Document:

SEC Exhibit

Exhibit 10.2

GUARANTY AND SURETYSHIP AGREEMENT
IN CONSIDERATION of credit granted or to be granted by PNC Bank, National Association ("PNC Bank") and various other financial institutions from time to time (PNC Bank and such other financial institutions are each a "Lender" and collectively, the "Lenders") pursuant to that certain Credit Agreement, dated of even date herewith (as may be amended, modified, supplemented or restated from time to time, the "Credit Agreement"), by and among Black Box Corporation, a Delaware corporation (the "Debtor"), the Guarantors (as defined in the Credit Agreement) party thereto from time to time, the Lenders (as defined in the Credit Agreement) party thereto from time to time, and PNC Bank, as administrative agent for the Lenders (PNC Bank, in such capacity, the "Administrative Agent"), intending to be legally bound hereby, and to induce the Lenders to maintain or extend credit to the Debtor, the entities listed on the signature page hereto and each other Person that, after the date hereof, joins hereunder as a Guarantor (such entities listed on the signature page hereto and each other Person that joins as a Guarantor hereunder are each, a "Guarantor" and collectively, the "Guarantors"), this 9th day of May, 2016, jointly and severally, hereby:

1.Become absolute and unconditional guarantors and sureties as though they were primary obligors to the Administrative Agent and the Lenders, their respective successors, endorsees and assigns, for (i) the prompt payment and performance when due (whether at maturity, by declaration, acceleration or otherwise) of all Obligations (as defined in the Credit Agreement) including, without limitation, all existing and future liabilities and obligations of the Debtor to the Administrative Agent and the Lenders under the Credit Agreement and the other Loan Documents, including, without limitation, all extensions, modifications, renewals thereof and substitutions therefor, whether absolute or contingent, direct or indirect, matured or unmatured, sole, joint or several, of any nature whatsoever, without regard to the validity, enforceability or regularity thereof including, without limitation, continuing interest thereon in accordance with the terms thereof and all reasonable expenses (including any reasonable legal expenses) incurred by the Administrative Agent or any Lender in enforcing any rights with regard to or collecting against any Guarantor under this Guaranty and Suretyship Agreement (this "Agreement") and (ii) the due and punctual performance of and/or compliance with all of the terms, conditions and covenants contained in each of the Credit Agreement, the Notes (as defined in the Credit Agreement) and the other Loan Documents (as defined in the Credit Agreement) to be performed or complied with by the Debtor and the accuracy of the Debtor's representations and warranties contained in each of the Loan Documents (all of the forgoing are hereinafter collectively referred to as the "Debtor Liabilities"), whether or not such Debtor Liabilities or any portion thereof shall hereafter be released or discharged or for any reason invalid or unenforceable (capitalized terms used in this Agreement that are defined in the Credit Agreement shall have the meanings assigned to them therein unless otherwise defined in this Agreement);
2.    Assent to all agreements made or to be made between the Administrative Agent or any Lender and any Loan Party and its subsidiaries liable, either absolutely or contingently, on any of the Debtor Liabilities, including any and all such agreements made by the Debtor and any co-maker, endorser, pledgor, surety or guarantor (any such Loan Party and its subsidiaries being hereinafter referred to as an "Obligor"), and further agree that the Guarantors' liability hereunder shall not be reduced or diminished by such agreements in any way;
3.    Consent and agree that the Guarantors' obligations and liabilities hereunder shall in no way be reduced, limited, waived or released if any other Person or Persons is presently or in the future becomes a surety or guarantor in regard to the Debtor Liabilities or any other liabilities among the Debtor, the Administrative Agent and the Lenders; and
4.    Consent that the Administrative Agent and the Lenders may, at their option, without in any way affecting the Guarantors' liability hereunder:  (i) exchange, surrender or release any or all collateral security or any endorsement, guaranty or surety held by the Administrative Agent or the Lenders for any of the Debtor Liabilities; (ii) renew, extend, modify, supplement, amend, release, alter or compromise the terms of any or all of the Debtor Liabilities; and (iii) waive or fail to perfect the Administrative Agent's and the Lenders' rights or remedies against the Debtor or the collateral security for any of the Debtor Liabilities.

    

CONTINUING GUARANTY.  This Agreement shall be a continuing one and shall continue in full force and effect until (subject to the terms and conditions of the Section of this Agreement entitled Bankruptcy of the Debtor) Payment In Full.  Without limiting the generality of the foregoing, each Guarantor hereby irrevocably waives any right to terminate or revoke this Agreement.
EXTENT OF GUARANTORS' LIABILITY.  This Agreement shall be and is intended to be an absolute and unconditional guaranty and suretyship, jointly and severally among the Guarantors, for the aggregate of the Debtor Liabilities including, but not limited to, the Indebtedness evidenced by the Notes.  The Administrative Agent may apply any payment received on account of the Debtor Liabilities in such order as the Administrative Agent, in its sole discretion, may elect in accordance with the Credit Agreement.  The obligations of the Guarantors under this Agreement, when construed collectively with the obligations of any other Guaranty and Suretyship Agreement made by any other Guarantor to the Administrative Agent (for its benefit and for the benefit of the Lenders) (collectively, jointly and severally, the "Other Guarantors"), are intended to be the joint and several obligations of the Guarantors and the Other Guarantors; and this Agreement, when construed in connection with such other Guaranty Agreements, is intended to be an absolute and unconditional guaranty and suretyship for the aggregate of the Debtor Liabilities subject to the limitation of each Guarantor's total liability hereunder set forth below.
Subject to the remainder of this paragraph, but otherwise notwithstanding anything to the contrary contained in this Agreement, the maximum liability of each Guarantor under this Agreement shall not exceed the sum of (i) that portion of the Debtor Liabilities, the proceeds of which are used by the Debtor to make Valuable Transfers (as hereinafter defined) to such Guarantor, plus (ii) ninety-five percent (95%) of the Adjusted Net Worth (as hereinafter defined), but only to the extent that Adjusted Net Worth is a positive number, of such Guarantor at the date of this Agreement.  For purposes of this paragraph:
"Adjusted Net Worth" shall mean, as of any date of determination thereof, the excess of (i) the amount of the fair saleable value of the assets of such Guarantor as of the date of such determination, determined in accordance with applicable federal and state laws governing determinations of insolvency of debtors, over (ii) the amount of all liabilities of such Guarantor, contingent or otherwise, as of the date of such determination, determined on the basis provided in the preceding clause (i), in all events prior to giving effect to Valuable Transfers.

