(Insert assignee’s soc. sec. or tax I.D. no.)
	    
	    
	    
	    
	(Print or type assignee’s address and zip code)

  

			
	and irrevocably appoint 	  	 

 agent to transfer this Note on the books of
CDW. The agent may substitute another to act for him. 
 Date:
                     
  

			
	Your Signature:	 	  

		 	 (Sign exactly as your name appears
 on the face of this Note)

 Signature Guarantee*:
                                         
                        
  

	*	Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee). 

  
 Exhibit A-12

 CERTIFICATE TO BE DELIVERED UPON EXCHANGE OR REGISTRATION OF TRANSFER RESTRICTED NOTES

 This certificate relates to $         principal amount of Notes held in (check applicable
space)          book-entry or      definitive form by the undersigned. 
 The undersigned (check one box below): 
  

	 ̈	has requested the Trustee by written order to deliver in exchange for its beneficial interest in the Global Note held by the Depository a Note or Notes in definitive,
registered form of authorized denominations and an aggregate principal amount equal to its beneficial interest in such Global Note (or the portion thereof indicated above); 

 

	 ̈	has requested the Trustee by written order to exchange or register the transfer of a Note or Notes. 

In connection with any transfer of any of the Notes evidenced by this certificate occurring prior to the expiration of the period referred to in
Rule 144(d)(1)(ii) under the Securities Act (or, in the event CDW is, and has been for a period of at least 90 days immediately before the sale, subject to the reporting requirements of section 13 or 15(d) of the Exchange Act, Rule
144(d)(1)(i) under the Securities Act), the undersigned confirms that such Notes are being transferred in accordance with its terms: 

CHECK ONE BOX BELOW 
  

							
		 	(1)    	  	 ̈    	  	to CDW; or
				
		 	(2)	  	 ̈	  	to the Registrar for registration in the name of the Holder, without transfer; or
				
		 	(3)	  	 ̈	  	pursuant to an effective registration statement under the Securities Act of 1933; or
				
		 	(4)	  	 ̈	  	inside the United States to a “qualified institutional buyer” (as defined in Rule 144A under the Securities Act of 1933) that purchases for its own account or
for the account of a qualified institutional buyer to whom notice is given that such transfer is being made in reliance on Rule 144A, in each case pursuant to and in compliance with Rule 144A under the Securities Act of 1933;
or
				
		 	(5)	  	 ̈	  	outside the United States in an offshore transaction within the meaning of Regulation S under the Securities Act in compliance with Rule 904 under the Securities Act of
1933 and such Note shall be held immediately after the transfer through Euroclear or Clearstream until the expiration of the Restricted Period (as defined in the Indenture); or
				
		 	(6)	  	 ̈	  	pursuant to an available exemption from registration under the Securities Act of 1933 provided by Rule 144 thereunder; or
				
		 	(7)	  	 ̈	  	pursuant to another available exemption from registration under the Securities Act of 1933.

  
 Exhibit A-13

 Unless one of the boxes is checked, the Trustee will refuse to register any of the Notes
evidenced by this certificate in the name of any Person other than the registered Holder thereof; provided, however, that if box (5), (6) or (7) is checked, the Trustee may require, prior to registering any such transfer
of the Notes, such legal opinions, certifications and other information as the Issuers have reasonably requested to confirm that such transfer is being made pursuant to an exemption from, or in a transaction not subject to, the registration
requirements of the Securities Act of 1933. 
  

							
		 		 	  
	 	
		 		 	Your Signature	 	
	Signature Guarantee:	 		 		 	
				
	Date:                     	 		 	  
	 	
	Signature must be guaranteed by a participant in a recognized signature guaranty medallion program or other signature guarantor acceptable to the Trustee	 		 	 Signature of Signature
 Guarantee
	 	

 TO BE COMPLETED BY PURCHASER IF (4) ABOVE IS CHECKED. 

The undersigned represents and warrants that it is purchasing this Note for its own account or an account with respect to which it
exercises sole investment discretion and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities Act of 1933, and is aware that the sale to it is being made in reliance on
Rule 144A and acknowledges that it has received such information regarding the Issuers as the undersigned has requested pursuant to Rule 144A or has determined not to request such information and that it is aware that the transferor is
relying upon the undersigned’s foregoing representations in order to claim the exemption from registration provided by Rule 144A. 
  

