Document:

<PAGE>

                                                                    EXHIBIT 10.1

                              TERMINATION AGREEMENT
                              ---------------------

THIS TERMINATION AGREEMENT (this "Agreement"), dated as of May 21, 2000, by and
between United Pan-Europe Communications N.V., a public limited liability
company (naamloze vennootschap) organised and existing under the laws of The
Netherlands ("UPC"), and SBS Broadcasting S.A., a public limited liability
corporation (societe anonyme) organized and existing under the laws of
Luxembourg ("SBS").

                                   WITNESSETH:

     WHEREAS, UPC and SBS have entered into that certain Exchange Offer
Agreement dated as of March 9, 2000, as amended by that certain letter agreement
between UPC and SBS, dated April 11, 2000 (such Exchange Offer Agreement, as
amended, referred to herein as the "Exchange Offer Agreement");

     WHEREAS, pursuant to Section 8.01(a) thereof the Exchange Offer Agreement
may be terminated at any time prior to the Closing Date by mutual consent of UPC
and SBS;

     WHEREAS, the Supervisory Board and the Board of Management of UPC and the
Board of Directors of SBS, respectively, have determined that it is advisable
and in the best interests of their respective shareholders to terminate the
Exchange Offer Agreement; and

     WHEREAS, UPC and SBS have mutually agreed to terminate the Exchange Offer
Agreement as provided herein,

     NOW THEREFORE, in consideration of the mutual covenants and agreements set
forth herein, the parties hereto agree as follows:

Section 1. UPC and SBS hereby mutually agree, with immediate effect as of the
date hereof, that the Exchange Offer Agreement is hereby terminated pursuant to
Section 8.01(a) of the Exchange Offer Agreement with the effect set forth in
Section 8.02 thereof, except that UPC and SBS hereby agree that Section 9.01 of
the Exchange Offer Agreement will be void and of no effect forthwith on the
signing of this Agreement. In addition, subject to Section 2, UPC and SBS hereby
waive all rights, obligations, claims or liabilities of any kind that they have
against each other relating or pertaining to the Exchange Offer Agreement or the
transactions contemplated thereby.

Section 2. Notwithstanding the terms of Section 1 above: (a) the last sentence
of Section 6.03 of the Exchange Offer Agreement will continue in full force and
effect; and (b) the Private Placement Agreement dated as of 27 January 2000 by
and between UPC, SBS, and UnitedGlobalCom, Inc. will remain in full force and
effect.

Section 3. In addition, UPC agrees that each of: (a) the non-solicitation
agreements entered into by letters dated 9 March 2000 sent to UPC from each of
H.E. Sloan, M Finkelstein, H.A. Knight and Martin Kindskog; (b) the Share
Exchange Agreements dated 9 March 2000 between UPC and each of H.E. Sloan, M.
Finkelstein, H.A. Knight and Martin Lindskog; and (c) any agreement between UPC
and any director of SBS whereby any such

                                  Page 5 of 9
<PAGE>

director agreed to resign as a director of SBS in connection with the Exchange
Offer Agreement will in the case of the Share Exchange Agreements terminate in
accordance with Section 9(ii) thereof and in the other cases will be void and of
no effect forthwith on the signing of this Agreement. UPC and SBS agree (and UPC
undertakes to ensure that UnitedGlobalCom, Inc. ("UGC") agrees) that the letter
agreement dated March 2000 sent by UPC to SBS and UGC amending the Private
Placement Agreement referred to in Section 2 above is void and of no effect
forthwith on the signing of this Agreement.

Section 4. As soon as reasonably possible after signature of this Agreement the
parties will take all reasonable steps to withdraw the Registration Statement
filed with the SEC.

Section 5. UPC and SBS hereby agree that prior to opening of the Amsterdam Stock
Exchange on 22 May 2000, they shall issue a joint press release substantially in
the form appended hereto.

Section 6. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF NEW YORK.

Section 7. This Agreement may be executed in counterparts, each of which shall
be deemed to be an original, but all of which, taken together, shall constitute
one and the same agreement.

Section 8. Capitalized terms used but not defined herein shall have the meanings
ascribed to them in the Exchange Offer Agreement.

IN WITNESS WHEREOF, each of the parties has caused this Agreement to be executed
on its behalf by its officers thereunto duly authorised, all at or on the day
and year first above written.

UNITED PAN-EUROPE COMMUNICATIONS N.V.

By:  /s/                                       By:  /s/
   -----------------------------                  -----------------------------
Name:   C. BRACKEN                             Name:   A. M. TUIJTEN
Title:  Chief Financial Officer                Title:  General Counsel

SBS BROADCASTING S.A.

By:  /s/                                       By:  /s/
   -----------------------------                  -----------------------------
Name:   H.A. McKNIGHT                          Name:   H.E. SLOANE
Title:  Vice Chairman                          Title:  Chairman<PAGE>

                                                                  Exhibit 10.1.1

                          SECOND AMENDED AND RESTATED
                          LOAN AND SECURITY AGREEMENT

                                  dated as of

                               October 22, 1999

                                    BETWEEN

                                PECO II, Inc.,
                                   Borrower

                                      AND

                         THE HUNTINGTON NATIONAL BANK,
                                    Lender

Porter, Wright, Morris & Arthur
41 South High Street
Columbus, Ohio 43215
<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<S>                                                                                          <C>
1.   THE LOANS...............................................................................  1

     1.1.    The Revolving Loan and Borrowing Base...........................................  1
     1.2.    The Term Loan...................................................................  1
     1.3.    The Capex Loan..................................................................  1
     1.4.    The Draw Loan...................................................................  1
     1.5.    Pending Defaults................................................................  2

2.   ELIGIBILITY.............................................................................  2

     2.1.    Eligible Accounts...............................................................  2
     2.2.    Eligible Inventory..............................................................  3
     2.3.    Reserves........................................................................  4

3.   TERMS AND USES OF LOANS.................................................................  4

     3.1.    Interest Rates and Fees.........................................................  4
     3.2.    Collateral Audits...............................................................  4
     3.3.    Prepayment Fee..................................................................  4
     3.4.    Terms of Repayment..............................................................  5
     3.5.    Mandatory Prepayment or Reduction...............................................  5
     3.6.    Maturity of Loans...............................................................  5
     3.7.    Use of Proceeds.................................................................  5
     3.8.    Amendment and Restatement.......................................................  6
     3.9.    Increased Capital...............................................................  7
     3.10.   Maximum Charges.................................................................  7
     3.11.   Mortgages on Real Property......................................................  7
     3.12.   Security Interest in Assets of Apex Telecommunications Manufacturing, Inc.......  8

4.   SECURITY AGREEMENT......................................................................  8

     4.1.    Grant of Security Interest......................................................  8
     4.2.    Representations and Covenants Regarding the Collateral..........................  9
     4.3.    Lockbox and Collection of Accounts.............................................. 10
     4.4.    Cash Collection Account......................................................... 10
     4.5.    Application of Proceeds from Collection of Accounts; Setoff; Government Accounts;
             Perfection; Lien Notation....................................................... 11
     4.6.    Collateral Insurance............................................................ 11
     4.7.    Books and Records............................................................... 12
     4.8.    Collateral Administration....................................................... 12
     4.9.    Preservation and Disposition of Collateral...................................... 13
     4.10.   No Duty......................................................................... 13
     4.11.   Financing Statements............................................................ 13
     4.12.   Bank's Appointment as Attorney-in-Fact.......................................... 14
     4.13.   Remedies on Default............................................................. 15

5.   CONDITIONS PRECEDENT.................................................................... 16

     5.1.    Conditions Precedent to Initial Advances Under the Loans........................ 16
     5.2.    Conditions Precedent to Subsequent Advances Under the Revolving Loan............ 16
     5.3.    Conditions Precedent to Advance Under the Draw Loan............................. 16

6.   WARRANTIES AND REPRESENTATIONS.......................................................... 17

     6.1.    Corporate Organization and Authority............................................ 17
     6.2.    Borrowing is Legal and Authorized............................................... 17
</TABLE>

                                      -i-
<PAGE>

<TABLE>
<S>                                                                                           <C>
     6.3.    Taxes...........................................................................  18
     6.4.    Compliance with Law.............................................................  18
     6.5.    Financial Statements; Full Disclosure...........................................  18
     6.6.    Litigation: Adverse Effects.....................................................  19
     6.7.    Solvency........................................................................  19
     6.8.    Government Consent..............................................................  19
     6.9.    Title to Properties.............................................................  20
     6.10.   No Defaults.....................................................................  20
     6.11.   Environmental Protection........................................................  20
     6.12.   Regarding the Accounts and Inventory............................................  21
     6.13.   Margin Loans....................................................................  21
     6.14.   Intellectual Property...........................................................  22

7.   BORROWER BUSINESS COVENANTS.............................................................  22

     7.1.    Payment of Taxes and Claims.....................................................  22
     7.2.    Maintenance of Properties and Corporate Existence...............................  22
     7.3.    Restriction on Fundamental Changes; Conduct of Business.........................  23
     7.4.    Sale of Assets..................................................................  23
     7.5.    Negative Pledge.................................................................  24
     7.6.    Indebtedness....................................................................  24
     7.7.    Contingent Obligations..........................................................  25
     7.8.    Loans and Advances, Investments.................................................  25
     7.9.    Management......................................................................  26
     7.10.   Acquisition of Capital Stock....................................................  26
     7.11.   Cash Dividends and Other Distributions..........................................  26
     7.12.   Transactions with Affiliates....................................................  26
     7.13.   Book Net Worth..................................................................  27
     7.14.   Leverage Ratio..................................................................  27
     7.15.   Current Ratio...................................................................  28
     7.16.   Capital Expenditures............................................................  28
     7.17.   Operating Lease Rentals.........................................................  28
     7.18.   Environmental Compliance and Indemnification....................................  28
     7.19.   Maintenance of Accounts.........................................................  29

8.   FINANCIAL INFORMATION AND REPORTING.....................................................  29

9.   DEFAULT.................................................................................  30

     9.1.    Events of Default...............................................................  30
     9.2.    Default Remedies................................................................  31

10.  MISCELLANEOUS...........................................................................  31

     10.1.   Notices.........................................................................  31
     10.2.   Access to Accountants...........................................................  32
     10.3.   Reproduction of Documents.......................................................  32
     10.4.   Costs and Expenses..............................................................  32
     10.5.   Survival, Successors and Assigns................................................  32
     10.6.   Amendment and Waiver, Duplicate Originals.......................................  33
     10.7.   Accounting Treatment and Fiscal Year............................................  33
     10.8.   Enforceability and Governing Law................................................  33
     10.9.   Confidentiality.................................................................  34
     10.10.  Waiver of Right to Trial by Jury................................................  34
     10.11.  Warrant of Attorney.............................................................  34
     10.12.  Advertising.....................................................................  35
</TABLE>

                                     -ii-
<PAGE>

<TABLE>
<S>                                                                                           <C>
     10.13.  No Consequential Damages........................................................  36
     10.14.  Indemnity.......................................................................  36

11.  DEFINITIONS.............................................................................  36

     11.1.   Uniform Commercial Code Terms...................................................  36
     11.2.   Accounting Terms................................................................  37
     11.3.   Other Definitional Provisions...................................................  37
</TABLE>

Exhibits and Schedules

          Exhibit A-1    Revolving Note
          Exhibit A-2    Term Note
          Exhibit A-3    Capex Note
          Exhibit A-4    Draw Note
          Exhibit B      Schedule of Permitted Encumbrances
          Exhibit C      Schedule of Business Locations
          Schedule 5.1   Conditions Precedent to Initial Disbursement
          Schedule 6.6   Schedule of Litigation and Pending or Threatened Claims
          Schedule 6.14  Schedule of Intellectual Property
          Schedule 7.7   Schedule of Contingent Obligations

                                     -iii-
<PAGE>

                          SECOND AMENDED AND RESTATED
                          ---------------------------
                          LOAN AND SECURITY AGREEMENT
                          ---------------------------

     This Second Amended and Restated Loan and Security Agreement (this
"Agreement") is entered into at Galion, Ohio, between The Huntington National
Bank, a national banking association (the "Bank") and PECO II, Inc., an Ohio
corporation (the "Borrower") as of the 22/nd/ day of October, 1999.