"Valuable Transfers" shall mean the amount of the following:  (a) all loans, advances, other credit accommodations, or capital contributions made to such Guarantor with proceeds of the Loans, (b) the amount of Letters of Credit issued to support the obligations or Indebtedness of such Guarantor, (c) all debt securities or other obligations or Indebtedness of the Guarantor acquired from such Guarantor or retired, redeemed, purchased or acquired by such Guarantor with proceeds of any Loans or of any Letters of Credit issued to support the obligations or Indebtedness of such Guarantor, (d) all equity securities of such Guarantor acquired from such Guarantor with the proceeds of any Loans or of any drawings on Letters of Credit issued to support the obligations of such Guarantor, (e) the fair market value of all property acquired with proceeds of the Loans or of any drawings on Letters of Credit issued to support the obligations or Indebtedness of such Guarantor and transferred to such Guarantor, (f) the interest on and the fees in respect of the Loans, the proceeds of which are used to make such a Valuable Transfer, and (g) the value of any quantifiable economic benefits not included in clauses (a) through (f) above, but includable in accordance with applicable federal and state laws governing determinations of the insolvency of debtors, accruing to such Guarantor as a result of the Loans or the Letters of Credit.

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Each Guarantor agrees that the Debtor Liabilities may at any time and from time to time exceed the maximum liability of such Guarantor hereunder without impairing this Agreement or affecting the rights and remedies of Administrative Agent and Lenders hereunder.  No payment or payments made by the Debtor, any Guarantor or any other Person or received or collected by Administrative Agent or any Lender from the Debtor, any Guarantor or any other Person by virtue of any action or proceeding or any set-off or appropriation or application at any time or from time to time in reduction of or in payment of the Debtor Liabilities shall be deemed to modify, reduce, release or otherwise affect the liability of any Guarantor under this Agreement, and each Guarantor shall, notwithstanding any such payment or payments (other than payments made to Administrative Agent or any Lender by a Guarantor or payments received or collected by Administrative Agent or any Lender from a Guarantor), remain liable for the Debtor Liabilities up to the maximum liability amount of such Guarantor set forth in this paragraph until Payment In Full; provided, however, that, anything herein to the contrary notwithstanding, in no event shall any Guarantor's liability under this paragraph exceed the maximum amount that, after giving effect to the incurring of the obligations hereunder and to any rights to contribution of such Guarantor from the Debtor and other Affiliates of the Debtor, would not render Administrative Agent's and Lenders' right to payment hereunder void, voidable or avoidable under any applicable fraudulent transfer law; and further provided that if a greater amount of the Debtor Liabilities than the maximum liability set forth in this paragraph could be repaid by any Guarantor as a result of an increase in such Guarantor's Adjusted Net Worth subsequent to the date of this Agreement, without rendering Administrative Agent's and Lenders' right to payment hereunder void, voidable or avoidable under any applicable fraudulent transfer law, then the amount of such Guarantor's maximum liability calculated in the first sentence of this paragraph shall be calculated based upon such Guarantor's Adjusted Net Worth on such later date, rather than the date of execution of this Agreement.
UNCONDITIONAL LIABILITY.  The Guarantors' liability hereunder is absolute and unconditional and shall not be reduced, limited, waived, or released in any way by reason of:  (i) any failure of the Administrative Agent or any Lender to obtain, retain, preserve, perfect or enforce any rights against any Person (including without limitation, any Obligor) or in any property securing any or all of the Debtor Liabilities; (ii) the invalidity or irregularity of any such rights that the Administrative Agent and the Lenders may attempt to obtain; (iii) any delay in enforcing or any failure to enforce such rights, even if such rights are thereby lost; (iv) any delay in making demand on any Obligor for payment or performance of any or all of the Debtor Liabilities; or (v) from time to time, the payment in full and subsequent incurring of any Debtor Liabilities.  
WAIVER.  The Guarantors hereby waive all notice with respect to the present existence or future incurrence of any Debtor Liabilities including, but not limited to, the amount, terms and conditions thereof.  The Guarantors hereby consent to the taking of, or failure to take, from time to time, any action of any nature whatsoever permitted by Law with respect to the Debtor Liabilities and with respect to any rights against any Person or Persons (including, without limitation, any Obligor), or in any property including, without limitation, any renewals, extensions, modifications, postponements, compromises, indulgences, waivers, surrenders, exchanges and releases, and the Guarantors will remain fully liable hereunder notwithstanding any or all of the foregoing.  The granting of an express written release of any Guarantor's liability hereunder or any other Obligor's liability, in whole or in part, shall be effective only with respect to the liability such Guarantor or Obligor who is specifically so expressly released but shall in no way affect the liability hereunder of any Guarantor or any Obligor not so expressly released.  The dissolution of any Guarantor, or any other Obligor, shall in no way affect the liability hereunder or that of any other Obligor.  Each Guarantor hereby expressly waives:  (i) notices of acceptance hereof; (ii) any presentment, demand, protest, notice of default in connection with the Debtor Liabilities, dishonor or notice of dishonor; (iii) any right of indemnification; and (iv) any defense arising by reason of any disability or other defense whatsoever to the liability of the Debtor, or any other circumstance which might otherwise constitute a defense available to, or in discharge of, such Guarantor with respect to its obligations hereunder, excepting only full, strict, and indefeasible payment and performance of the Debtor Liabilities in full.