							
	Dated:                     	 		 	  

		 		 	            NOTICE:	 	 To be executed by
 an
executive officer

  
 Exhibit A-14

 OPTION OF HOLDER TO ELECT PURCHASE 

If you want to elect to have this Note purchased by the Issuers pursuant to Section 4.10 or 4.14 of the Indenture, check the
appropriate box below: 
 [    ]
Section 4.10             [    ] Section 4.14 
 If you want to elect to have only part of this Note purchased by the Issuers pursuant to Section 4.10 or Section 4.14 of the Indenture, state the amount you elect to have purchased: 

$         
 Date:                      

 

			
	Your Signature:	 	  

		 	 (Sign exactly as your name appears
 on the face of this Note)

			
	Tax Identification No.:	 	  

 Signature Guarantee*:
                                         
                    
  

	*	Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee). 

  
 Exhibit A-15

 SCHEDULE OF EXCHANGES OF INTERESTS IN THE GLOBAL NOTE* 

The initial outstanding principal amount of this Global Note is $        . The following
exchanges of a part of this Global Note for an interest in another Global Note or for a Definitive Note or exchanges of a part of another Global or Definitive Note for an interest in this Global Note have been made: 

 

							
	 Amount of

decrease
 in
Principal
 Amount of this
 Global Note
	  	 Amount of increase

in Principal

Amount of this
 Global Note
	  	 Principal Amount

of

this Global Note
 following such
 decrease or

increase
	  	 Signature of

authorized

officer

of Trustee or
 Custodian

		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	

  

	*	This schedule should be included only if the Note is issued in global form. 

  
 Exhibit A-16

 EXHIBIT B 
 FORM OF NOTATIONAL GUARANTEE 
 The Guarantors listed below (hereinafter
referred to as the “Guarantors,” which term includes any successors or assigns under that certain Indenture, dated as of April 13, 2011, between CDW Escrow Corporation and U.S. Bank National Association, as trustee (in such
capacity, the “Trustee”) (as supplemented by that certain Supplemental Indenture, dated as of April 13, 2011, by and among CDW Escrow Corporation, CDW LLC, CDW Finance Corporation, the Guarantors and the Trustee, and as further
amended and supplemented from time to time, the “Indenture”), have guaranteed the Notes and the obligations of the Issuers under the Indenture, which include (i) the due and punctual payment of the principal of, premium, if
any, and interest on the 8.5% Senior Notes due 2019 (the “Notes”) of the Issuers, whether at stated maturity, by acceleration or otherwise, the due and punctual payment of interest on the overdue principal and premium, if any, and
(to the extent permitted by law) interest on any interest, if any, on the Notes, and the due and punctual performance of all other obligations of the Issuers to the Holders or the Trustee all in accordance with the terms set forth in Article X
of the Indenture, and (ii) in case of any extension of time of payment or renewal of any Notes or any such other obligations, that the same will be promptly paid in full when due or performed in accordance with the terms of the extension or
renewal, whether at stated maturity, by acceleration or otherwise. 
 The obligations of each Guarantor to the Holders and to
the Trustee pursuant to this Guarantee and the Indenture are expressly set forth in Article X of the Indenture and reference is hereby made to such Indenture for the precise terms of this Guarantee. 

No stockholder, employee, officer, director, unitholder, member or incorporator, as such, past, present or future of each Guarantor shall
have any liability under this Guarantee by reason of his or its status as such stockholder, employee, officer, director, unitholder, member or incorporator. 
 This is a continuing Guarantee and shall remain in full force and effect and shall be binding upon each Guarantor and its successors and assigns until full and final payment of all of the Issuers’
obligations under the Notes and Indenture or until released in accordance with the Indenture and shall inure to the benefit of the successors and assigns of the Trustee and the Holders, and, in the event of any transfer or assignment of rights by
any Holder or the Trustee, the rights and privileges herein conferred upon that party shall automatically extend to and be vested in such transferee or assignee, all subject to the terms and conditions hereof. This is a Guarantee of payment and not
of collection. 
 This Guarantee shall not be valid or obligatory for any purpose until the certificate of authentication on the
Note upon which this Guarantee is noted shall have been executed by the Trustee under the Indenture by the manual signature of one of its authorized officers. The Obligations of each Guarantor under its Guarantee shall be limited to the extent
necessary to insure that it does not constitute a fraudulent conveyance under applicable law. 

  
 Exhibit B-1

 THE TERMS OF ARTICLE X OF THE INDENTURE ARE INCORPORATED HEREIN BY REFERENCE.