1.   The Loans

     The Bank, subject to the terms and conditions hereof, will extend credit to
the Borrower up to the aggregate principal sum of $21,215,000.00 (the "Loans").

1.1. The Revolving Loan and Borrowing Base.

     The Bank will extend a revolving credit facility to the Borrower under
which the Bank shall make, subject to the terms and conditions hereof, loans and
advances on a revolving basis up to the principal sum of $10,000,000.00 (the
"Revolving Loan").  The principal balance of the Revolving Loan at no time shall
exceed an amount equal to the sum of (i) up to 50% of Eligible Inventory; plus
(ii) up to 80% of Eligible Accounts (collectively the "Borrowing Base").  The
Bank, in its sole discretion, reserves the right upon notice to the Borrower to
increase or decrease the foregoing percentages or the maximum dollar amount
attributable to Eligible Inventory.

1.2. The Term Loan.

The Bank, subject to the terms and conditions hereof, will extend to the
Borrower a term loan facility up to the principal sum of $1,215,000.00 (the
"Term Loan").

1.3. The Capex Loan.

     The Bank, subject to the terms and conditions hereof, will extend to the
Borrower a term loan facility up to the principal sum of $5,000,000.00 (the
"Capex Loan").

1.4. The Draw Loan

     The Bank, subject to the terms and conditions hereof, will extend to the
Borrower a draw loan facility up to the principal sum of $5,000,000.00.  Subject
to the terms and conditions hereof and the additional limitations set forth
herein, no advances shall be made under the Draw Loan after April 29, 2001.
<PAGE>

1.5. Pending Defaults.

     The Bank shall have no obligation to advance or readvance any sums pursuant
to the Loans, at any time when a set of facts or circumstances exists that, by
itself, upon the giving of notice, the lapse of time, or any one or more of the
foregoing, would constitute an Event of Default under this Agreement (a "Pending
Default").

2.   Eligibility

2.1. Eligible Accounts.

     The term "Eligible Accounts" means the portion of the Borrower's accounts
arising in the ordinary course of the Borrower's business from the sale of goods
or services to an individual, partnership, corporation, limited liability
company or other entity (an "Account Debtor) that the Bank determines in its
sole discretion, based on credit policies, market conditions, the Borrower's
business and other criteria, is eligible.  An account shall not be deemed an
Eligible Account unless such account is subject to the Bank's perfected first
priority security interest and no other lien, encumbrance, or security interest,
is evidenced by an invoice or other documentary evidence satisfactory to the
Bank, is unconditionally due and payable in U.S. dollars to the Borrower from
the Account Debtor and conforms to the warranties regarding the accounts
contained in this Agreement. Without limiting the generality of the foregoing,
no account shall be an Eligible Account if:

     (a)  the account is due and payable more than 30 days after the date of the
original invoice therefor or is more than 60 days past-due;

     (b)  the account arises from uncompleted performance on the part of the
Borrower, constitutes a progress billing or advance billing, is a "bill and
hold," guaranteed sale, sale and return, or other repurchase or return basis,
or, if involving a sale of goods, all such goods have not been lawfully shipped
and invoiced to the Account Debtor, (or if requested by the Bank, copies of all
invoices, together with all shipping documents and delivery receipts evidencing
such shipment have not been delivered to the Bank);

     (c)  the Account Debtor is the United States of America, or any state, or
any department, agency, instrumentality or subdivision thereof;

     (d)  the account is subject to any dispute, prior assignment, claim, lien,
subrogation rights or security interest, or subject to any levy or setoff;

     (e)  the account is subject to any credit, contra account, allowance,
adjustment, return of goods, or discount or the Account Debtor is also the
Borrower's creditor or supplier (collectively a "Contra"), provided, however,
that unless the Account Debtor has asserted a

                                      -2-
<PAGE>

Contra, if the amount of the account exceeds the amount of the Contra, such
excess shall be considered for eligibility if such excess is not otherwise
excluded by this Section 2.1;

     (f)  the account arises from an Affiliate;

     (g)  the Account Debtor is subject to bankruptcy, receivership or similar
proceedings or is insolvent;

     (h)  the account is evidenced by any chattel paper, promissory note,
payment instrument or written agreement or arises from a consumer;

     (i)  the account arises from a sale to an Account Debtor outside the United
States or Canada (excluding Quebec), unless (A) the payment for such account is
assured by an irrevocable letter of credit, such letter of credit is from a
financial institution acceptable to the Bank, the same has been assigned to the
Bank and the original has been delivered to the Bank or the same has been
confirmed by a financial institution acceptable to the Bank and is in form and
substance acceptable to the Bank, payable in the full amount of the account in
United States dollars at a place of payment located within the United States, or
(B) the payment for such account is insured by foreign credit insurance
acceptable to the Bank, which has been collaterally assigned to the Bank in form
satisfactory to the Bank, and the Bank has been named beneficiary with respect
thereto;

     (j)  the account arises from an Account Debtor to whom goods are shipped on
a "cash on delivery" or C.O.D. basis;

     (k)  the account arises from an Account Debtor who has more than 50% of
its accounts in dollar value or in number of accounts with the Borrower more
than 60 days past due; or

     (l)  the Bank has notified the Borrower that the account or the Account
Debtor is unsatisfactory or unacceptable (which the Bank reserves the right to
do in its sole discretion at any time).

2.2. Eligible Inventory.

     The term "Eligible Inventory" means that portion of the Borrower's
inventory on which the Bank has a first and exclusive perfected security
interest and that the Bank determines in its sole discretion from time to time,
based on credit policies, market conditions, the Borrower's business and other
matters, is eligible for use in calculating the Borrowing Base.  For purposes of
determining the Borrowing Base, Eligible Inventory shall not include (a) work in
process, (b) slow-moving, obsolete or discontinued inventory, (c) supply items,
packaging, or the freight portion of raw materials, (d) inventory in the control
of a third person for processing, storage, or otherwise unless the Borrower
shall have obtained and delivered to the Bank, a bailee's waiver or secured
party of bailee's waiver, in form satisfactory to the Bank, the original
documents or other

                                      -3-
<PAGE>

instruments evidencing such inventory, or such other agreements or other
documents the Bank shall require in its sole and absolute discretion, (e)
consigned inventory, (f) inventory in transit, (g) inventory associated with any
contract of which the Borrower has knowledge that the same may be subject to
cancellation or a material adverse development, (h) inventory located outside
the United States or (i) inventory associated with any contract to the extent
that progress or advance payments are received from the Account Debtor such that
such inventory is identified to such contract. All inventory shall be valued at
the lesser of cost (on a FIFO basis) or market.

2.3. Reserves.

     The Bank reserves the right to deduct from any advances to be made
hereunder such amounts as the Bank may deem proper and necessary, in its sole
discretion, for the issuance of any letters of credit for the account of the
Borrower, to establish reserves for the creditworthiness of any Account Debtor,
price adjustments, returned inventory, slow moving inventory, market
fluctuations in the value of inventory, the payment of taxes or contingent
liabilities, customer advances and deposits, payment of interest, fees, and
expenses payable under this Agreement or any other agreement in favor of the
Bank, and such other purposes as the Bank may deem appropriate.

3.   Terms and Uses of Loans.

3.1. Interest Rates and Fees.

     The Borrower agrees to pay the Bank each month interest on the unpaid
balance of the Loans at the rates of interest set forth in the promissory note
or notes evidencing the Loans.

3.2. Collateral Audits.

     The Bank shall have the right, in the sole discretion of the Bank, to
conduct audits of the Borrower, and the Borrower will provide access to all of
its books and records and such other information which the Bank deems necessary
to evaluate the status of the Loans or of the Collateral.  In connection with
any audits performed after the occurrence, and during the continuance, of a
Pending Default, the Borrower will pay to the Bank a fee equal to $650.00 per
day per auditor, in addition to all out-of-pocket expenses of such auditors.
Such audit fees and expenses shall be payable by the Borrower upon demand.

3.3. Prepayment Fee.

     The Borrower shall have the option at all times to permanently cancel or
prepay the Revolving Loan, the Term Loan, the Capex Loan and the Draw Loan, in
whole, by providing to the Bank 60 days prior written notice of the effective
date and amount of such cancellation or prepayment, subject to the terms and
conditions of this paragraph.  The Borrower shall not cancel or prepay the
Revolving Loan without a simultaneous cancellation or prepayment of the Term
Loan, the Capex Loan and the Draw Loan.  In addition, on the effective date of
any such

                                      -4-
<PAGE>

cancellation and/or prepayment of any portion of the Loans prior to April 30,
2001, the Borrower shall pay to the Bank a cancellation/prepayment fee equal to
one percent (1%) of the sum of (a) the maximum principal balance of the
Revolving Loan to be cancelled or prepaid, plus (b) the actual outstanding
principal balance of the Term Loan to be cancelled or prepaid, plus (c) the
actual outstanding principal balance of the Capex Loan to be cancelled or
prepaid, plus (d) the maximum principal balance of the Draw Loan to be cancelled
or prepaid.

3.4. Terms of Repayment

     The Loans shall be evidenced by commercial promissory notes or by one or
more commercial promissory notes subsequently executed in substitution therefor,
each in substantially the form set forth in Exhibits A-1, A-2, A-3 and A-4
                                            ------------------------------
attached hereto.  Repayment of the Loans shall be made in accordance with the
terms of the commercial promissory notes then outstanding pursuant to this
Agreement.

3.5. Mandatory Prepayment or Reduction.

     If the Borrower fails to maintain, as minimum security for the Revolving
Loan, Eligible Inventory and Eligible Accounts having an aggregate value such
that the Borrowing Base will equal or exceed the aggregate unpaid principal
balance of the Revolving Loan, then the Borrower shall immediately pay to the
Bank the difference between the aggregate unpaid principal balance of the
Revolving Loan and the Borrowing Base.

3.6. Maturity of Loans

     If the Bank, in its sole and absolute discretion, determines not to renew
or extend the maturity of the Revolving Loan, then the Term Loan, the Capex Loan
and the Draw Loan shall be due and payable at the maturity of the Revolving
Loan.

3.7. Use of Proceeds

     The net proceeds of the Revolving Loan will be used to provide for working
capital requirements of the Borrower and for any other lawful business purpose
in the Borrower's business.  The net proceeds of the Term Loan were used to
finance the purchase of new equipment.  The net proceeds of the Capex Loan were
used to finance the acquisition of substantially all of the assets of EDA
Industries, Inc. and for other lawful business purposes in the Borrower's
business.  The net proceeds of the Draw Loan shall be used to finance the
purchase of machine tools to be used in the ordinary course of the Borrower's
business.