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No payment by any Guarantor shall entitle any other Obligor, by subrogation, contribution, indemnification or otherwise, to succeed to any of the rights of the Administrative Agent and the Lenders, including rights to any payment made on account of the Debtor Liabilities, regardless of the source of such payment, and no Guarantor shall have any right of subrogation, contribution, indemnification or other rights to be reimbursed, made whole or otherwise compensated by any other Obligor with respect to any payments made hereunder, until Payment In Full.  Each Guarantor hereby waives any benefit of and any right to participate in any collateral security now or hereafter held by the Administrative Agent and the Lenders or any failure or refusal by the Administrative Agent and the Lenders to perfect an interest in any collateral security.
BANKRUPTCY OF THE DEBTOR.  Neither the Guarantors' obligations to make payment in accordance with the terms of this Agreement nor any remedy for the enforcement hereof shall be impaired, modified, changed, released or limited in any manner whatsoever by the Debtor's bankruptcy or by any impairment, modification, change, release or limitation of (i) the liability of the Debtor, any Person assuming the obligations of the Debtor under the Credit Agreement or any of the other Loan Documents or the Debtor's estate in bankruptcy or (ii) any remedy for the enforcement of the Debtor Liabilities, either of which result from the operation of any present or future provision of any bankruptcy act, Law or equitable cause or from the decision of any court.  The Guarantors agree that to the extent that the Debtor or any other Obligor makes any payment or payments to the Administrative Agent or any Lender, which payment or payments or any part thereof are subsequently invalidated, declared to be fraudulent or preferential, set aside and/or required to be paid to a trustee, receiver or any other Person under any bankruptcy act, Law or equitable cause, then to the extent of such payment, the Debtor Liabilities or part thereof intended to be satisfied shall be revived and continued in full force and effect as if said payment had not been made.
PAYMENT OF COSTS.  In addition to all other liabilities of the Guarantors hereunder, the Guarantors also agree to pay to the Administrative Agent on demand all costs and expenses (including reasonable attorneys' fees and legal expenses) which may be incurred in the enforcement or collection of the liabilities of the Guarantors hereunder.
PRIMARY LIABILITY OF THE GUARANTORS.  The Guarantors agree that this Agreement may be enforced by the Administrative Agent and the Lenders without the necessity at any time of resorting to or exhausting any other security or collateral and without the necessity at any time of having recourse to the Loan Documents, or any collateral now or hereafter securing the Debtor Liabilities or otherwise, and each Guarantor hereby waives the right to require the Administrative Agent and the Lenders to proceed against any other Obligor or to require the Administrative Agent and the Lenders to pursue any other remedy or enforce any other right.  The Guarantors further agree that nothing contained herein shall prevent the Administrative Agent and the Lenders from suing on the Loan Documents, or any of them, or foreclosing their Lien, if any, on any collateral hereafter securing the Debtor Liabilities or from exercising any other rights available under the Loan Documents, or any other instrument of security if neither the Debtor nor the Guarantors timely perform the obligations of the Debtor thereunder, and the exercise of any of the aforesaid rights and the completion of any foreclosure proceedings shall not constitute a discharge of any of the obligations of the Guarantors thereunder; it being the purpose and intent of the Guarantors that the obligations of the Guarantors hereunder shall be absolute, independent and unconditional.  Neither the obligations of the Guarantors under this Agreement nor any remedy for the enforcement thereof shall be impaired, modified, changed or released in any manner whatsoever by an impairment, modification, change, release or limitation of the liability of the Debtor or by reason of the bankruptcy or insolvency of the Debtor.  If acceleration of the time for payment of any amount payable by the Debtor is stayed upon the insolvency or bankruptcy of the Debtor, amounts otherwise subject to acceleration under the terms of the Loan Documents including, without limitation, interest at the rates set forth in the Credit Agreement occurring after the date of such bankruptcy or insolvency, shall nonetheless be payable by the Guarantors hereunder forthwith on demand by the Administrative Agent.  The Guarantors acknowledge that the term "Debtor Liabilities" as used herein includes, without limitation, any payments made by the Debtor to the Administrative Agent or the Lenders and subsequently recovered by the Debtor or a trustee for the Debtor pursuant to bankruptcy or insolvency proceedings.

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ACCELERATION OF THE GUARANTORS' LIABILITIES.  Upon the occurrence and during the continuance of an Event of Default, all of the Debtor Liabilities, at the Administrative Agent's and the Lenders' option, shall be deemed to be forthwith due and payable in accordance with the Credit Agreement for the purposes of this Agreement and for determining the liability of the Guarantors hereunder, whether or not the Administrative Agent and the Lenders have any such rights against any other Obligor, and whether or not the Administrative Agent and the Lenders elect to exercise any rights or remedies against any other Person or property including, without limitation, any other Obligor.  
RIGHTS OF THE GUARANTORS.  All rights and remedies of the Guarantors against the Debtor or any property of the Debtor or any collateral security for any of the Debtor Liabilities, whether arising by promissory note, subrogation, security agreement, mortgage or otherwise, shall in all respects be and remain subordinate and junior in right of payment and priority to the prior Payment In Full to the Administrative Agent and the Lenders of all Debtor Liabilities and to the priority of the Administrative Agent and the Lenders in any property of the Debtor and any collateral security for any of the Debtor Liabilities.  Subject to the terms of the Intercompany Subordination Agreement, any amount which may have been paid to any Guarantor on account of any Indebtedness of the Debtor to any Guarantor, or on account of any subrogation or other rights of any Guarantor against the Debtor, when all of the Debtor Liabilities shall not have been Paid in Full, shall be held by the undersigned in trust for the benefit of the Lenders and shall forthwith be paid to the Administrative Agent to be credited and applied upon the Debtor Liabilities, whether matured or unmatured.
NOTICE TO THE ADMINISTRATIVE AGENT AND THE LENDERS BY THE GUARANTORS.  Any notice to the Administrative Agent or the Lenders by the Guarantors pursuant to the provisions hereof shall be sent, and shall be effective, in accordance with Section 10.5 [Notices; Effectiveness; Electronic Communication] of the Credit Agreement. Notice by the Guarantors shall not, in any way, reduce, diminish or release the liability of any other Obligor.  In the event that this Agreement is preceded or followed by any other guaranty or surety agreement(s) regarding the Debtor or any other Person, all rights granted to the Administrative Agent and the Lenders in such agreement(s) shall be deemed to be cumulative and this Agreement shall not, in such event, be deemed to be cancelled, superseded, terminated or in any way limited.
JOINDER.  Upon the execution and delivery by any other Person of a Guarantor Joinder, such Person shall become a "Guarantor" hereunder with the same force and effect as if it were originally a party to this Agreement and named as a "Guarantor" on the signature pages hereto, and such Guarantor Joinder shall constitute a rider hereto and form a part of this Agreement.  The execution and delivery of any such Guarantor Joinder shall not require the consent of any Guarantor or any Obligor, and the rights and obligations of each Guarantor hereunder shall remain in full force and effect notwithstanding the addition of any new Guarantor as a party to this Agreement.
MISCELLANEOUS.  This Agreement and the obligations of the Guarantors hereunder shall be binding upon the Guarantors and their respective successors, permitted assigns and other legal representatives, and shall inure to the benefit of the Administrative Agent and the Lenders and their respective endorsers, successors and assigns forever.  If any provision of this Agreement shall for any reason be held to be invalid or unenforceable, such invalidity or unenforceability shall not affect any other provision hereof, but this Agreement shall be construed as if such invalid or unenforceable provision had never been contained herein.  
This Agreement shall be deemed to be a contract under the Laws of the Commonwealth of Pennsylvania without regard to its conflict of laws principles.  

This Agreement may be executed in any number of counterparts and by the different parties hereto on separate counterparts each of which, when so executed, shall be deemed to be an original, but all such counterparts shall constitute but one and the same instrument.  Delivery of an executed counterpart of a signature page of this Agreement by telecopy or e‐mail shall be effective as delivery of a manually executed counterpart of this Agreement.

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WAIVER OF TRIAL BY JURY.  EACH OF THE UNDERSIGNED HEREBY EXPRESSLY, KNOWINGLY AND VOLUNTARILY WAIVES ALL BENEFIT AND ADVANTAGE OF ANY RIGHT TO A TRIAL BY JURY, AND IT WILL NOT AT ANY TIME INSIST UPON, OR PLEAD OR IN ANY MANNER WHATSOEVER CLAIM OR TAKE THE BENEFIT OR ADVANTAGE OF A TRIAL BY JURY IN ANY ACTION ARISING IN CONNECTION WITH THIS AGREEMENT OR ANY OF THE OTHER LOAN DOCUMENTS.