 Capitalized terms used herein have the same meanings given in the Indenture unless otherwise indicated. 

Dated as of                      

 

			
	[Guarantor]
		
	By:	 	  

		 	Name:
		 	Title:

  
 Exhibit B-2

 EXHIBIT C 
 Form of 
 Transferee Letter of Representation 

CDW LLC 
 200 N. Milwaukee Avenue 

Vernon Hills, IL 60061 
 Facsimile:
(847) 968-0461 
 Attention: Chief Financial Officer 
 U.S. Bank National Association 
 60 Livingston Avenue 

St. Paul, Minnesota 55107-1419 
 Facsimile:
(651) 495-8097 
 Attention: Raymond S. Haverstock 
 Ladies and Gentlemen: 
 This certificate is delivered to request a transfer of
$[        ] principal amount of the 8.5% Senior Notes due 2019 (the “Notes”) of CDW LLC and CDW Finance Corporation (collectively, the “Issuers”). 

Upon transfer, the Notes would be registered in the name of the new beneficial owner as follows: 

Name:                        
                                  

Address:                       
                              
 Taxpayer ID
Number:                               

The undersigned represents and warrants to you that: 
 1. We understand that the Notes have not been registered under the Securities Act and, unless so registered, may not be sold except as permitted in the following sentence. We agree on our own behalf and
on behalf of any investor account for which we are purchasing Notes to offer, sell or otherwise transfer such Notes prior to the date that is one year after the later of the date of original issue and the last date on which the Issuers or any
affiliate of the Issuers was the owner of such Notes (or any predecessor thereto) (the “Resale Restriction Termination Date”) only (a) to CDW, (b) pursuant to a registration statement that has been declared effective under
the Securities Act, (c) in a transaction complying with the requirements of Rule 144A under the Securities Act (“Rule 144A”), to a person we reasonably believe is a qualified institutional buyer under Rule 144A (a
“QIB”) that is purchasing for its own account or for the account of a QIB and to whom notice is given that the transfer is being made in reliance on Rule 144A, (d) pursuant to offers and sales that occur outside the United
States within the meaning of Regulation S under the Securities Act, or (e) pursuant to any other available exemption from the registration requirements of the Securities Act, subject in each of the foregoing cases to any requirement of law that
the disposition of our property or the property of such investor account or 

  
 Exhibit C-1

 
accounts be at all times within our or their control and in compliance with any applicable state securities laws. The foregoing restrictions on resale will not apply subsequent to the Resale
Restriction Termination Date. Each purchaser acknowledges that the Issuers and the Trustee reserve the right prior to the offer, sale or other transfer prior to the Resale Restriction Termination Date of the Notes pursuant to clause (d) or
(e) above to require the delivery of an opinion of counsel, certifications or other information satisfactory to the Issuers and the Trustee. 
  

			
	TRANSFEREE:	 	                            
,
	
	by:
                                         
             

  
 Exhibit C-2

 EXHIBIT D 
 [FORM OF SUPPLEMENTAL INDENTURE 
 TO BE DELIVERED BY SUBSEQUENT GUARANTORS]

 SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”) dated as of , among [GUARANTOR] (the “New
Guarantor”), a subsidiary of CDW LLC (or its successor), an Illinois limited liability company and U.S. Bank National Association, as trustee (in such capacity, the “Trustee”). 

W I T N E S S E T H: 
 WHEREAS, the CDW Escrow Corporation (the “Issuer”) has heretofore executed and delivered to the Trustee an Indenture (the “Indenture”) dated as of April 13, 2011, as
supplemented by that certain Supplemental Indenture, dated as of April 13, 2011, by and among, CDW Escrow Corporation, CDW LLC, CDW Finance Corporation, the existing guarantors listed on Schedule I hereto (the “Existing Guarantors”)
and the Trustee, providing for the issuance of 8.5% Senior Notes due 2019 (the “Notes”) if and when issued as provided in the Registration Rights Agreement or otherwise registered under the Securities Act and issued, the
Issuers’ 8.5% Senior Notes due 2019 (the “Exchange Notes”) issued in the Registered Exchange Offer; 

WHEREAS, Sections 4.15 and 5.01 of the Indenture provide that under certain circumstances the Issuers are required to
cause the New Guarantor to execute and deliver to the Trustee a supplemental indenture pursuant to which the New Guarantor shall unconditionally guarantee all the Issuers’ obligations under the Notes pursuant to a Guarantee on the terms and
conditions set forth herein; and 
 WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee and the New
Guarantor are authorized to execute and deliver this Supplemental Indenture. 
 NOW THEREFORE, in consideration of the foregoing
and for other good and valuable consideration, the receipt of which is hereby acknowledged, the New Guarantor and the Trustee mutually covenant and agree for the equal and ratable benefit of the holders of the Notes as follows: 