3.8. Amendment and Restatement.

     The indebtedness and obligations evidenced by this Agreement and all
instruments, agreements, and documents executed in connection herewith
constitute an amendment, renewal, and restatement (and not a novation) of all
indebtedness and obligations of the Borrower

                                      -5-
<PAGE>

evidenced by a certain Loan and Security Agreement between the Borrower and the
Bank dated December 21, 1988, together with all amendments and modifications
thereto from time to time (collectively, the "1988 Loan Agreement") and by a
certain Amended and Restated Loan and Security Agreement between the Borrower
and the Bank dated May 15, 1998, together with all amendments and modifications
thereto from time to time (collectively, the "1998 Loan Agreement") (the 1988
Loan Agreement and the 1998 Loan Agreement are hereinafter collectively referred
to us the "Existing Loan Agreement"), all promissory notes, instruments,
security agreements, collateral assignments, mortgages, deeds of trust, uniform
commercial code financing statements or equivalent perfection documents, and any
other document, agreement, waiver or other instrument executed in connection
therewith (collectively the "Existing Loan Documents") and shall remain in full
force and effect except to extent modified by this Agreement. All Uniform
Commercial Code financing statements, fixtures filings, and all security
agreements and/or collateral assignments executed and delivered to the Bank in
connection with the Existing Loan Agreement or the Existing Loan Documents shall
remain in full force and effect in all respects as if the indebtedness and
obligations secured and perfected with respect to such Uniform Commercial Code
financing statements, security agreements, mortgages, collateral assignments had
been payable originally as provided by this Agreement and by the instruments,
agreements and documents executed in connection herewith. The terms and
conditions of this Agreement and the Bank's rights and remedies hereunder, shall
apply to all of the obligations incurred under the Existing Loan Agreement and
the Existing Loan Documents. It is expressly understood and agreed by the
parties hereto that this Agreement is in no way intended to constitute a
novation of the obligations and liabilities existing under the Existing Loan
Agreement or evidence payment of all or any of such obligations and liabilities.
The Borrower reaffirms the security interest and liens granted to the Bank
pursuant to each of the Existing Loan Documents executed by the Borrower, which
security interests and liens shall continue in full force and effect during the
terms of this Agreement and any renewals thereof and shall continue to secure
the Obligations identified in such Existing Loan Documents. All references to
the Existing Loan Agreement in the Existing Loan Documents shall be deemed to
refer to this Agreement. If any inconsistency exists between this Agreement and
the Existing Loan Agreement, the terms of this Agreement shall prevail. Nothing
contained in this Agreement or in any security agreement, assignment, collateral
assignment, mortgage or other document or instrument executed contemporaneously
herewith shall be deemed to satisfy or discharge the indebtedness evidenced by
the Existing Loan Agreement or the Existing Loan Documents (this being an
amendment and restatement only) or terminate the security interests,
assignments, mortgages, financing statements, fixture filings, or other
documents or instruments previously executed and delivered granted to the Bank
prior to the date hereof.

3.9. Increased Capital.

     If after the date hereof the Bank determines that (i) the adoption or
implementation of or any change in or the interpretation or administration of
any law or regulation or any guideline or request from any central bank or other
governmental authority or quasi-governmental authority exercising jurisdiction,
power or control over the Bank or banks or financial institutions generally
(whether or not having the force of law), compliance with which affects or would

                                      -6-
<PAGE>

affect the amount of capital required or expected to be maintained by the Bank
or any corporation controlling the Bank and (ii) the amount of such capital is
increased by or based upon the making or maintenance by the Bank of any of the
Loans, any participation in or obligation to participate in the Loans or other
advances made hereunder or the existence of any obligation to make the Loans,
then, in any such case, upon written demand by the Bank, the Borrower shall
immediately pay to the Bank, from time to time as specified by the Bank,
additional amounts sufficient to compensate the Bank or such corporation
therefor.  Such demand shall be accompanied by a statement as to the amount of
such compensation and include a summary of the basis for such demand with
detailed calculations.  Such statement shall be conclusive and binding for all
purposes, absent manifest error.

3.10.  Maximum Charges.

       In no event whatsoever shall the interest rate and other charges
hereunder exceed the highest rate permissible under law which a court of
competent jurisdiction shall, in a final determination, deem applicable hereto.
In the event such a court determines that the Bank has received interest or
other charges hereunder in excess of the highest rate applicable thereto, the
Bank shall promptly refund such excess amount to the Borrower, and the
provisions hereof shall be deemed amended to provide for such permissible rate.

3.11.  Mortgages on Real Property.

       As additional security for the Loans, the Borrower shall grant to the
Bank mortgages and assignments of rent with respect to all real property of the
Borrower, whether now owned or hereafter acquired, the liens of which mortgages
and assignments of rent shall be subject only to the lien of unpaid real estate
taxes, the lien of a certain mortgage in favor of First Federal Savings and Loan
of Galion recorded at Volume 419, Page 05, Recorder's Office, Crawford County,
Ohio, and those liens and encumbrances to which the Bank shall give its consent
on or after this Agreement. Without limiting the generality of the foregoing,
the Borrower shall execute and deliver to the Bank (a) a certain Open-End
Mortgage, Assignments of Rents and Security Agreement - Fourth Amendment with
respect to its real property in Crawford County, Ohio, thereby modifying that
certain Open-End Mortgage, Assignment of Rents and Security Agreement in favor
of the Bank dated December 21, 1998, and recorded December 27, 1998 in Mortgage
Book 419, page 16, Recorder's Office, Crawford County, Ohio, and (b) a certain
Open-End Mortgage, Assignment of Rents and Security Agreement - Third
Modification Agreement with respect to its real property in Franklin County,
Ohio, thereby modifying that certain Open-End Mortgage and Security Agreement in
favor of the Bank, dated the 30th day of April, 1998, and recorded May 12, 1998,
as Instrument Number 199805120115378, Recorder's Office, Franklin County, Ohio.
The Borrower shall execute and deliver to the Bank such open-end mortgages,
assignments of rent and security agreements, UCC financing statements, mortgage
modification agreements and other documents and instruments as the Bank may deem
necessary in order to accomplish the foregoing.

3.12.  Security Interest in Assets of Apex Telecommunications Manufacturing,
Inc.

                                      -7-
<PAGE>

     As additional security for the Loans, Apex Telecommunications
Manufacturing, Inc., a wholly owned subsidiary of the Borrower, shall grant to
the Bank a hypothecation security interest in all of its personal property to
secure the prompt and full payment of the Obligations.

4.   Security Agreement

4.1. Grant of Security Interest.

     To secure the prompt payment and performance to the Bank of the
Obligations, the Borrower hereby grants, pledges, conveys and assigns to the
Bank continuing security interests in and lien upon the following property and
interests in property, whether the Borrower's interest therein be as owner, co-
owner, lessee, consignee, secured party or otherwise, and whether the same be
now owned or existing or hereafter arising or acquired, and wherever located,
together with all substitutions, replacements, additions and accessions therefor
or thereto, all documents, negotiable documents, documents of title, warehouse
receipts, storage receipts, dock receipts, dock warrants, express bills, freight
bills, airbills, bills of lading, and other documents relating thereto, all
products thereof and all cash and non-cash proceeds thereof including, but not
limited to, notes, drafts, checks, instruments, insurance proceeds, indemnity
proceeds, warranty and guaranty proceeds (herein the "Proceeds"): (a) all
inventory including, but not limited to, all goods, merchandise and other
personal property furnished under any contract of service or intended for sale
or lease, all parts, supplies, raw materials, work in process, finished goods,
materials used or consumed, and repossessed and returned goods (herein the
"Inventory"); (b) all accounts, accounts receivable, contract rights, chattel
paper, general intangibles, income or other tax refunds, proceeds of letters of
credit, preference recoveries and all claims in respect of any transfers of any
kind, instruments, negotiable documents, notes, drafts, acceptances and other
forms of obligations, all books, records, ledger cards, computer programs, and
other documents or property, including without limitation such items which are
evidencing or relating to the accounts and inventory and including, but not
limited to, any of the foregoing arising from or in connection with the sale,
lease or other disposition of Inventory (herein the "Accounts"); (c) all
machinery, equipment, tools, dies, molds, rolling stock, furniture, furnishings
and fixtures including, but not limited to, all manufacturing, fabricating,
processing, transporting and packaging equipment, power systems, heating,
cooling and ventilating systems, lighting and communications systems, electric,
gas and water distribution systems, food service systems, fire prevention, alarm
and security systems, laundry systems and computing and data processing systems
(herein the "Equipment"); (d) all trade names, trademarks, trade secrets,
service marks, data bases, software and software systems, including the source
and object codes, information systems, discs, tapes, customer lists, telephone
numbers, credit memoranda, goodwill, patents, patent applications, patents
pending, copyrights, royalties, literary rights, licenses and franchises (herein
the "Intellectual Property"); (e) all investment property, including without
limitation, securities, whether certificated or uncertificated, securities
entitlements, securities accounts, commodities contracts and commodities
accounts (herein the "Investment Property"); and (f) all deposit accounts,
whether general, special, time, demand, provisional, or final, all cash or
monies

                                      -8-
<PAGE>

wherever located, any and all deposits or other sums at any time due to
Borrower, any and all policies or certificates of insurance, goods, choses in
action, cash and property, which now or hereafter are at any time in the
possession or control of the Bank or in transit by mail or carrier to or from
the Bank, or in the possession of any third party acting in the Bank's behalf,
without regard to whether the Bank received the same in pledge for safekeeping,
as agent for collection or transmission or otherwise, or whether the Bank has
conditionally released the same (herein the "Deposits") (all of the Accounts,
the Inventory, the Equipment, the Intellectual Property, the Investment
Property, the Deposits and the Proceeds herein are collectively termed the
"Collateral").

     The security interests hereby granted are to secure the prompt and full
payment and complete performance of all Obligations to the Bank.  "Obligations"
means all loans, advances, indebtedness, debts, obligations, covenants, and
duties owing, arising, due or payable from the Borrower to the Bank of any kind
or nature, present or future, whether or not evidenced by any promissory note,
note, draft, letter of credit, guaranty , instrument or document , whether
arising under this Agreement or any of the other loan documents or otherwise and
whether direct or indirect (including any acquired by assignment), absolute or
contingent, primary or secondary, liquidated or unliquidated, due or to become
due, now existing and arising hereafter and however acquired or incurred,
(including principal, interest, late charges, collection costs, attorneys' fees
and other amounts chargeable to the Borrower under this Agreement or under any
other loan document), and any and all supplements, renewals of or substitutes
therefor.   The absence of any reference to this Agreement in any documents,
instruments or agreements evidencing or relating to any Obligation secured
hereby shall not limit or be construed to limit the scope or applicability of
this Agreement.

4.2. Representations and Covenants Regarding the Collateral.

     The Borrower represents and warrants that except for the security interests
granted hereby, any liens set forth in Exhibit B, and liens permitted by this
                                       ---------
Agreement, the Borrower is, or as to Collateral arising or to be acquired after
the date hereof, shall be, the sole and exclusive owner, lessee, or licensee, as
the case may be, of the Collateral, and the Collateral is and shall remain free
from any and all liens, security interests, encumbrances, claims and interests,
and no security agreement, financing statement, equivalent security or lien
instrument or continuation statement covering any of the Collateral is on file
or of record in any public office.  The Borrower shall not create, permit or
suffer to exist, shall take such action as is necessary to remove, any claim to
or interest in or lien or encumbrance upon the Collateral except the security
interest granted hereby and any liens or encumbrances set forth in Exhibit B,
                                                                   ---------
and shall defend the right, title and interest of the Bank in and to the
Collateral against all claims and demands of all persons and entities at any
time claiming the same or any interest therein.  The Borrower shall (a) maintain
its principal place of business and chief executive office at the address set
forth in paragraph 10.1 of this Agreement, and the records concerning the
Collateral shall be kept at that address unless the Bank shall give its prior
written consent otherwise; (b) keep the Collateral at the locations set forth in
Exhibit C attached hereto and maintain no other place of business or place where
---------
Collateral is located, except as shown in Exhibit C attached hereto; and (c)
                                          ---------
deliver to

                                      -9-
<PAGE>

the Bank at least thirty (30) days prior to the occurrence of any of the
following events, written notice of such impending events: (i) a change in the
principal place of business or chief executive office; (ii) the opening or
closing of any place of business; or (iii) a change in name, identity or
corporate structure.