[INTENTIONALLY LEFT BLANK; SIGNATURE PAGES TO FOLLOW]

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IN WITNESS WHEREOF, the undersigned, intending to be legally bound hereby, executed and delivered this Agreement as a document under seal on the day and year first above written.
GUARANTORS:

ACS Communications, Inc., a Texas corporation 
ACS Dataline, LP, a Texas limited partnership
ACS Investors, LLC, a Delaware limited liability 
   company 
BB Technologies, Inc., a Delaware corporation
BBox Holding Company, a Delaware corporation
Black Box Corporation of Pennsylvania, a 
   Delaware corporation 
Black Box Network Services, Inc. – Government 
   Solutions, a Tennessee corporation
Black Box Services Company, a Delaware 
   corporation 
Delaney Telecom, Inc., a Pennsylvania corporation
InnerWireless, Inc., a Delaware corporation
Midwest Communications Technologies, Inc., an 
   Ohio corporation
Mutual Telecom Services Inc., a Delaware 
   corporation
NextiraOne, LLC, a Delaware limited liability 
   company 
NextiraOne Federal, LLC, a Delaware limited 
   liability company
Norstan, Inc., a Minnesota corporation
Norstan Communications, Inc., a Minnesota 
   corporation
Nu-Vision Technologies, LLC, a New York 
   limited liability company
Scottel Voice & Data, Inc., a California 
   corporation
Teldata Corporation, a Tennessee corporation
Vibes Technologies, Inc., a Minnesota corporation

By:  /s/ Timothy C. Huffmyer_____________(SEAL)
        Timothy C. Huffmyer, in his capacity as 
        one or more of the following:
        President, Vice President, CFO, Treasurer 
            and/or Secretary

- 7 -SEC Exhibit

Exhibit 10.3

PLEDGE AGREEMENT
This Pledge Agreement (this "Pledge Agreement"), dated the 9th day of May, 2016, is made by each of the entities listed on the signature page hereto, and each other Person that, after the date hereof, becomes bound hereby from time to time by joinder, assumption or otherwise (such entities listed on the signature page hereto and such other Persons are, individually a "Pledgor" and collectively the "Pledgors"), in favor of PNC Bank, National Association ("PNC"), as administrative agent for the Lenders (as hereinafter defined) (PNC, in such capacity, together with its successors and assigns, the "Administrative Agent").
W I T N E S S E T H:
WHEREAS, Black Box Corporation, a Delaware corporation, as borrower (the “Borrower”), the Guarantors (as defined therein) from time to time party thereto, PNC, and various other financial institutions from time to time party thereto (each, a "Lender" and collectively, the "Lenders") and Administrative Agent have entered into that certain Credit Agreement, dated of even date herewith (as may be amended, restated, modified and/or otherwise supplemented from time to time, the "Credit Agreement"), which is incorporated herein by reference thereto, pursuant to which the Borrower, the Guarantors, the Lenders and Administrative Agent agreed, among other things, that Lenders shall extend credit to the Borrower as set forth in the Credit Agreement; and
WHEREAS, Lenders have required, as a condition to their making the Loans pursuant to the Credit Agreement, that each Pledgor create a security interest in and pledge all of its issued and outstanding membership interests, limited liability company interests or shares of capital stock, as applicable, of the companies listed on Exhibit A attached hereto to Administrative Agent (for its benefit and for the benefit of Lenders) under the terms and conditions set forth herein; and
WHEREAS, in consideration of the Obligations, each Pledgor has agreed to create such a security interest and pledge all of its issued and outstanding partnership interests, membership interests, limited liability company interests or shares of capital stock, as applicable, of the companies listed on Exhibit A attached hereto to Administrative Agent (for its benefit and for the benefit of Lenders) under the terms and conditions set forth herein.
NOW, THEREFORE, in consideration of the premises and in order to induce Lenders to make the Loans pursuant to the Credit Agreement and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, each Pledgor hereby agrees with Administrative Agent as follows:
1.Defined Terms.  Unless otherwise defined herein, terms defined in the Credit Agreement shall have such defined meanings when used herein, and, for purposes of this Pledge Agreement, the rules of construction set forth in Section 1.2 of the Credit Agreement shall apply as if fully set forth herein, mutatis mutandis.

2.    Pledge.  As collateral security for the prompt and complete payment of all Obligations, each Pledgor hereby pledges to Administrative Agent (for its benefit and for the benefit of Lenders) its right, title and interest in and to all of the issued and outstanding capital stock, limited liability company interests, membership interests, partnership interests, other equity interests and any and all other investment property which such Pledgor now holds or hereafter acquires in the issuers as listed on Exhibit A attached hereto and made a part hereof (which Exhibit shall be and shall be deemed to be updated (i) upon the issuance by any such issuer of any additional capital stock, limited liability company interests, membership interests, partnership interests or equity interests now or hereinafter acquired and (ii) in accordance with Section 14) (the "Pledged Interests"), and hereby grants to Administrative Agent a Prior Security Interest on its right, title and interest in and to the Pledged Interests, the interest thereon and all products, proceeds, substitutions, additions, dividends and other distributions (subject to the terms of the Credit Agreement) in respect thereof, and all books, records, and papers relating to the foregoing (all of which are referred to herein as the "Collateral").  The membership interest certificates, limited liability company interest certificates, partnership interest certificates or capital stock certificates collectively representing all of the Pledged Interests now or hereinafter acquired, together with a transfer power in substantially the form of Exhibit B hereto with respect to each such membership interest certificate, limited liability company interest certificate, partnership interest certificate or capital stock certificate duly signed in blank by each Pledgor, as transferor, shall be delivered by each Pledgor to Administrative Agent (for its benefit and for the benefit of Lenders) contemporaneously with the execution of this Pledge Agreement and promptly following any acquisition of additional membership interests, limited liability company interests, partnership interests or shares of capital stock by each Pledgor that is represented by a new membership interest certificate, limited liability company interest certificate, partnership interest certificate or stock certificate. 