1. Defined Terms. As used in this Supplemental Indenture, terms defined in the Indenture or in the preamble or recital hereto are
used herein as therein defined, except that the term “Holders” in this Supplemental Indenture shall refer to the term “Holders” as defined in the Indenture and the Trustee acting on behalf of and for the benefit of such Holders.
The words “herein,” “hereof” and hereby and other words of similar import used in this Supplemental Indenture refer to this Supplemental Indenture as a whole and not to any particular section hereof. 

2. Agreement to Guarantee. The New Guarantor hereby agrees, jointly and severally with all the Existing Guarantors, to
unconditionally guarantee the Issuers’ obligations under the Notes on the terms and subject to the conditions set forth in Article X of the Indenture and to be bound by all other applicable provisions of the Indenture and the Notes. 

3. Ratification of Indenture; Supplemental Indentures Part of Indenture. Except as expressly amended hereby, the Indenture is
in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of the Indenture for all purposes, and every holder of Notes heretofore
or hereafter authenticated and delivered shall be bound hereby. 

  
 Exhibit D-1

 4. Governing Law. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 
 5. Trustee Makes No Representation. The Trustee makes no
representation as to the validity or sufficiency of this Supplemental Indenture. 
 6. Counterparts. The parties may sign
any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement. 
 7. Effect of Headings. The Section headings herein are for convenience only and shall not affect the construction thereof. 

  
 Exhibit D-2

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed, all as of the date first above written. 
  

			
	[NEW GUARANTOR]
		
	By:	 	  

		 	Name:
		 	Title:
	
	 U.S. BANK NATIONAL ASSOCIATION,
 not in its individual capacity but solely as Trustee

		
	By:	 	  

		 	Name:
		 	Title:

  
 Exhibit D-3

 Schedule I to Supplemental Indenture 

Guarantors 

[            ] 

 
  

  
 Exhibit D-4

 EXHIBIT E 
 [FORM OF] 
 ASSUMPTION SUPPLEMENTAL INDENTURE 

SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of April 13, 2011, by and among CDW LLC, an
Illinois limited liability company (the “Company”), CDW Finance Corporation., a Delaware corporation (“FinanceCo” and together with the Company, the “Assuming Issuers”), CDW Corporation, a Delaware
corporation, and the subsidiaries of the Company party hereto (collectively, the “Guarantors”), CDW Escrow Corporation, a Delaware corporation (the “Escrow Issuer”), and U.S. Bank National Association, as trustee
(the “Trustee”), under the Indenture referred to below. 
 W I T N E S S E T H 

WHEREAS, the Escrow Issuer and the Trustee executed and delivered the indenture dated as of April 13, 2011 (the
“Indenture”), providing for the issuance of 8.5% Senior Notes due 2019 (the “Notes”); 

WHEREAS, Section 4.22 of the Indenture provides that the Escrow Issuer and the Assuming Issuers may execute and deliver to the
Trustee a supplemental indenture pursuant to which the Assuming Issuers shall unconditionally assume all of the Escrow Issuer’s Obligations under the Notes and the Indenture on the terms and conditions set forth herein; 

WHEREAS, Section 4.22 of the Indenture contemplates that under certain circumstances the Guarantors shall execute and deliver to the
Trustee a supplemental indenture pursuant to which the Guarantors shall unconditionally guarantee all the Assuming Issuers’ Obligations under the Notes and the Indenture pursuant to a Guarantee on the terms and conditions set forth herein and
in the Indenture; and 
 WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is authorized to execute and
deliver this Supplemental Indenture. 
 NOW, THEREFORE, in consideration of the foregoing and for other good and valuable
consideration, the receipt of which is hereby acknowledged, the Escrow Issuer, the Assuming Issuers, the Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows: 

1. CAPITALIZED TERMS. Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

 2. AGREEMENT TO ASSUME OBLIGATIONS. The Assuming Issuers hereby agree to unconditionally assume the Escrow Issuer’s
Obligations under the Notes and the Indenture on the terms and subject to the conditions set forth in the Indenture and to be bound by all other applicable provisions of the Indenture and the Notes and to perform all of the obligations and
agreements of the Escrow Issuer under the Indenture. 
 3. AGREEMENT TO GUARANTEE. The Guarantors hereby agree as follows:

 (a) The Guarantors hereby become parties to the Indenture as Guarantors and as such will have all of the
rights and be subject to all of the obligations and agreements of Guarantors under the Indenture. The Guarantors agree to be bound by all of the provisions of the Indenture applicable to Guarantors and to perform all of the obligations and
agreements of Guarantors under the Indenture. 