4.3. Lockbox and Collection of Accounts.

     The Borrower shall cause all of its accounts to be collected through a
lockbox arrangement with the Bank and shall execute a lockbox agreement in form
and substance satisfactory to the Bank.  The Borrower shall notify all existing
Account Debtors to remit payments to the address specified in such lockbox
agreement, and all invoices rendered after the date hereof shall bear such
address.  The Bank at any time after the occurrence of a Pending Default may
notify Account Debtors on any Collateral that the Collateral has been assigned
to the Bank and shall be paid to the Bank through the lockbox or otherwise.
Upon request of the Bank at any time after the occurrence of a Pending Default,
the Borrower agrees to notify such Account Debtors and indicate on all billings
that the accounts are payable to the Bank.

4.4. Cash Collection Account.

     Upon the occurrence and during the continuance of a Pending Default, the
collections through the lockbox arrangement shall be deposited into a cash
collection account maintained with the Bank (the "Cash Collection Account"),
over which the Bank alone shall have the power of withdrawal. Upon the
occurrence and during the continuance of a Pending Default, if the Borrower
makes collections on any of the Collateral, it shall hold in trust for the Bank
the proceeds received from collections, and turn over all checks, drafts, cash
and other remittances and proceeds to the Bank each business day in the exact
form in which they are received, together with a collection report in form
acceptable to the Bank.  Said proceeds shall be deposited in the Cash Collection
Account.  The Bank in its discretion may apply the whole or any part of the
collected funds on deposit in the Cash Collection Account against the principal
or interest of the Loans or any other indebtedness or Obligations, and any
portion of said funds on deposit in the Cash Collection Account which the Bank
elects not to apply to the Obligations may be paid over and deposited by Bank to
the Borrower's commercial account.

4.5. Application of Proceeds from Collection of Accounts; Setoff; Government
Accounts; Perfection; Lien Notation.

     All amounts received by the Bank representing payment of Accounts or
proceeds from the sale of Inventory or of the Collateral may be applied by the
Bank to the payment of the Obligations in such order of preference as the Bank
may determine.  The Borrower also authorizes the Bank at any time, without
notice, to appropriate and apply any balances, credits, deposits, accounts or
money of the Borrower in the Bank's possession, custody or control to the
payment of any of the Obligations whether or not the Obligations are due or
matured.  If any of the Accounts arise out of contracts with or orders from the
United States or any department, agency or instrumentality thereof, the Borrower
shall immediately (i) notify the Bank thereof in

                                      -10-
<PAGE>

writing and (ii) execute any instrument and take any steps which the Bank deems
necessary pursuant to the Federal Assignment of Claims Act of 1940, as amended
(41 U.S.C. Section 15) in order that all money due and to become due under such
contract or order shall be assigned to the Bank. The Borrower agrees to execute,
deliver, file and record all such notices, affidavits, assignments, financing
statements and other instruments as shall in the judgment of the Bank be
necessary or desirable to evidence, validate and perfect the security interest
of the Bank in the Accounts. If certificates of title are issued or outstanding
with respect to any Inventory or Equipment, the Borrower will cause the interest
of the Bank to be properly noted thereon at the Borrower's expense.

4.6. Collateral Insurance.

     The Borrower shall have and maintain insurance at all times with respect to
all Inventory and Equipment insuring against risks of fire (including so-called
extended coverage), explosion, theft, sprinkler leakage and such other
casualties as the Bank may designate, containing such terms, in such form, for
such amounts, for such periods and written by such companies as may be
satisfactory to the Bank, and each such policy shall contain a clause or
endorsement satisfactory to the Bank that names the Bank as additional insured
and lender loss payee, as its interests may appear, that provides that no act,
default or breach of warranty or condition of the insured or any other person
shall affect the right of the Bank to recover under such policy or policies of
insurance or to pay any premium in whole or in part relating thereto, and that
provides for thirty (30) days' written minimum notice of cancellation or
alteration to the Bank.  The Borrower shall deliver to the Bank certified copies
of all policies of insurance and evidence of the payment of all premiums
therefor.  The Borrower hereby irrevocably appoints the Bank (and any of the
Bank's officers, employees or agents designated by the Bank) as attorney-in-fact
in obtaining and canceling such insurance and in making, settling and adjusting
all claims under such policies of insurance, endorsing any check, draft,
instrument or other item of payment for the proceeds of such policies of
insurance and for making all determinations and decisions with respect to such
policies of insurance; provided, however, that the Bank shall not exercise the
power of attorney granted by this section until and unless (a) an Event of
Default shall have occurred or (b) an event of loss shall have occurred and the
Bank in good faith deems that the Borrower is not diligently pursuing its
claims.  In the event of failure to provide insurance as herein provided, the
Bank may, at its option, provide such insurance, and the Borrower shall pay to
the Bank, upon demand, the cost thereof.  Should said sum not be paid to the
Bank upon demand, interest shall accrue thereon from the date of demand until
paid in full at the highest rate set forth in any document or instrument
evidencing any of the Obligations.

4.7. Books and Records.

     The Borrower shall (a) at all times keep accurate and complete records of
the Collateral in accordance with GAAP, including without limitation, a
perpetual inventory and complete and accurate stock records, and at all
reasonable times and from time to time, shall allow the Bank, by or through any
of its officers, agents, attorneys or accountants, to examine, inspect and make
extracts from such books and records and to arrange for verification of the
Collateral directly

                                      -11-
<PAGE>

with Account Debtors or by other methods and to examine and inspect the
Collateral wherever located, and (b) upon request of the Bank, provide the Bank
with copies of agreements with, purchase orders from, and invoices to, the
Account Debtors, and copies of all shipping documents, delivery receipts, and
such other documentation and information relating to the Collateral as the Bank
may require.

4.8. Collateral Administration.

     The Borrower (a) shall promptly perform, on request of the Bank, such acts
as the Bank may determine to be necessary or advisable to create, perfect,
maintain, preserve, protect and continue the perfection of any lien and security
interest provided for in this Agreement or otherwise to carry out the intent of
this Agreement, including, without limitation, (i) obtaining waivers or other
similar documents reasonably necessary to permit the enforcement of the remedies
of the Bank hereunder, (ii) delivering to the Bank warehouse receipts covering
any portion of the Inventory located in warehouses and for which warehouse
receipts are issued, (iii) transferring Inventory to warehouses designated by
the Bank or leasing warehouses containing the Inventory to the Bank or its
designee, (iv) delivering to the Bank copies, and originals upon the Bank's
request, of all letters of credit on which the Borrower is named beneficiary,
and (v) if any Inventory is at any time in the possession or control of a
warehouseman, bailee or any agent, notifying such person of the Bank's lien and
security interest in the Collateral and, upon the Bank's request, instructing
such persons to hold all Collateral for the Bank's account subject to the Bank's
instruction; (b) shall not (i) extend, amend or otherwise modify the terms of
any Account, (ii) amend, modify or waive any term or condition of any
contractual obligation related thereto or (iii) redate any invoice or sale or
make sales on extended dating beyond that customary in the Borrower's industry;
provided, however, that the Borrower may extend, amend or otherwise modify the
terms of any Account in the ordinary course of business, if such extension,
amendment, modification or waiver does not cause an Account to become or
otherwise remain (but for such action) an Eligible Account; and (c) if there are
any disputes with any of the Accounts, will notify the Bank promptly and resolve
or settle such dispute at no expense or detriment to the Bank.

4.9. Preservation and Disposition of Collateral.

     The Borrower shall (a) obtain, prior to the placement of any Collateral in
or upon any leased or mortgaged real property, a waiver from the lessor and/or
the mortgagee, as the case may be, with respect to the rights (whether present
or future) of the lessor or mortgagee with respect to that Collateral; (b)
advise the Bank promptly, in writing and in reasonable detail, (i) of any
material encumbrance or claim asserted against any of the Collateral; (ii) of
any material change in the composition of the Collateral; and (iii) of the
occurrence of any other event that would have a material adverse effect upon the
aggregate value of the Collateral or upon the security interest of the Bank; (c)
not sell or otherwise dispose of the Collateral, except for the Inventory as
otherwise permitted by this Agreement; (d) keep the Collateral in good condition
and shall not misuse, abuse, secrete, waste or destroy any of the same; and (e)
not use the Collateral in violation of any statute, ordinance, regulation, rule,
decree or order.  At its option,

                                      -12-
<PAGE>

the Bank may discharge taxes, liens, security interests or other encumbrances at
any time levied or placed on the Collateral and may pay for the maintenance and
preservation of the Collateral. The Borrower agrees to reimburse the Bank upon
demand for any payment made or any expense incurred (including reasonable
attorneys' fees) by the Bank pursuant to the foregoing authorization. Should
said sum not be paid to the Bank upon demand, interest shall accrue thereon,
from the date of demand until paid in full, at the highest rate set forth in any
document or instrument evidencing any of the Obligations.

4.10.  No Duty.

       The Bank shall have no duty as to the collection or protection of
Collateral or any income therefrom, nor as to the preservation of rights against
prior parties, nor as to the preservation of any right pertaining thereto,
beyond the safe custody of any Collateral in the possession of the Bank.

4.11.  Financing Statements.

       At the request of the Bank, the Borrower shall join with the Bank in
executing, delivering and filing one or more financing statements in a form
satisfactory to the Bank and shall pay the cost of filing the same in all public
offices wherever filing is deemed by the Bank to be necessary or desirable.  In
addition, the Borrower hereby authorizes the Bank to file financing statements
without the Borrower's signature that contain (a) a description of the
Collateral, or (b) the following collateral description:  "All of Borrower's
assets now owned or hereafter acquired" or such lesser amount of assets as the
Bank may determine.  A carbon, photographic or other reproduction of this
Agreement or of a financing statement shall be sufficient as a financing
statement.

                                      -13-
<PAGE>

4.12.  Bank's Appointment as Attorney-in-Fact.

       The Borrower hereby irrevocably constitutes and appoints the Bank and any
officer or agent thereof, with full power of substitution, as the Borrower's
true and lawful attorney-in-fact with full irrevocable power and authority in
its place and stead and in its name or in the Bank's own name, from time to time
in the Bank's discretion, for the purpose of carrying out the terms of this
Agreement, to take any and all appropriate action and to execute any and all
documents and instruments that may be necessary or desirable to accomplish the
purposes of this Agreement and, without limiting the generality of the
foregoing, hereby grants to the Bank the power and right, on behalf of the
Borrower, without notice to or assent: (a) to execute, file and record all such
financing statements, certificates of title and other certificates of
registration and operation and similar documents and instruments as the Bank may
deem necessary or desirable to protect, perfect and validate the Bank's security
interest in the Collateral; (b) to receive, collect, take, indorse, sign, and
deliver in the Borrower's or the Bank's name, any and all checks, notes, drafts,
or other documents or instruments relating to the Collateral; and (c) upon the
occurrence of an Event of Default, (i) to notify postal authorities to change
the address for delivery of the Borrower's mail to an address designated by the
Bank, (ii) to open such mail delivered to the designated address, (iii) to sign
and indorse any invoices, freight or express bills, bills of lading, storage or
warehouse receipts, drafts against debtors, assignments, verifications and
notices in connection with accounts and other documents relating to the
Collateral; (iv) to commence and prosecute any suits, actions or proceedings at
law or in equity in any court of competent jurisdiction to collect the
Collateral or any part thereof and to enforce any other right in respect of any
Collateral; (v) to defend any suit, action or proceeding brought with respect to
any Collateral; (vi) to negotiate, settle, compromise or adjust any account,
suit, action or proceeding described above and, in connection therewith, to give
such discharges or releases as the Bank may deem appropriate; and (vii)
generally, to sell, transfer, pledge, make any agreement with respect to or
otherwise deal with any of the Collateral as fully and completely as though the
Bank were the absolute owner thereof for all purposes, and to do, at the Bank's
option, at any time or from time to time, all acts and things which the Bank
deems necessary to protect, preserve or realize upon the Collateral and the
Bank's security interest therein, in order to effect the intent of this
Agreement.