3.    Rights of Pledgors.  Prior to the occurrence of an Event of Default under the Credit Agreement, each Pledgor shall have all voting and other rights, powers, privileges and preferences pertaining to the Collateral, subject to the terms of this Pledge Agreement, and Administrative Agent (for its benefit and for the benefit of Lenders) shall not be entitled to any of such rights by reason of its possession of the Pledged Interests.
4.    Covenants of Pledgors.  Each Pledgor agrees that it will not (i) sell, assign (by operation of law or otherwise) transfer, exchange or otherwise dispose of, or grant any option with respect to, any of the Collateral, in each case except as provided for in the Credit Agreement, (ii) create or permit to exist any Lien or option upon or with respect to any of the Collateral, except for the Lien under this Pledge Agreement and Permitted Liens, (iii) file any affidavit for replacement of lost membership interest certificates, limited liability company interest certificates, partnership interest certificates or capital stock, if applicable or (iv) vote the Collateral in favor of or consent to any resolution which might result in any restrictions upon the sale, transfer or disposition of the Collateral.  Each Pledgor further agrees that it will take all actions necessary to cause the issuers listed on the Exhibits hereto not to issue any membership interests, limited liability company interests, partnership interests, capital stock or other securities in addition to or in substitution for the Collateral or exercise any right with respect to the Collateral which would materially and adversely affect Administrative Agent's rights in the Collateral.  Each Pledgor further agrees to execute all such instruments, documents, and papers, and will do all such acts as Administrative Agent may request from time to time to carry into effect the provisions and intent of this Pledge Agreement, including, without limitation, the execution of stop transfer orders, transfer powers and other instruments of assignment executed in blank, and will do all such other acts as Administrative Agent may request with respect to the perfection and protection of the Prior Security Interest granted herein and the assignment effected hereby.  Each Pledgor shall, in accordance with Section 10.15 of the Credit Agreement and Section 2 of this Pledge Agreement, deliver to Administrative Agent original membership interest certificates, limited liability company interest certificates, partnership interest certificates or stock certificates evidencing all of the Pledged Interests (and appropriate transfer powers duly signed in blank by Pledgor with respect thereto).  As of the time when the respective membership interests, limited liability company interests or partnership interests comprising the Pledged Interests are certificated, each Pledgor shall (i) have caused any membership interest, limited liability company interest or partnership interest comprising the Pledged Interests to become a "security" within the meaning of, and to be governed by, Article 8 of the Uniform Commercial Code as in effect in the jurisdiction of formation and each other applicable jurisdiction and (ii) deliver evidence to Administrative Agent, in form and substance reasonably satisfactory to Agent, of the completion of the actions required by clause (i) above. Once any Pledgor has established that a Pledged Interest is governed by Article 8, such Pledgor agrees that it shall not, and shall not permit any other 

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Person to cause such Pledged Interest to "opt-out" of Article 8 without the prior written consent of Administrative Agent.
5.    Release of Collateral.  Subject to any sale or other disposition by Administrative Agent of the Collateral in accordance with the terms under Section 7, upon the earlier of the Release Date or Payment In Full, this Pledge Agreement shall terminate and Administrative Agent shall promptly file, if applicable, UCC-3 financing statements to release the Liens granted hereunder and the certificates, transfer powers and any other Collateral in the possession of the Administrative Agent shall be promptly returned to each Pledgor.
6.    Rights of Administrative Agent.  If an Event of Default has occurred and is continuing, Administrative Agent may, without notice (except as required under the UCC), exercise all rights, privileges or options pertaining to any Collateral as if it were the absolute owner thereof, upon such terms and conditions as it may determine, all without liability except to account for property actually received by it and liability arising under the UCC and to the extent caused by gross negligence or willful misconduct of the Administrative Agent as determined by a final non-appealable judgment of a court of competent jurisdiction, but Administrative Agent shall have no duty to exercise any of the aforesaid rights, privileges or options and shall not be responsible for any failure to do so or delay in so doing.
7.    Remedies.  If an Event of Default has occurred and is continuing and Administrative Agent (for its benefit and for the benefit of Lenders), without demand of performance or other demand, advertisement or notice of any kind (except the notice specified below of time and place of public or private sale and notices required pursuant to the Credit Agreement, if any) to or upon each Pledgor or any other Person (all and each of which demands, advertisements and/or notices are hereby expressly waived), may forthwith collect, receive, appropriate and realize upon the Collateral, or any part thereof, and/or may forthwith sell, assign, give an option or options to purchase, contract to sell or otherwise dispose of and deliver said Collateral, or any part thereof, in one or more parcels at public or private sale or sales, at any exchange, broker's board or at any of Administrative Agent's offices or elsewhere upon such terms and conditions as it may deem advisable and at such prices as it may deem best, for cash or on credit or for future delivery without assumption of any credit risk, with the right of Administrative Agent upon any such sale or sales, public or private, to purchase the whole or any part of said Collateral so sold, free of any right of equity of redemption in each Pledgor, which right or equity is hereby expressly waived or released.  Administrative Agent shall apply the net proceeds of any such collection, recovery, receipt, appropriation, realization or sale, after deducting all costs and expenses of every kind incurred therein or incidental to the care, safekeeping or otherwise of any and all of the Collateral or in any way relating to the rights of Administrative Agent hereunder, including attorneys' fees and legal expenses, to the payment in whole or in part of the Obligations in such order as Administrative Agent may elect (subject to the terms of the Credit Agreement), each Pledgor remaining liable for any deficiency remaining unpaid after such application, and only after the application of such net proceeds and after the payment by Administrative Agent of any other amount required by any provision of law, need Administrative Agent account for the surplus, if any, to each Pledgor.  Each Pledgor agrees that Administrative Agent shall give at least ten (10) days’ notice of the time and place of any public sale or of the time after which a private sale or other intended disposition is to take place and that such notification is reasonable notification of such matters.  No notification need be given to the Pledgor if it has signed after default a statement renouncing or modifying any right to notification of sale or other intended disposition.  In addition to the rights and remedies granted to it in this Pledge Agreement and in any other instrument or agreement securing, evidencing or relating to any of the Obligations, Administrative Agent shall have all the rights and remedies of a secured party under the Uniform Commercial Code or other applicable laws.  Each Pledgor shall be liable for the deficiency if the proceeds of any sale or other disposition of the Collateral are insufficient to pay all amounts to which Administrative Agent and Lenders are entitled, and the reasonable fees and legal expenses of any attorneys employed by Administrative Agent to collect such deficiency.