  
 Exhibit E-1

 (b) The Guarantors agree, on a joint and several basis, to fully,
unconditionally and irrevocably Guarantee to each Holder of the Notes and the Trustee the Obligations pursuant to Article X of the Indenture on a senior basis. 
 4. NO RECOURSE AGAINST OTHERS. No past, present or future director, officer, employee, incorporator, stockholder or agent of the Assuming Issuers or Guarantors, as such, shall have any liability for any
obligations of the Assuming Issuers or any Guarantors under the Notes, any Guarantees, the Indenture or this Supplemental Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of the
Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. Such waiver may not be effective to waive liabilities under the federal securities laws and it is the
view of the SEC that such a waiver is against public policy. 
 5. RELEASE OF OBLIGATIONS OF THE ESCROW ISSUER. Upon execution
of this Supplemental Indenture by the Assuming Issuers, the Escrow Issuer, the Guarantors and the Trustee, the Escrow Issuer is released and discharged from all obligations under the Notes and the Indenture. 

6. NEW YORK LAW TO GOVERN. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW
YORK. 
 7. COUNTERPARTS. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an
original, but all of them together represent the same agreement. 
 8. EFFECT OF HEADINGS. The Section headings herein are for
convenience only and shall not affect the construction hereof. 
 9. THE TRUSTEE. The Trustee shall not be responsible in any
manner whatsoever for or in respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Guaranteeing Subsidiary, the Escrow Issuer and the
Assuming Issuers. 

  
 E-2

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed and attested, all as of the date first above written. 
 Dated: April 13, 2011 

 

			
	CDW ESCROW CORPORATION
		
	By:	 	  

		 	Name:
		 	Title:
	
	CDW LLC
		
	By:	 	  

		 	Name:
		 	Title:
	
	CDW FINANCE CORPORATION
		
	By:	 	  

		 	Name:
		 	Title:
	
	[GUARANTORS]
		
	By:	 	  

		 	Name:
		 	Title:

  
 E-3

 
			
	 U.S. BANK NATIONAL ASSOCIATION,
 not in its individual capacity but solely as Trustee

		
	By:	 	  

		 	Name:
		 	Title:

  
 E-4Supplemental Indenture

 Exhibit 4.2 
 Execution Version 
 ASSUMPTION SUPPLEMENTAL INDENTURE 

SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of April 13, 2011, by and among CDW LLC, an
Illinois limited liability company (the “Company”), CDW Finance Corporation., a Delaware corporation (“FinanceCo” and together with the Company, the “Assuming Issuers”), CDW Corporation, a Delaware
corporation, and the subsidiaries of the Company party hereto (collectively, the “Guarantors”), CDW Escrow Corporation, a Delaware corporation (the “Escrow Issuer”), and U.S. Bank National Association, as trustee
(the “Trustee”), under the Indenture referred to below. 
 W I T N E S S E T H 

WHEREAS, the Escrow Issuer and the Trustee executed and delivered the indenture dated as of April 13, 2011 (the
“Indenture”), providing for the issuance of 8.5% Senior Notes due 2019 (the “Notes”); 

WHEREAS, Section 4.22 of the Indenture provides that the Escrow Issuer and the Assuming Issuers may execute and deliver to the
Trustee a supplemental indenture pursuant to which the Assuming Issuers shall unconditionally assume all of the Escrow Issuer’s Obligations under the Notes and the Indenture on the terms and conditions set forth herein; 

WHEREAS, Section 4.22 of the Indenture contemplates that under certain circumstances the Guarantors shall execute and deliver to the
Trustee a supplemental indenture pursuant to which the Guarantors shall unconditionally guarantee all the Assuming Issuers’ Obligations under the Notes and the Indenture pursuant to a Guarantee on the terms and conditions set forth herein and
in the Indenture; and 
 WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is authorized to execute and
deliver this Supplemental Indenture. 
 NOW, THEREFORE, in consideration of the foregoing and for other good and valuable
consideration, the receipt of which is hereby acknowledged, the Escrow Issuer, the Assuming Issuers, the Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows: 