       The Borrower hereby ratifies all that said attorneys shall lawfully do
or cause to be done by virtue hereof. This power of attorney is a power coupled
with an interest and shall be irrevocable. The powers conferred upon the Bank
hereunder are solely to protect its interests in the Collateral and shall not
impose any duty upon the Bank to exercise any such powers. The Bank shall be
accountable only for amounts that the Bank actually receives as a result of the
exercise of such powers and neither the Bank nor any of its officers, directors,
employees or agents shall be responsible to the Borrower for any act or failure
to act, except for the Bank's own gross negligence or willful misconduct, as
determined by a final non-appealable judgment by a court of competent
jurisdiction.

                                      -14-
<PAGE>

4.13.  Remedies on Default.

       Upon the occurrence of an Event of Default, the Bank shall have the
rights and remedies of a secured party under this Agreement, under any other
instrument or agreement securing, evidencing or relating to the Obligations and
under the laws of the State of Ohio or any other applicable state law. Without
limiting the generality of the foregoing, the Bank shall have the right to take
possession of the Collateral and all books and records relating to the
Collateral and for that purpose the Bank may enter upon any premises on which
the Collateral or books and records relating to the Collateral or any part
thereof may be situated and remove the same therefrom. Except for the notices
specified below of time and place of public sale or disposition or time after
which a private sale or disposition is to occur, the Borrower expressly agrees
that the Bank, without demand of performance or other demand, advertisement or
notice of any kind to or upon the Borrower or any other person or entity (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, lease, assign, give
option or options to purchase or sell or otherwise dispose of and deliver the
Collateral (or contract to do so), or any part thereof, in one or more parcels
at public or private sale or sales, at any of the Bank's offices or elsewhere at
such prices as the Bank may deem best, for cash or on credit or for future
delivery without assumption of any credit risk. The Bank shall have the right
upon any such public sale or sales, and, to the extent permitted by law, upon
any such private sale or sales, to purchase the whole or any part of the
Collateral so sold, free of any right or equity of redemption. The Borrower
further agrees, (a) at the Bank's request, to assemble the Collateral and to
make it available to the Bank at such places as the Bank may reasonably select
and (b) to allow the Bank to use or occupy the Borrower's premises, without
charge, for the purpose of effecting the Bank's remedies in respect of the
Collateral. The Bank shall apply the net proceeds of any such collection,
recovery, receipt, appropriation, realization or sale, after deducting all
reasonable costs and expenses of every kind incurred in connection therewith or
incidental to the care or safekeeping of any or all of the Collateral or in any
way relating to the rights of the Bank hereunder, including reasonable
attorneys' fees and legal expenses, to the payment in whole or in part of the
Obligations, in such order as the Bank may elect, and only after so paying over
such net proceeds and after the payment by the Bank of any other amount required
by any provision of law, need the Bank account for the surplus, if any. To the
extent permitted by applicable law, the Borrower waives all claims, damages and
demands against the Bank arising out of the repossession, retention, sale or
disposition of the Collateral and agrees that the Bank need not give more than
10 days' notice pursuant to the terms of this Agreement of the time and place of
any public sale or of the time after which a private sale may take place and
that such notice is reasonable notification of such matters. The Borrower shall
remain liable for any deficiency if the proceeds of any sale or disposition of
the Collateral are insufficient to pay all amounts to which the Bank is entitled
and shall also be liable for the costs of collecting any of the Obligations or
otherwise enforcing the terms thereof or of this Agreement, including reasonable
attorneys' fees.

                                      -15-
<PAGE>

5.     Conditions Precedent

5.1.   Conditions Precedent to Initial Advances Under the Loans.

       This Agreement shall become effective, and the Bank shall be obligated to
make the initial advances hereunder only after the Bank shall have received from
the Borrower each of following items in form and substance satisfactory to the
Bank:  this Agreement, the promissory notes and other agreements, documents and
instruments described in Schedule 5.1 attached hereto, each duly executed where
                         ------------
appropriate and in form and substance satisfactory to the Bank; and the
fulfillment of all the conditions described thereon and the delivery of such
additional documentation as the Bank may reasonably request.

5.2.   Conditions Precedent to Subsequent Advances Under the Revolving Loan.

       The Bank shall not be required to make any disbursement or advance under
the Revolving Loan subsequent to the initial disbursement or initial advance,
unless on the applicable date that each such advance is to be made:

       (a)  Warranties and Representations. The warranties and representations
            ------------------------------
set forth in Section 6 hereof and each of the representations and warranties
contained in any certificate, document or financial or other statement furnished
at any time pursuant to this Agreement or any related document shall be true and
correct on and as of such date with the same effect as though such warranty or
representation had been made on and as of such date, except to the extent that
such warranty or representation is stated to expressly relate solely to an
earlier date; and

       (b)  Compliance. The Borrower shall have complied and shall then be in
            ----------
compliance with all the terms, covenants and conditions of this Agreement which
are binding upon it, and no Event of Default or Pending Default shall have
occurred and be continuing on such date or after giving effect to the advances
requested to be made.

Each request for an advance hereunder shall constitute a warranty and
representation by the Borrower that each of the conditions contained in Section
5.2 (a) and (b) have been satisfied.

5.3.   Conditions Precedent to Advance Under the Draw Loan.
       ---------------------------------------------------

       The Bank shall not be required to make any disbursement or advance under
the Draw Loan, unless on the date such advance is to made:

       (a)  Warranties and Representations. The warranties and representations
            ------------------------------
set forth in Section 6 hereof and each of the representations and warranties
contained in any certificate, document or financial or other statement furnished
at any time pursuant to this Agreement or any related document shall be true and
correct on and as of such date with the same effect as though such warranty or
representation had been made on and as of such date, except to the extent that
such warranty or representation is stated to expressly relate solely to an
earlier date; and

                                      -16-
<PAGE>

       (b)  Compliance. The Borrower shall have complied and shall then be in
            ----------
compliance with all the terms, covenants and conditions of this Agreement which
are binding upon it, and no Event of Default or Pending Default shall have
occurred and be continuing on such date or after giving effect to the advances
requested to be made.

       (c)  Equipment Acquisitions.  The particular purchase or acquisition of
            ----------------------
equipment by the Borrower shall be acceptable to the Bank in its good faith
discretion and the Borrower shall have delivered to the Bank such purchase
orders, invoices, appraisals or other documents with respect to the equipment
being acquired as the Bank may request.  The Borrower shall also have executed
and delivered to the Bank UCC-1 financing statements and such other collateral
security documents or instruments as the Bank may deem necessary in order to
perfect a first priority security interest or other lien in and to the equipment
and other assets being acquired.

       (e)  No Pending Default.  After giving effect to each purchase or
            ------------------
acquisition of equipment by the Borrower and to the advance to be made under the
Draw Loan, no Pending Default will exist.

6.     Warranties and Representations.

       In order to induce the Bank to enter into this Agreement and to make the
Loans and the other financial accommodations to the Borrower, the Borrower
represents and warrants to the Bank that each of the following statements is
true and correct:

6.1.   Corporate Organization and Authority.

       The Borrower (a) is a corporation duly organized, validly existing and in
good standing under the laws of the State of Ohio; (b) has all requisite
corporate power and authority and all necessary licenses and permits to own and
operate its properties and to carry on its business as now conducted and as
presently proposed to be conducted; and (c) is not doing business or conducting
any activity in any jurisdiction in which it has not duly qualified and become
authorized to do business.

6.2.   Borrowing is Legal and Authorized.

       (a) The Board of Directors of the Borrower has duly authorized the
execution and delivery of this Agreement and of the notes and documents
contemplated herein; this Agreement, the notes and other documents executed in
connection with this Agreement will constitute valid and binding obligations
enforceable in accordance with their respective terms; (b) the execution of this
Agreement and related notes and documents and the compliance with all the
provisions of this Agreement (i) are within the corporate powers of the
Borrower; and (ii) are legal and will not conflict with, result in any breach in
any of the provisions of, constitute a default under, or result in the creation
of any lien or encumbrance upon any property of the Borrower under the

                                      -17-
<PAGE>

provisions of, any agreement, charter instrument, bylaw, or other instrument to
which the Borrower is a party or by which it may be bound; (c) there are no
limitations in any indenture, contract, agreement, mortgage, deed of trust or
other agreement or instrument to which the Borrower is now a party or by which
the Borrower may be bound with respect to the payment of principal or interest
on any indebtedness, or the Borrower's ability to incur indebtedness including
the notes to be executed in connection with this Agreement.

6.3.   Taxes.

       All tax returns and reports required to be filed by the Borrower have
been filed, and all taxes, assessments, fees and other governmental charges upon
the Borrower and upon its property, assets, income and franchises which are
shown in such returns or reports to be due and payable have been paid, except
those taxes, assessments, fees and other governmental charges that are not
required to be paid by Section 7.1 hereof. The Borrower does not know of any
proposed additional tax assessment against it. The accruals for taxes on the
books of the Borrower for its current fiscal period are adequate.

6.4.   Compliance with Law.

       The Borrower (a) is not in violation of any laws, ordinances,
governmental rules or regulations to which it is subject, including without
limitation any laws, rulings or regulations relating to the Employee Retirement
Income Security Act of 1974 or Section 4975 of the Internal Revenue Code and (b)
has not failed to obtain any licenses, permits, franchises or other governmental
or environmental authorizations necessary to the ownership of its properties or
to the conduct of its business, which violation or failure might have a Material
Adverse Effect.

6.5.   Financial Statements; Full Disclosure.

       The financial statements for the fiscal year ending December 31, 1998,
which have been supplied to the Bank, have been prepared in accordance with GAAP
and fairly represent the Borrower's financial condition as of such date, and the
financial statements for the interim period ending _____________, 1999, which
have been supplied to the Bank, fairly represent the Borrower's financial
condition as of such date.  No material adverse change in the Borrower's
financial condition has occurred since such dates.  The financial statements
referred to in this paragraph do not, nor does this Agreement or any written
statement furnished by the Borrower to the Bank in connection with obtaining the
Loans, contain any untrue statement of a material fact or omit a material fact
necessary to make the statements contained therein or herein not misleading.
The Borrower has disclosed to the Bank in writing all facts, including, without
limitation, all pending litigation, administrative proceedings, and arbitration
proceedings, which materially affect the properties, business, prospects,
profits or condition (financial or otherwise) of the Borrower or the ability of
the Borrower to perform this Agreement.

6.6.   Litigation: Adverse Effects.

                                      -18-
<PAGE>

       Schedule 6.6 attached hereto contains a description of all pending or
       ------------
threatened claims involving individual claims against the Borrower in excess of
$100,000.00.  There is no action, suit, audit, proceeding, investigation or
arbitration (or series of related actions, suits, proceedings, investigations or
arbitrations) pending before or by any governmental authority or private
arbitrator or, to the knowledge of the Borrower, threatened against the Borrower
or any property of the Borrower (i) challenging the validity or the
enforceability of any of this Agreement, or any loan document, agreement, or
instrument executed in connection herewith, or (ii) which has had, shall have or
is reasonably likely to have a Material Adverse Effect.  The Borrower is not (A)
in violation of any applicable requirements of law which violation shall have or
is likely to result in a Material Adverse Effect, or (B) subject to or in
default with respect to any final judgment, writ, injunction, restraining order
or order of any nature, decree, rule or regulation of any court or governmental
authority, in each case which shall have or is likely to have a Material Adverse
Effect.  "Material Adverse Effect" means a material adverse effect upon (a) the
business, condition (financial or otherwise), operations, performance,
properties or prospects of the Borrower or any guarantor or Subsidiary, (b) the
ability of the Borrower or any guarantor or Subsidiary to perform its
obligations under this Agreement or any document, agreement, guaranty, or
instrument executed in connection herewith, or (c) the ability of the Bank to
enforce the terms of this Agreement, or any document, agreement, guaranty, or
instrument executed in connection herewith.