3

8.    Representations, Warranties and Covenants of Pledgors.  Each Pledgor represents and warrants that:  (a) it has, and on the date of delivery to Administrative Agent of any Collateral, will have, good and marketable title to the Collateral and full power, authority and legal right to pledge all of its right, title and interest in and to the Collateral pursuant to this Pledge Agreement; (b) this Pledge Agreement has been duly executed and delivered by each Pledgor and constitutes a legal, valid and binding obligation of each Pledgor enforceable in accordance with its terms; (c) subject to any filings required by the rules and regulations promulgated by the SEC, no consent of any other party (including, without limitation, creditors of each Pledgor) and no consent, license, permit, approval or authorization of, exemption by, notice or report to or registration, filing or declaration with, any governmental authority, domestic or foreign, is required to be obtained by each Pledgor in connection with the execution, delivery or performance of this Pledge Agreement which has not been obtained; (d) the execution, delivery and performance of this Pledge Agreement will not violate any provision of any applicable law, or of the certificate/articles of incorporation, bylaws, certificate of formation/organization/limited partnership, limited liability company agreement, limited partnership agreement, any shareholders' agreement or any securityholders' agreement, as applicable, of each Pledgor or of any mortgage, indenture, lease, contract or other agreement, instrument or undertaking to which each Pledgor is a party or which purports to be binding upon each Pledgor or upon any of their respective assets and will not result in the creation or imposition of any Lien on any of the assets of each Pledgor except as contemplated by this Pledge Agreement or by the Credit Agreement or by any other Loan Document; (e) there are no restrictions on the transferability of the Collateral to Administrative Agent or with respect to the foreclosure and transfer thereof by Administrative Agent subject to and in accordance with the terms of the Credit Agreement and this Pledge Agreement, or, if there are any such restrictions, any and all restrictions on such transferability have been duly waived (to the extent permitted by law) with respect to this assignment, transfer, pledge, and grant of a security interest to Administrative Agent and with respect to the foreclosure and transfer thereof by Administrative Agent subject to and in accordance with the terms of the Credit Agreement and this Pledge Agreement; and (f) the pledge, assignment and delivery of such Collateral pursuant to this Pledge Agreement will create a Prior Security Interest in the Collateral subject only to Permitted Liens, and the proceeds thereof, subject to no prior Lien or to any agreement purporting to grant to any third party a Lien in the property or assets of each Pledgor which would include the Collateral.  The Collateral is fully paid and nonassessable.  Each Pledgor covenants and agrees that it will defend Administrative Agent's right, title and Lien on the Collateral and the proceeds thereof against the claims and demands of all Persons whomsoever; and covenants and agrees that it will have like title to and the right to pledge any other property at any time hereafter pledged to Administrative Agent as Collateral hereunder and will defend Administrative Agent's right thereto and Lien thereon.
9.    No Disposition, Etc.  Except as permitted under the Credit Agreement, each Pledgor agrees that it will not sell, assign, transfer, exchange or otherwise dispose of, or grant any option with respect to, the Collateral, nor will it create, incur or permit to exist any Lien with respect to any of the Collateral, or any interest therein, or any proceeds thereof, except for the Lien provided for by this Pledge Agreement and Permitted Liens.
10.    Sale of Collateral.  (a) Each Pledgor recognizes that Administrative Agent may be unable to effect a public sale of any or all of the Collateral by reason of certain prohibitions contained in the Securities Act of 1933, as amended, and applicable state and foreign securities laws, but may be compelled to resort to one or more private sales thereof to a restricted group of purchasers who will be obliged to agree, among other things, to acquire such securities for their own account for investment and not with a view to the distribution or resale thereof.  Each Pledgor acknowledges and agrees that any such private sale may result in prices and other terms less favorable to the seller than if such sale were a public sale and, notwithstanding such circumstances, agrees that such private sale shall be deemed to have been made in a commercially reasonable manner.  Administrative Agent shall be under no obligation to delay a sale of any of the Collateral for the period of time necessary to permit each Pledgor to register such securities for public sale under the Securities Act, or under applicable state and foreign securities laws, even if each Pledgor would agree to do so.

4

(b)    Each Pledgor further agrees to do or cause to be done all such other acts and things as may be necessary to make such sale or sale of any portion or all of the Collateral valid and binding and in compliance with any and all applicable laws of any Official Body having jurisdiction over any such sale or sales, all at each Pledgor's expense.  Each Pledgor further agrees that a breach of any of the covenants contained in this paragraph 10 will cause irreparable injury to Administrative Agent and Lenders, that Administrative Agent and Lenders have no adequate remedy at law in respect of such breach and, as a consequence, agrees that each and every covenant contained in this paragraph shall be specifically enforceable against each Pledgor and each Pledgor hereby waives and agrees not to assert any defenses against an action for specific performance of such covenants.
11.    Waivers by Pledgors; Subrogation.
(a)    Each Pledgor (i) waives presentment, demand, notice and protest with respect to the Collateral; (ii) waives any delay on the part of Administrative Agent without notice to or consent from each Pledgor; (iii) waives the right to notice and/or hearing prior to Administrative Agent's exercising of Administrative Agent's rights and remedies hereunder upon the occurrence of an event which would constitute a default hereunder or an Event of Default under the Credit Agreement; (iv) waives any right to require Administrative Agent to marshal the Collateral with other collateral which secures each Pledgor's obligations and any similar right to which each Pledgor is or may become entitled; and (v) waives any right of subrogation, reimbursement, contribution and any similar rights against issuer of any of the Pledged Interests until the Obligations are Paid In Full.
(b)    Administrative Agent shall have no duty as to the collection or protection of the Collateral or any income or distribution thereon, beyond the safe custody of such of the Collateral as may come into the possession of Administrative Agent and shall have no duty as to the preservation of rights against prior parties or any other rights pertaining thereto.  Administrative Agent's rights and remedies may be exercised without resort or regard to any other source of satisfaction of the Obligations.  In no event shall Administrative Agent have any liability to each Pledgor or otherwise hereunder except for liability arising out of the gross negligence or willful misconduct of Administrative Agent.
12.    Further Assurances.  Each Pledgor agrees that at any time and from time to time upon the written request of Administrative Agent, each Pledgor will execute and deliver such further documents and do such further acts and things as Administrative Agent may reasonably request in order to effect the purposes of this Pledge Agreement.
13.    Severability.  Any provision of this Pledge Agreement which is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction.
14.    Exhibit Updates and Joinder.  
(a)    To the extent following the date hereof, any Pledgor acquires capital stock, limited liability company interests, membership interests, partnership interests, other equity interests or other investment property in any other Subsidiary of the Pledgors (in each case, other than in Foreign Subsidiaries), such ownership interests shall, to the extent required pursuant to the terms of the Credit Agreement, be subject to the terms hereof and, upon such acquisition, shall be deemed to be Pledged Interests hereunder; and, such Pledgor thereupon shall deliver to Administrative Agent (i) all such certificates (and related transfer powers) evidencing any such additional Pledged Interests in accordance with Section 2, if any, and (ii) an updated Exhibit A.
(b)    Upon the execution and delivery by any other Person of a Guarantor Joinder (i) such Person shall become a "Pledgor" hereunder with the same force and effect as if it were originally a party to this Pledge Agreement and named as a "Pledgor" on the signature pages hereto and (ii) the Exhibits to this Pledge Agreement shall be deemed updated by the supplemental Exhibits to this Pledge Agreement delivered pursuant to the terms of such Guarantor Joinder.  The execution and delivery of any such Guarantor Joinder shall not require the consent of any other Pledgor hereunder, and the rights and obligations of each Pledgor hereunder shall remain in full force and effect notwithstanding the addition of any new Pledgor as a party to this Pledge Agreement.