1. CAPITALIZED TERMS. Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

 2. AGREEMENT TO ASSUME OBLIGATIONS. The Assuming Issuers hereby agree to unconditionally assume the Escrow Issuer’s
Obligations under the Notes and the Indenture on the terms and subject to the conditions set forth in the Indenture and to be bound by all other applicable provisions of the Indenture and the Notes and to perform all of the obligations and
agreements of the Escrow Issuer under the Indenture. 
 3. AGREEMENT TO GUARANTEE. The Guarantors hereby agree as follows:

 (a) The Guarantors hereby become parties to the Indenture as Guarantors and as such will have all of the
rights and be subject to all of the obligations and agreements of Guarantors under the Indenture. The Guarantors agree to be bound by all of the provisions of the Indenture applicable to Guarantors and to perform all of the obligations and
agreements of Guarantors under the Indenture. 

  
 1 

 (b) The Guarantors agree, on a joint and several basis, to fully,
unconditionally and irrevocably Guarantee to each Holder of the Notes and the Trustee the Obligations pursuant to Article X of the Indenture on a senior basis. 
 4. NO RECOURSE AGAINST OTHERS. No past, present or future director, officer, employee, incorporator, stockholder or agent of the Assuming Issuers or Guarantors, as such, shall have any liability for any
obligations of the Assuming Issuers or any Guarantors under the Notes, any Guarantees, the Indenture or this Supplemental Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of the
Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. Such waiver may not be effective to waive liabilities under the federal securities laws and it is the
view of the SEC that such a waiver is against public policy. 
 5. RELEASE OF OBLIGATIONS OF THE ESCROW ISSUER. Upon execution
of this Supplemental Indenture by the Assuming Issuers, the Escrow Issuer, the Guarantors and the Trustee, the Escrow Issuer is released and discharged from all obligations under the Notes and the Indenture. 

6. NEW YORK LAW TO GOVERN. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW
YORK. 
 7. COUNTERPARTS. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an
original, but all of them together represent the same agreement. 
 8. EFFECT OF HEADINGS. The Section headings herein are for
convenience only and shall not affect the construction hereof. 
 9. THE TRUSTEE. The Trustee shall not be responsible in any
manner whatsoever for or in respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Guaranteeing Subsidiary, the Escrow Issuer and the
Assuming Issuers. 

  
 2 

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed and attested, all as of the date first above written. 
 Dated: April 13, 2011 

 

					
	CDW ESCROW CORPORATION
		
	By:    	 	 /s/ Robert J. Welyki

		 	Name:    	 	Robert J. Welyki
		 	Title:    	 	Vice President and Treasurer
	
	CDW LLC
		
	By:	 	 /s/ Robert J. Welyki

		 	Name:    	 	Robert J. Welyki
		 	Title:    	 	Vice President and Treasurer
	
	CDW FINANCE CORPORATION
		
	By:	 	 /s/ Robert J. Welyki

		 	Name:    	 	Robert J. Welyki
		 	Title:    	 	Vice President and Treasurer
	
	CDW CORPORATION
		
	By:	 	 /s/ Robert J. Welyki

		 	Name:    	 	Robert J. Welyki
		 	Title:    	 	Vice President and Treasurer
	
	CDW TECHNOLOGIES, INC.
		
	By:	 	 /s/ Robert J. Welyki

		 	Name:    	 	Robert J. Welyki
		 	Title:    	 	Vice President and Treasurer
	
	CDW DIRECT, LLC
		
	By:	 	 /s/ Robert J. Welyki

		 	Name:    	 	Robert J. Welyki
		 	Title:    	 	Vice President and Treasurer

  
 3 

 
					
	CDW GOVERNMENT LLC
		
	By:    	 	 /s/ Robert J. Welyki

		 	Name:    	 	Robert J. Welyki
		 	Title:    	 	Vice President and Treasurer
	
	CDW LOGISTICS, INC.
		
	By:	 	 /s/ Robert J. Welyki

		 	Name:    	 	Robert J. Welyki
		 	Title:    	 	Vice President and Treasurer

  
 4 

 
					
	U.S. BANK NATIONAL ASSOCIATION,
	not in its individual capacity but solely as Trustee
		
	By:	 	 /s/ Raymond S. Haverstock

		 	Name:    	 	Raymond S. Haverstock
		 	Title:    	 	Vice President

  
 5

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00188-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00188-of-00352.parquet"}]]