6.7.   Solvency.

       After giving effect to all indebtedness of the Borrower on the date of
the initial advance hereunder (including without limitation the Loans) and such
other dates as advances are requested under the Revolving Loan hereunder, the
Borrower (a) is able to pay its obligations as they become due and payable; (b)
has assets, the present fair saleable value of which exceeds the amount that
will be required to pay its probable liability on its obligations, including,
without limitation, Contingent Obligations, as the same become absolute and
matured; (c) has sufficient property, the sum of which at a fair valuation
exceeds all of its indebtedness; and (d) has sufficient capital to engage in its
business. In addition, the Borrower's grant of the Collateral for the Loans
constitutes fair consideration and reasonably equivalent value because the
Borrower has received the proceeds of the Loans.

6.8.   Government Consent.

       Neither the nature of the Borrower or of its business or properties, nor
any relationship between the Borrower and any other entity or person, nor any
circumstance in connection with the execution of this Agreement, is such as to
require a consent, approval or authorization of, or filing, registration or
qualification with, any governmental authority on the part of the Borrower as a
condition to the execution and delivery of this Agreement and the notes and
documents contemplated herein.

6.9.   Title to Properties.

                                      -19-
<PAGE>

       The Borrower (a) has good title to all the property in which it has a
property interest, free from any liens and encumbrances, except as set forth on
Exhibit B attached to this Agreement, and (b) has not agreed or consented to
---------
cause or permit in the future (upon the happening of a contingency or otherwise)
any of its property whether now owned or hereafter acquired to be subject to a
lien or encumbrance except as provided in this paragraph.

6.10.  No Defaults.

       No event has occurred and no condition exists which would constitute a
Pending Default or an Event of Default pursuant to this Agreement.  The Borrower
is not in violation in any material respect of any term of any agreement,
charter instrument, bylaw or other instrument to which it is a party or by which
it may be bound.

6.11.  Environmental Protection.

       The Borrower (a) has no actual knowledge of the permanent placement,
burial or disposal of any Hazardous Substances (as hereinafter defined) on any
real property owned, leased, or used by the Borrower (the "Premises"), of any
spills, releases, discharges, leaks, or disposal of Hazardous Substances that
have occurred or are presently occurring on, under, or onto the Premises, or of
any spills, releases, discharges, leaks or disposal of Hazardous Substances that
have occurred or are occurring off the Premises as a result of the improvement,
operation, or use of the Premises which would result in non-compliance with any
of the Environmental Laws (as hereinafter defined); (b) is and has been in
compliance with all applicable Environmental Laws; (c) knows of no pending or
threatened environmental civil, criminal or administrative proceedings against
the Borrower relating to Hazardous Substances; (d) knows of no facts or
circumstances that would give rise to any future civil, criminal or
administrative proceeding against the Borrower relating to Hazardous Substances;
and (e) will not permit any of its employees, agents, contractors,
subcontractors, or any other person occupying or present on the Premises to
generate, manufacture, store, dispose or release on, about or under the Premises
any Hazardous Substances which would result in the Premises not complying with
the Environmental Laws.

       As used herein, "Hazardous Substances" shall mean and include all
hazardous and toxic substances, wastes, materials, compounds, pollutants and
contaminants (including, without limitation, asbestos, polychlorinated
biphenyls, and petroleum products) which are included under or regulated by the
Comprehensive Environmental Response, Compensation and Liability Act, as amended
(42 U.S.C. (S)9601, et seq.), the Hazardous Materials Transportation Act, as
                    ------
amended (49 U.S.C. (S)1801, et seq.), the Toxic Substances Control Act, as
                            ------
amended (15 U.S.C. (S)2601, et seq.), the Resource Conservation and Recovery
                            ------
Act, as amended (42 U.S.C. (S)6901, et seq.), the Water Quality Act of 1987, as
                                    ------
amended (33 U.S.C. (S)1251, et seq.), the Clean Water Act, as amended (33 U.S.C.
                            ------
(S)1321 et seq.), the Federal Insecticide, Fungicide, and Rodenticide Act, as
        ------
amended (7 U.S.C. Sec. 136, et seq.), the National Environmental Policy Act of
                            ------
1969, as amended (42 U.S.C. Sec. 4321, et seq.), and the Clean Air Act, as
                                       ------
amended (42 U.S.C. (S)7401, et seq.), and any other federal, state or local
                            ------
statute, ordinance, law, code, rule, regulation or order

                                      -20-
<PAGE>

 regulating or imposing liability (including strict liability) or standards of
conduct regarding Hazardous Substances (hereinafter the "Environmental Laws"),
but does not include such substances as are permanently incorporated into a
structure or any part thereof in such a way as to preclude their subsequent
release into the environment, or the permanent or temporary storage or disposal
of household hazardous substances by tenants, and which are thereby exempt from
or do not give rise to any violation of any Environmental Laws.

6.12.  Regarding the Accounts and Inventory.

       (a) Each of the accounts is based on an actual bona fide, and genuine (i)
sale and delivery of goods or (ii) rendering or performance of services in the
ordinary course of business, the Account Debtors have accepted such goods or
services and unconditionally owe and are obligated to pay the full amounts
reflected in the invoices according to the terms thereof without any defense,
offset or counterclaim; (b) all of the shipping and delivery receipts and other
documents to be given to the Bank with respect to the accounts are genuine; (c)
to the best of the Borrower's knowledge, pursuant to its customary credit
investigation in the ordinary course of business as of the date each account is
created, each of the Account Debtors is solvent and able to pay such account
when due, or with respect to any Account Debtors who are not solvent, the
Borrower has set up on it books and in its financial records bad debt reserves
adequate to cover such accounts; (d) each of the accounts referenced on the
Borrower's most recent loan and collateral report or other Borrowing Base
certificate against which the Borrower has requested an advance under the
Revolving Loan is an Eligible Account; and (e) all of the inventory referenced
on the Borrower's most recent loan and collateral report or other Borrowing Base
certificate against which the Borrower has requested an advance under the
Revolving Loan is Eligible Inventory.

6.13.  Margin Loans.

       None of the transactions contemplated in the Agreement will violate or
result in a violation of Section 7 of the Securities Exchange Act of 1934, as
amended, or any regulation issued pursuant thereto, including, without
limitation, Regulation U of the Board of Governors of the Federal Reserve
System, 12 C.F.R., Chapter II.  The Borrower does not own or intend to carry or
purchase any "margin security" within the meaning of said Regulation U.  None of
the proceeds of the Loans have been or will be used to purchase or refinance any
borrowing, the proceeds of which were used to purchase any "security" within the
meaning of the Securities Exchange Act of 1934, as amended.

6.14.  Intellectual Property

       The Borrower owns or has the legal and valid right to use all
Intellectual Property necessary for the present and planned operation of its
business without any known conflict with the rights of others, free from any
lien or encumbrance not permitted under Section 7.5 below and free of any
restrictions material to the operation of its business as presently conducted.
Except as set forth in Schedule 6.14 attached hereto, the Borrower (a) has no
Intellectual

                                      -21-
<PAGE>

Property, (b) licenses no Intellectual Property, and (c) is a party to no
material license agreement with respect to any Intellectual Property.

7.     Borrower Business Covenants.

       The Borrower covenants that on and after the date of this Agreement until
terminated pursuant to the terms of this Agreement, or so long as any of the
indebtedness provided for herein remains unpaid:

7.1.   Payment of Taxes and Claims.

       The Borrower will pay (a) all taxes, estimated payments, assessments and
governmental charges or levies imposed upon it or its property or assets or in
respect of any of its franchises, businesses, income or property before any
penalty or interest accrues thereon; and (b) all claims of materialmen,
mechanics, carriers, warehousemen, landlords, bailees and other like persons,
(including, without limitation, claims for labor, services, materials and
supplies) for sums which have become due and payable and which by law have or
may become a lien or encumbrance upon any of the Borrower's property or assets,
prior to the time when any penalty or fine shall be incurred with respect
thereto; provided, however, that no such taxes, assessments and governmental
         --------- -------
charges referred to in clause (a) above or claims referred to in clause (b)
                                                                 ----------
above are required to be paid if being contested in good faith by the Borrower,
by appropriate proceedings diligently instituted and conducted, without danger
of any material risk to the Collateral or the Bank's interest therein, without
any of the same becoming a lien upon the Collateral, and if such reserve or
other appropriate provision, if any, as shall be required in conformity with
GAAP, shall have been made therefor.

7.2.   Maintenance of Properties and Corporate Existence.

       The Borrower shall (a) maintain its property in good condition and make
all renewals, replacements, additions, betterments and improvements thereto
which it deems necessary; (b) maintain, with financially sound and reputable
insurers, insurance with respect to its properties and business against such
casualties and contingencies, of such types (including but not limited to fire
and casualty, public liability, products liability, larceny, embezzlement or
other criminal misappropriation insurance) and in such amounts as is customary
in the case of entities of established reputations engaged in the same or a
similar business and similarly situated, with each such policy of insurance
containing a clause or endorsement satisfactory to the Bank that names the Bank
as additional insured and lender loss payee, as its interest may appear, and
that provides that no act, default or breach of warranty or condition of the
Borrower or any other person shall affect the right of the Bank to recover under
such policy or policies of insurance or to pay any premium in whole or in part
relating thereto, in such amounts as is customary in the case of entities of
established reputations engaged in the same or a similar business and similarly
situated; (c) reflect in its financial statements adequate accruals and
appropriations to reserves and keep and maintain proper books of record and
account in which entries in conformity with

                                      -22-
<PAGE>

GAAP shall be made of all dealings and transactions in relation to its
businesses and activities, including, without limitation, transactions and other
dealings with respect to the Collateral; (d) do or cause to be done all things
necessary (i) to preserve and keep in full force and effect its existence,
rights and franchises, and (ii) to maintain its status as a corporation duly
organized and existing and in good standing under the laws of the state of its
incorporation; (e) conduct continuously and operate actively its business and
take all actions necessary to enforce and protect the validity of any
intellectual property; and (f) not be in violation of any laws, ordinances, or
governmental rules and regulations or fail to obtain any licenses, permits,
franchises or other governmental authorizations necessary to the ownership of
its properties or to the conduct of its business, which violation or failure to
obtain might have a Material Adverse Effect.

7.3.   Restriction on Fundamental Changes; Conduct of Business.

       The Borrower shall not (a) enter into any merger or consolidation, or
liquidate, wind up or dissolve (or suffer any liquidation or dissolution), or
convey, lease, sell, transfer or otherwise dispose of, in one transaction or a
series of transactions, all or substantially all of the Borrower's business or
property, whether now or hereafter acquired, (b) enter into limited liability
companies, partnerships or joint ventures with any other entity, (c) acquire all
or substantially all of the assets or business of any other company, person or
entity, (d) create or acquire or permit to exist any subsidiaries, except for
Apex Telecommunications Manufacturing, Inc., a wholly-owned subsidiary of the
Borrower, (e) conduct business under any other tradenames other than without the
prior written consent of the Bank, or (f) engage in any business other than the
businesses engaged in by the Borrower on the date hereof and any business or
activities which are substantially similar or related thereto.

7.4.   Sale of Assets.

       The Borrower shall not sell, assign, lease, convey or otherwise dispose
of any property, whether now owned or hereafter acquired, or any income of
profits therefrom, or enter into any agreement to do so, except: (a) the sale or
transfer of Inventory in the ordinary course of business; (b) the disposition of
obsolete equipment in the ordinary course of business not to exceed $500,000.00
in any twelve month period, provided, however, that the Borrower shall provide
the Bank prior written notice of such sale or disposition, containing a specific
description of the equipment to be sold and the sale price of the same, or (c)
the disposition of equipment outside the ordinary course of business with the
prior written consent of and upon satisfaction of such conditions deemed
necessary or desirable by the Bank. Notwithstanding the foregoing, the Borrower
shall not sell, assign, or encumber, except to the Bank, any of its Accounts or
notes receivable and further shall not permit any of its Inventory to be sold or
transferred on consignment or acquire or possess any of its Inventory on
consignment.