5

15.    No Waiver; Cumulative Remedies.  Administrative Agent shall not, by any act, delay, omission or otherwise, be deemed to have waived any of its rights or remedies hereunder and no waiver shall be valid unless in writing, signed by Administrative Agent, and then only to the extent therein set forth.  A waiver by Administrative Agent of any right or remedy hereunder on any one occasion shall not be construed as a bar to any right or remedy which Administrative Agent would otherwise have on any future occasion.  No failure to exercise or any delay in exercising on the part of Administrative Agent, any right, power or privilege hereunder, shall operate as a waiver thereof; nor shall any single or partial exercise of any right, power or privilege hereunder preclude any other or further exercise thereof or the exercise of any other right, power or privilege.  The rights and remedies herein provided are cumulative and may be exercised singly or concurrently, and are not exclusive of any rights or remedies provided by law.
16.    Counterparts. Any number of counterparts of this Pledge Agreement may be executed by the parties hereto.  Each such counterpart shall be, and shall be deemed to be, an original instrument, but all such counterparts taken together shall constitute one and the same agreement.  Any signature delivered by a party by facsimile or electronic transmission (including email transmission of a PDF image) shall be deemed to be an original signature hereto.
17.    Binding Effect.  This Pledge Agreement and all obligations of each Pledgor hereunder shall be binding upon the successors and assigns of each Pledgor, and shall, together with the rights and remedies of Administrative Agent hereunder, inure to the benefit of Administrative Agent (for its benefit and for the benefit of Lenders) and its respective successors and permitted assigns.  This Pledge Agreement shall be governed by, and construed and interpreted in accordance with, the laws of the Commonwealth of Pennsylvania applied to contracts to be performed wholly within the Commonwealth of Pennsylvania.  The undersigned hereby agrees that any judicial proceeding by each Pledgor against Administrative Agent or any Lender involving, directly or indirectly, any matter or claim in any way arising out of, related to or connected with this Pledge Agreement or any related agreement, shall be brought only in a federal or state court located in the County of Allegheny, Commonwealth of Pennsylvania.
18.    EACH PARTY TO THIS PLEDGE AGREEMENT HEREBY EXPRESSLY WAIVES ANY RIGHT TO TRIAL BY JURY OF ANY CLAIM, DEMAND, ACTION OR CAUSE OF ACTION (A) ARISING UNDER THIS PLEDGE AGREEMENT OR ANY OTHER INSTRUMENT, DOCUMENT OR AGREEMENT EXECUTED OR DELIVERED IN CONNECTION HEREWITH, OR (B) IN ANY WAY CONNECTED WITH OR RELATED OR INCIDENTAL TO THE DEALINGS OF THE PARTIES HERETO OR ANY OF THEM WITH RESPECT TO THIS PLEDGE AGREEMENT OR ANY OTHER INSTRUMENT, DOCUMENT OR AGREEMENT EXECUTED OR DELIVERED IN CONNECTION HEREWITH, OR THE TRANSACTIONS RELATED HERETO OR THERETO IN EACH CASE WHETHER NOW EXISTING OR HEREAFTER ARISING, AND WHETHER SOUNDING IN CONTRACT OR TORT OR OTHERWISE AND EACH PARTY HEREBY CONSENTS THAT ANY SUCH CLAIM, DEMAND, ACTION OR CAUSE OF ACTION SHALL BE DECIDED BY COURT TRIAL WITHOUT A JURY, AND THAT ANY PARTY TO THIS PLEDGE AGREEMENT MAY FILE AN ORIGINAL COUNTERPART OR A COPY OF THIS SECTION WITH ANY COURT AS WRITTEN EVIDENCE OF THE CONSENTS OF THE PARTIES HERETO TO THE WAIVER OF THEIR RIGHT TO TRIAL BY JURY.
19.    Notices. All notices and other communications provided for herein shall be (i) in writing, (ii) delivered and deemed received in accordance with the procedures set forth in Section 10.5 of the Credit Agreement and (iii) addressed to the parties at the address, facsimile number or email address provided therein.  Any party hereto may change its address, facsimile number or email address for notices and other communications hereunder by notice to all of the other parties hereto in accordance with the foregoing.

6

20.    Power of Attorney Acknowledgment.  Each Pledgor acknowledges and agrees that (a) this Pledge Agreement contains one or more provisions authorizing the Administrative Agent or other Persons, as applicable (the Administrative Agent and such other Persons, acting in such capacity, are each an "Authorized Person"), to act as such Pledgor’s attorney-in-fact or agent (collectively the "Power of Attorney"); (b) the purpose of the Power of Attorney is to give each Authorized Person broad powers to take any action which any Authorized Person may deem necessary or advisable to accomplish the purposes hereof and otherwise act in the name of each Pledgor; (c) the Power of Attorney is coupled with an interest and, as such, any Authorized Person, in exercising any of its rights under the Power of Attorney is not a fiduciary of any Pledgor; (d) any Authorized Person may exercise any of its rights under the Power of Attorney for the sole benefit of such Authorized Person, without regard to the interests of any Pledgor; (e) the Power of Attorney shall in no way be construed as to benefit any Pledgor; (f) no Authorized Person shall have any duty to exercise any powers granted by the Power of Attorney for the benefit of any Pledgor or in any Pledgor’s best interest; (g) no Authorized Person shall have any duty of loyalty to any Pledgor; (g) each Authorized Person shall, to the extent exercisable, exercise any and all powers granted by the Power of Attorney solely for the benefit of such Authorized Person; (h) any rights any Pledgor may have under 20 Pa.C.S. §§ 5601 - 5612, as amended (the "POA Act") are hereby forever waived and relinquished; (i) without limiting the generality of the foregoing, (A) the Power of Attorney shall not be construed in accordance with the provisions of the POA Act, and (B) no Authorized Person shall have any of the duties described in 20 Pa.C.S. § 5601.3(b); (j) the Power of Attorney is irrevocable; and (k) each Pledgor has read and understands the Power of Attorney.

[INTENTIONALLY LEFT BLANK; SIGNATURE PAGES TO FOLLOW]

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IN WITNESS WHEREOF, and intending to be legally bound, each Pledgor has caused this Pledge Agreement to be duly executed and delivered on the day and year first written above as a document under seal.
PLEDGORS:
Black Box Corporation, a Delaware corporation
ACS Communications, Inc., a Texas corporation 
ACS Dataline, LP, a Texas limited partnership
ACS Investors, LLC, a Delaware limited liability 
   company 
BB Technologies, Inc., a Delaware corporation
BBox Holding Company, a Delaware corporation
Black Box Corporation of Pennsylvania, a 
   Delaware corporation 
Black Box Network Services, Inc. – Government 
   Solutions, a Tennessee corporation
Black Box Services Company, a Delaware 
   corporation 
Delaney Telecom, Inc., a Pennsylvania corporation
InnerWireless, Inc., a Delaware corporation
Midwest Communications Technologies, Inc., an 
   Ohio corporation
Mutual Telecom Services Inc., a Delaware 
   corporation
NextiraOne, LLC, a Delaware limited liability 
   company 
NextiraOne Federal, LLC, a Delaware limited 
   liability company
Norstan, Inc., a Minnesota corporation
Norstan Communications, Inc., a Minnesota 
   corporation
Nu-Vision Technologies, LLC, a New York 
   limited liability company
Scottel Voice & Data, Inc., a California 
   corporation
Teldata Corporation, a Tennessee corporation
Vibes Technologies, Inc., a Minnesota corporation

By:  /s/ Timothy C. Huffmyer___________(SEAL)
        Timothy C. Huffmyer, in his capacity as 
        one or more of the following:
        President, Vice President, CFO, Treasurer
        and/or Secretary