7.5.   Negative Pledge.

                                      -23-
<PAGE>

       The Borrower will not cause or permit or permit to exist or agree or
consent to cause or permit in the future (upon the happening of a contingency or
otherwise), any of its real or personal property, whether now owned or hereafter
acquired, to become subject to a lien or encumbrance, except: (i) liens in
connection with deposits required by workers' compensation, unemployment
insurance, social security and other like laws; (ii) taxes, assessments,
reservations, exceptions, encroachments, easements, rights of way, covenants,
conditions, restrictions, leases and other similar title exceptions or
encumbrances affecting real property, provided they do not in the aggregate
                                      --------
materially detract from the value of said property or materially interfere with
its use in the ordinary conduct of business; (iii) inchoate liens arising under
ERISA to secure the contingent liability of the Borrower; (iv) liens as set
forth in Exhibit B attached to this Agreement; and (v) purchase money liens
         ---------
(including the interest of a lessor under a capitalized lease) securing
Permitted Purchase Money Indebtedness, provided that such liens shall apply only
to the property of the Borrower purchased under such capitalized lease.  In
addition, the Borrower will not grant or agree to provide in the future (upon
the happening of a contingency or otherwise), a "negative pledge" or other
covenant or agreement similar to this Section 7.5 in favor of any other lender,
creditor or third party.

7.6.   Indebtedness.

       The Borrower will not directly or indirectly create, incur, assume or
otherwise become or remain liable with respect to any Indebtedness, except (a)
the Loans; (b) secured or unsecured Purchase Money Indebtedness (including
capitalized leases) incurred by the Borrower to finance the acquisition of fixed
assets, if (i) such Indebtedness has a scheduled maturity and is not due on
demand, (ii) such Indebtedness in the aggregate does not exceed the sum of
$1,000,000.00 outstanding at any time, (iii) such Indebtedness does not exceed
the purchase price of the items being purchased, and (iv) such Indebtedness is
not secured by any property or assets other than the item or items being
purchased ("Permitted Purchase Money Indebtedness"); and (c) existing
indebtedness to First Federal Savings & Loan of Galion in an amount not
exceeding $1,000,000.00, which indebtedness shall be secured only as provided in
Exhibit B attached hereto.  "Indebtedness," as applied to the Borrower or any
                             -------------
other entity shall mean, at any time, (a) all indebtedness, obligations or other
liabilities (other than accounts payable arising in the ordinary course of the
Borrower's business payable on terms customary in the trade) which in accordance
with GAAP should be classified upon the Borrower's balance sheet as liabilities,
including, without limitation (i) for borrowed money or evidenced by debt
securities, debentures, acceptances, notes or other similar instruments, and any
accrued interest, fees and charges relating thereto, (ii) under profit payment
agreements or in respect of obligations to redeem, repurchase or exchange any
securities or to pay dividends in respect of any stock, (iii) with respect to
letters of credit issued, (iv) to pay the deferred purchase price of property or
services, except accounts payable and accrued expenses arising in the ordinary
course of business, or (v) in respect of capital leases; (b) all indebtedness,
obligations or other liabilities secured by a lien on any property, whether or
not such indebtedness, obligations or liabilities are assumed by the owner of
the same; and (c) all indebtedness, obligations or other liabilities in respect
of interest rate contracts and currency agreements, net of liabilities owed by
the counterparties thereon.

                                      -24-
<PAGE>

7.7. Contingent Obligations.

     The Borrower shall not directly or indirectly create or become liable with
respect to any Contingent Obligation, except (a) recourse obligations resulting
from the indorsement of negotiable instruments for collection in the ordinary
course of business, (b) those permitted existing Contingent Obligations set
forth on Schedule 7.7 attached hereto not to exceed the amounts set forth in
         ------------
such Schedule, and any extensions or renewals thereof, (c) the guaranty of
certain obligations of the Borrower's wholly-owned subsidiary, Apex
Telecommunications Manufacturing, Inc. ("Apex") to the Bank, which guaranty is
evidenced by a certain Guaranty Agreement dated as of September 1, 1999, as the
same may be modified, amended or restated from time to time, (d) obligations,
warranties and indemnities not relating to Indebtedness, which have been or are
undertaken or made in the ordinary course of the Borrower's business, and (e)
Contingent Obligations with respect to surety, appeal and performance bonds
obtained by the Borrower.  "Contingent Obligations" means any agreement,
undertaking or arrangement by which the Borrower assumes, guaranties, endorses,
agrees to provide funding, or otherwise becomes or is contingently liable upon
the obligation or liability of any other person, partnership, corporation,
limited liability company or other.

7.8. Loans and Advances, Investments.

     The Borrower shall not directly or indirectly make or own any Investment
except: (a) bonds or other obligations of the United States of America,
certificates of deposit issued by commercial banks, and commercial paper rated
at least A-1 or P-1 and having a maturity of not more than one year; (b) loans
or advances to employees of the Borrower, which loans and advances shall not in
the aggregate exceed $20,000.00 outstanding at any time, (c) Investments in
Apex, which Investments shall not exceed the aggregate amount of $500,000.00
outstanding at any one time, and (d) any other Investment not to exceed the
aggregate amount of $20,000 outstanding at any time.  "Investment" means any
loan, advance, extension of credit (other than accounts receivable arising in
the ordinary course of business on terms customary in the trade), deposit
account, contribution of capital or transfer of any assets to any other entity
or any investment in, or purchase or other acquisition of, the stock,
partnership interests, ownership interests in any limited liability company,
notes, debentures, or other securities of any other entity made by the Borrower.

7.9. Management

     The Borrower shall not permit any material change in its management.

                                      -25-
<PAGE>

7.10.  Acquisition of Capital Stock.

       Except as provided by the terms of various shareholders' agreements
between the Borrower and certain shareholders of the Borrower that have been
provided to the Bank on or before the execution of this Agreement, the Borrower
shall not directly or indirectly redeem or acquire any of its own capital stock,
or any warrants or any securities for its capital stock, except through the use
of the net proceeds from the simultaneous sale of an equivalent amount of its
capital stock for the same purchase or redemption price. Notwithstanding the
foregoing, no such redemption or acquisition of capital stock shall be made if,
after giving effect to such redemption or acquisition, a Pending Default would
exist under this Agreement.

7.11.  Cash Dividends and Other Distributions.

       The Borrower shall not declare or pay any cash dividends which total in
excess of $100,000.00 in any fiscal year, which dividends shall be paid only out
of net earnings of the Borrower for such year.  The Borrower shall make no other
distributions of any kind to shareholders, except for payment to a deceased
shareholder's estate in accordance with the terms of various shareholders'
agreements between the Borrower and certain shareholders of the Borrower that
have been provided to the Bank on or before the execution of this Agreement.
Notwithstanding the foregoing, no dividends or distributions shall be paid if,
after giving effect to such dividend or distribution, a Pending Default would
exist under this Agreement.

7.12.  Transactions with Affiliates.

       The Borrower shall not, except as otherwise expressly permitted herein,
directly or indirectly enter into or permit to exist any of the following: (i)
make any investment in an Affiliate of the Borrower; (ii) transfer, sell, lease,
assign or otherwise dispose of any asset to any Affiliate of the Borrower, (iii)
merge into or consolidate with or purchase or acquire assets from any Affiliate
of the Borrower; (iv) repay any Indebtedness to any Affiliate of the Borrower;
(v) pay any royalties or license fees to any Affiliate of the Borrower; (vi) pay
any management or consulting fees to any Affiliate of the Borrower; (vii) enter
into any other transaction directly or indirectly with or for the benefit of any
Affiliate of the Borrower (including, without limitation, guaranties and
assumptions of obligations of any such Affiliate) except in each case for
transactions (A) in the ordinary course of business and (B) either on a basis no
                                                    ---
less favorable to the Borrower as would be obtained in a comparable arm's length
transaction with a person, entity or corporation not an Affiliate, or in the
case of compensation payable to any officer or director of the Borrower, in an
amount approved by the Board of Directors of the Borrower. "Affiliate" shall
mean any individual, partnership, corporation, or other entity which, directly
or indirectly, is in control of, is controlled by, or is under common control
with the Borrower, or is a family member of any of the foregoing individuals
related by birth or marriage.  For the purposes of this definition, "control" of
such entity shall mean the power, directly or indirectly, to vote 5% or more of
the securities, units or other measures having ordinary voting power for the
election of directors, management committees, or similar committees of such
entity, or the power to direct

                                      -26-
<PAGE>

or cause the direction of the management and policies of such entity, whether by
contract or otherwise.

7.13.  Book Net Worth.

       The Borrower, on a consolidated basis, shall maintain at all times
shareholders' equity, as determined in accordance with GAAP ("Book Net Worth")
of not less than $15,000,000.00.  For purposes of calculating book net worth in
this Section, the Inventory of the Borrower and its Subsidiaries shall be valued
on a FIFO basis.

7.14.  Leverage Ratio.

       The Borrower, on a consolidated basis, shall maintain at all times a
ratio of Consolidated Total Liabilities to Book Net Worth of not greater than
(a) 2.25 to 1.00. "Consolidated Total Liabilities" means, at the time of each
determination, with respect to the Borrower and all of its Subsidiaries, on a
consolidated basis, (a) all indebtedness for borrowed money or for the deferred
purchase price of property or services, (b) any other indebtedness which is
evidenced by a note, bond, debenture or similar instrument, (c) all obligations
with respect to any letter of credit issued for the account of the Borrower or
any Subsidiary, (d) all obligations in respect of acceptances issued or created
for the account of the Borrower or any Subsidiary, (e) lease obligations which,
in accordance with GAAP, should be capitalized, (f) all liabilities (including
lease obligations) secured by any lien or encumbrance on any property owned by
the Borrower or any Subsidiary even though the Borrower or any such Subsidiary
has not assumed or otherwise become liable for the payment thereof, (g) all
obligations of the Borrower or any Subsidiary with respect to interest rate
protection agreements (valued at the termination value thereof computed in
accordance with a method approved by the International Swap Dealers
Association), and (h) all other obligations of the Borrower and its
Subsidiaries, and each of them, which, in accordance with GAAP, would be
classified upon a balance sheet as liabilities (except capital stock and surplus
earned). A "Subsidiary" of the Borrower means (i) any corporation more than
fifty percent (50%) of the outstanding security having ordinary voting power of
which shall at the time be owned or controlled, directly or indirectly, by the
Borrower or by one or more of its subsidiaries or by the Borrower and one or
more of its subsidiaries, or (ii) any partnership, association, joint venture or
similar business organization more than fifty percent (50%) of the ownership
interest have ordinary voting power of which shall at the time be so owned or
controlled.

7.15.  Current Ratio.

       The Borrower, on a consolidated basis, shall maintain at all times a
ratio of current assets to current liabilities of not less than 1.0 to 1.0. For
purposes of this Section 7.15, the Revolving Loan shall be classified as a long
term liability.

7.16.  Capital Expenditures.

                                      -27-
<PAGE>

       The Borrower will not make or incur any Capital Expenditures, including
by way of the incurrence of capitalized lease obligations, expenditures for
maintenance and repairs which should be capitalized in accordance with GAAP or
otherwise in excess of $3,000,000.00 in any fiscal year. "Capital Expenditures"
means the aggregate of all expenditures (whether paid in cash or accrued as
liabilities that in accordance with GAAP are required to be included in or
reflected by the property, plant, equipment or similar fixed asset accounts.