[Signature Page -Pledge Agreement (Black Box)]

8

ACKNOWLEDGMENT

COMMONWEALTH OF PENNSYLVANIA    )            )    SS: 
COUNTY OF ALLEGHENY            )
On this, the 6th day of May, 2016, before me, a Notary Public, personally appeared Timothy C. Huffmyer, who acknowledged himself to be an Authorized Officer of Black Box Corporation, a Delaware corporation, ACS Communications, Inc., a Texas corporation, ACS Dataline, LP, a Texas limited partnership, ACS Investors, LLC, a Delaware limited liability company, BB Technologies, Inc., a Delaware corporation, BBox Holding Company, a Delaware corporation, Black Box Corporation of Pennsylvania, a Delaware corporation, Black Box Network Services, Inc. – Government Solutions, a Tennessee corporation, Black Box Services Company, a Delaware corporation, Delaney Telecom, Inc., a Pennsylvania corporation, InnerWireless, Inc., a Delaware corporation, Midwest Communications Technologies, Inc., an Ohio corporation, Mutual Telecom Services Inc., a Delaware corporation, NextiraOne, LLC, a Delaware limited liability company, NextiraOne Federal, LLC, a Delaware limited liability company, Norstan, Inc., a Minnesota corporation, Norstan Communications, Inc., a Minnesota corporation, Nu-Vision Technologies, LLC, a New York limited liability company, Scottel Voice & Data, Inc., a California corporation, Teldata Corporation, a Tennessee corporation and Vibes Technologies, Inc., a Minnesota corporation (collectively, the "Loan Parties"), and that he, as such Authorized Officer of the Loan Parties, executed the foregoing instrument for the purposes therein contained by signing his name on behalf of the Loan Parties.

IN WITNESS WHEREOF, I hereunto set my hand and official seal.
/s/ Melissa Lamparski Bamonte________
Notary Public
My Commission Expires:
February 4, 2018

[Signature Page -Pledge Agreement (Black Box)]

9

EXHIBIT A

PLEDGED INTERESTS

	
					
	Pledgor
	Issuer
	Pledged Equity Description
	Percentage of Interests in Issuer
	Certificate No(s). (if applicable)

	Black Box Corporation
	BBox Holding Company
	Stock
	100%
	2

	Black Box Corporation
	ACS Communications, Inc.
	Stock
	100%
	1

	Black Box Corporation
	ADS Telecom, Inc.
	Stock
	100%
	8

	Black Box Corporation
	B & C Telephone, Inc.
	Stock
	100%
	5

	Black Box Corporation
	BBOX Holdings Puebla LLC
	LLC Interests
	100%
	N/A

	Black Box Corporation
	Black Box Services Company
	Stock
	100%
	1

	Black Box Corporation
	CBS Technologies Corp.
	Stock
	100%
	1

	Black Box Corporation
	Mutual Telecom Services Inc.
	Stock
	100%
	8

	Black Box Corporation
	Network Communications Technologies, Inc.
	Stock
	100%
	9

	Black Box Corporation
	Norstan, Inc.
	Stock
	100%
	1

	Black Box Corporation
	Scottel Voice & Data, Inc.
	Stock
	100%
	4

	Black Box Corporation of Pennsylvania
	BB Technologies, Inc.
	Stock
	100%
	3

	ACS Communications, Inc.
	ACS Dataline, LP
	Partnership Interest
	1%
(General Partner)
	N/A

	ACS Communications, Inc.
	ACS Dataline of the Northwest, Inc.
	Stock
	100%
	3

	ACS Communications, Inc.
	ACS Investors, LLC
	LLC Interests
	100%
	N/A

	Nu-Vision Technologies, LLC
	BCS II, LLC
	LLC Interests
	100%
	N/A

10

	
					
	BBox Holding Company
	Black Box Corporation of Pennsylvania
	Stock
	100%
	2

	BBox Holding Company
	Black Box Network Services, Inc. – Government Solutions
	Stock
	100%
	7

	BBox Holding Company
	Black Box Ventures Holding Company
	Stock
	100%
	1

	BBox Holding Company
	Delaney Telecom, Inc.
	Stock
	100%
	1

	BBox Holding Company
	InnerWireless, Inc.
	Stock
	100%
	IW-1

	BBox Holding Company
	LOGOS Communications Systems, Inc.
	Stock
	100%
	8

	BBox Holding Company
	Midwest Communications Technologies, Inc.
	Stock
	100%
	5

	BBox Holding Company
	Teldata Corporation
	Stock
	100%
	4

	Midwest Communications Technologies, Inc.
	Nu-Vision Technologies, LLC
	LLC Interests
	100%
	N/A

	Midwest Communications Technologies, Inc.
	PS Technologies, LLC
	LLC Interests
	100%
	N/A

	Midwest Communications Technologies, Inc.
	UCI Communications LLC
	LLC Interests
	100%
	N/A

	Norstan Communications, Inc.
	NextiraOne, LLC
	LLC Interests
	100%
	8 (Membership Interest Certificate)

	Norstan Communications, Inc.
	NextiraOne California L.P.
	Partnership Interests
	1.59%
(General Partner)
	N/A

	Norstan Communications, Inc.
	NextiraOne Federal, LLC
	LLC Interests
	100%
	6 (Membership Interest Certificate)

	Norstan Communications, Inc.
	NextiraOne New York, LLC
	LLC Interests
	100%
	5 (Membership Interest Certificate)

	Norstan Communications, Inc.
	Vibes Technologies, Inc.
	Stock
	100%
	2

11

	
					
	Norstan, Inc.
	Norstan Communications, Inc.
	Stock
	100%
	1

	NextiraOne Federal LLC
	Quanta Systems, LLC
	LLC Interests
	100%
	N/A

	NextiraOne, LLC
	NXO Installation, LLC
	LLC Interests
	100%
	1 (Membership Interest Certificate)

	NextiraOne, LLC
	NextiraOne California L.P.
	Partnership Interests
	98.41%
(Limited Partner)
	N/A

	ACS Investors, LLC
	ACS Dataline, LP
	Partnership Interest
	99%
(Limited Partner)
	N/A

12

EXHIBIT B
FORM OF TRANSFER POWER
FOR VALUE RECEIVED, [_________________],a [_________________] ("Company"), hereby sells, assigns and transfers unto ________________________________, ____ [membership interests/limited liability company interests/partnership interests/stock] of [_________________], a [_________________], standing in the name of Company on the books of said [limited liability company/limited partnership/general partnership/corporation] and represented by [Membership/Limited Liability Company/Partnership/Stock] Certificate No. __ and does hereby irrevocably constitute and appoint _________________________________ as its attorney-in-fact, to transfer said [membership interests/limited liability company interests/partnership interests/stock] on the books of said [limited liability company/limited partnership/general partnership/corporation] with full power of substitution in the premises.
	
		
	Dated: _____________ ___, ______
	[_________________]

By:                
Name:                
Title:                

13

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