7.17.  Operating Lease Rentals.

       The Borrower will not without the prior written approval of the Bank
enter into or permit to exist operating leases providing in the aggregate for
annual rentals which exceed $100,000.00 in any fiscal year.

7.18.  Environmental Compliance and Indemnification.

       The Borrower hereby indemnifies the Bank and holds the Bank harmless from
and against any loss, damage, cost, expense or liability (including strict
liability) directly or indirectly arising from or attributable to the
generation, storage, release, threatened release, discharge, disposal or
presence (whether prior to or during the term of the Loans) of Hazardous
Substances on, under or about the Premises (whether by the Borrower or any
employees, agents, contractors or subcontractors of the Borrower or any
predecessor in title or any third persons occupying or present on the Premises),
or the breach of any of the representations and warranties regarding the
Premises, including, without limitation: (a) those damages or expenses arising
under the Environmental Laws; (b) the costs of any repair, cleanup or
detoxification of the Premises, including the soil and ground water thereof, and
the preparation and implementation of any closure, remedial or other required
plans; (c) damage to any natural resources; and (d) all reasonable costs and
expenses incurred by the Bank in connection with clauses (a), (b) and (c)
including, but not limited to reasonable attorneys' fees.

       The indemnification provided for herein shall not apply to any losses,
liabilities, damages, injuries, expenses or costs which: (i) arise from the
gross negligence or willful misconduct of the Bank, or (ii) relate to Hazardous
Substances placed or disposed of on the Premises after the Bank acquires title
to the Premises through foreclosure or otherwise.

7.19.  Maintenance of Accounts

       The Borrower shall not maintain or have any operating accounts or other
accounts at any bank, depositary source or other financial institution where
money or proceeds of Collateral is deposited or maintained, other than the Cash
Collection Account or other accounts acceptable to the Bank in its sole good
faith discretion.

8.     Financial Information and Reporting.

                                      -28-
<PAGE>

       The Borrower shall deliver the following to the Bank:

       (a)  within 20 days after the end of each month, consolidated financial
statements, including a balance sheet and statements of income and surplus, and
statement of cash flows, certified by the president or chief financial officer
of the Borrower (a "Financial Officer") as fairly representing the Borrower's
consolidated financial condition as of the end of such period;

       (b)  within 20 days after the end of each month, a loan and collateral
report and a statement in form prescribed by the Bank and signed by a Financial
Officer of the Borrower setting forth and certifying the calculation of the
Borrowing Base as of the end of that period and certifying the compliance of the
Borrower with the terms of this Agreement and the calculation of the financial
covenants contained in Section 7 above;

       (c)  within 20 days after the end of each month, an inventory report of
the Borrower, signed by a Financial Officer in form satisfactory to the Bank;

       (d)  within 20 days after the end of each month, a report, in form
satisfactory to the Bank, certified by a Financial Officer setting forth the
number and dollar total of accounts receivable due and payable (i) not more than
30 days, (ii) more than 30 days and not more than 60 days, (iii) more than 60
days and not more than 90 days, (iv) more than 90 and not more than 120 days,
and (v) more than 120 days, from the date of the original invoice therefor;

       (e)  within 90 days after the end of each fiscal year, audited,
unqualified consolidated financial statements prepared in accordance with GAAP
and certified by independent public accountants satisfactory to the Bank,
containing a balance sheet, statements of income and surplus, statements of cash
flows and reconciliation of capital accounts, along with any management letters
written by such accountants;

       (f)  immediately upon becoming aware of the existence of any Pending
Default, Event of Default or breach of any term or conditions of this Agreement,
a written notice specifying the nature and period of existence thereof and what
action the Borrower is taking or proposes to take with respect thereto; and

       (g)  at the request of the Bank, such other information as the Bank may
from time to time reasonably require.

9.     Default.

9.1.   Events of Default

       Each of the following shall constitute an "Event of Default" hereunder:
(a) the Borrower fails to make any payment of principal, interest or any other
sum due and payable under any note executed in connection with this Agreement on
or before the date such payment is due; (b) the

                                      -29-
<PAGE>

Borrower fails to perform or observe any agreement, term, or covenant contained
in Sections 1, 3, 4, 7, or 8 of this Agreement; (c) the Borrower fails to comply
with any other provision of this Agreement, or the Borrower or any Affiliate
fails to perform or observe any covenant contained in any mortgage, security
agreement or other agreement in favor of the Bank, and any such failure
continues for more than 15 days after such failure shall first become known to
any officer of the Borrower or such Affiliate; (d) any warranty, representation
or other statement made or deemed to be made contained in this Agreement or in
any instrument furnished in compliance with or in reference to this Agreement is
false or misleading in any material respect; (e) the Borrower or any Subsidiary
becomes insolvent or makes an assignment for the benefit of creditors, or
consents to the appointment of a trustee, receiver or liquidator; (f)
bankruptcy, reorganization, arrangement, insolvency or liquidation proceedings
are instituted by or against the Borrower or any Subsidiary; (g) a final
judgment or judgments for the payment of money aggregating in excess of
$200,000.00 is or are outstanding against the Borrower or any Subsidiary, and
any such judgment or judgments have not been discharged in full or stayed; (h)
the occurrence of any event which allows the acceleration of the maturity of any
indebtedness of the Borrower or any Subsidiary to the Bank or any of the Bank's
affiliates; (i) the occurrence of any event which allows the acceleration of the
maturity of any material Indebtedness of the Borrower or any Subsidiary or
constitutes a default or breach under any material lease or material contract to
any other person, corporation or entity (other than the Bank) under any
indenture, agreement or undertaking; (j) the default by any Affiliate, or the
default by, dissolution of, or death of any guarantor, insurer or other surety
for the Borrower, with respect to any obligation or liability to the Bank or any
of the Bank's affiliates; (k) a Change of Control of the Borrower shall have
occurred; (l) the property furnished as Collateral declines in value, and the
Borrower does not immediately, upon demand, furnish additional security
satisfactory to the Bank; or (m) the Bank, in its sole good faith discretion,
determines that a Material Adverse Effect has occurred or that a material
adverse change has occurred in the financial condition, operations or business
of the Borrower, in the value of the Collateral or in the Bank's interest in the
Collateral. As used herein, "Change of Control" means (1) the replacement of a
majority of the Board of Directors of any entity from the directors who
constituted the Board of Directors on the date of this Agreement for any reason
other than death or disability, and such replacement shall not have been
approved by the Board of Directors of the Borrower as constituted on the date of
this Agreement (or as changed over time with the approval of the Board of
Directors of such entity); or (2) a company, person, entity or group of
companies, person or entities acting in concert, shall, as a result of a tender
or exchange offer, open market purchases, privately negotiated purchases,
exercise of the stock pledge, death of a shareholder or otherwise, have become
the beneficial owner (within the meaning of Rule 13d.3 under the Securities
Exchange Act of 1934, as amended) of securities of the Borrower representing
more than 10% of the combined voting power of the outstanding securities of the
Borrower ordinarily having the right to vote in the election of directors from
the beneficial owners as of the date hereof.

9.2.   Default Remedies.

       Upon the occurrence of an Event of Default, the Bank may immediately
exercise any right, power or remedy permitted to the Bank by law or any
provision of this Agreement, and

                                      -30-
<PAGE>

shall have, in particular, without limiting the generality of the foregoing, the
right to declare the entire principal, all interest accrued, and all other
charges accruing on all Obligations to be forthwith due and payable, without any
presentment, demand, protest or other notice of any kind, all of which are
hereby expressly waived by the Borrower.

10.    Miscellaneous

10.1.  Notices.

       (a)  All communications under this Agreement or under the notes executed
pursuant hereto shall be in writing and shall be sent by facsimile or by a
nationally recognized overnight delivery service (1) if to the Bank, at the
following address, or at such other address as may have been furnished in
writing to the Borrower by the Bank:

       The Huntington National Bank
       2313 Village Park Court South
       Mansfield, Ohio 44906
       Attn:  Glenn W. McClelland
       Telecopier No.:  (419) 747-7108

(2) if to the Borrower, at the following address, or at such other address as
may have been furnished in writing to the Bank by the Borrower:

       PECO II, Inc.
       1376 State Route 598
       Galion, Ohio 44833
       Attn:  President and CEO
       Telecopier No.:  (419) 468-3688

(b) any notice so addressed and sent by telecopier shall be deemed to be given
when confirmed, and any notice sent by nationally recognized overnight delivery
service shall be deemed to be given the next day after the same is delivered to
such carrier.

10.2.  Access to Accountants.

       The Borrower hereby irrevocably authorizes its certified public
accountants to provide to the Bank any and all information that the Bank
requests from time to time with regard to the Borrower, and to discuss with the
Bank from time to time any and all matters relating to the Borrower.  In
furtherance of the foregoing, the Borrower hereby waives any privilege or claim
of confidentiality to the extent such might otherwise prevent such accountants
from providing such information to the Bank or discussing such matters with the
Bank.

10.3.  Reproduction of Documents.

                                      -31-
<PAGE>

       This Agreement and all documents relating hereto, including, without
limitation, (a) consents, waivers and modifications which may hereafter be
executed, (b) documents received by the Bank at the closing or otherwise, and
(c) financial statements, certificates and other information previously or
hereafter furnished to the Bank, may be reproduced by the Bank by any
photographic, photostatic, microfilm, micro-card, miniature photographic or
other similar process and the Bank may destroy any original document so
reproduced.  The Borrower agrees and stipulates that any such reproduction shall
be admissible in evidence as the original itself in any judicial or
administrative proceeding (whether or not the original is in existence and
whether or not such reproduction was made by the Bank in the regular course of
business) and that any enlargement, facsimile or further reproduction of such
reproduction shall likewise be admissible in evidence.

10.4.  Costs and Expenses.

       The Borrower agrees to pay service charges, analysis fees, and all costs
and expenses incidental to or in connection with this Agreement or any service
provided by the Bank, the enforcement of the Bank's rights in connection
therewith, any amendment or modification of this Agreement or any other loan
documents, any litigation, contest, dispute, proceeding or action in any way
relating to the Collateral or to this Agreement, whether any of the foregoing
are incurred prior to or after maturity, the occurrence of an Event of Default,
or the rendering of a judgment.  Such costs shall include, but not be limited
to, fees and out-of-pocket expenses of the Bank's counsel, recording fees,
inspection fees, revenue stamps and note and mortgage taxes.

10.5.  Survival, Successors and Assigns.

All warranties, representations, and covenants made by the Borrower herein or on
any certificate or other instrument delivered by it or on its behalf under this
Agreement shall be considered to have been relied upon by the Bank and shall
survive the closing of the Loans regardless of any investigation made by the
Bank on its behalf.  All statements in any such certificate or other instrument
shall constitute warranties and representations by the Borrower.  This Agreement
shall inure to the benefit of and be binding upon the heirs, successors and
assigns of each of the parties.

10.6.  Amendment and Waiver, Duplicate Originals.

All references to this Agreement shall also include all amendments, extensions,
renewals, modifications, and substitutions thereto and thereof made in writing
and executed by both the Borrower and the Bank.  This Agreement may be amended,
and the observance of any term of this Agreement may be waived, with (and only
with) the written consent of the Borrower and the Bank; provided however that
                                                        -------- ------- ----
nothing herein shall change the Bank's sole discretion (as set forth elsewhere
in this Agreement) to make advances, determinations, decisions or to take or
refrain from taking other actions.  No delay or failure or other course of
conduct by the Bank in the exercise of any power or right shall operate as a
waiver thereof; nor shall any single or partial

                                      -32-
<PAGE>

exercise of the same preclude any other or further exercise thereof, or the
exercise of any other power or right. Two or more duplicate originals of this
Agreement may be signed by the parties, each of which shall be an original but
all of which together shall constitute one and the same instrument.

10.7.  Accounting Treatment and Fiscal Year.

       The Borrower shall not change its fiscal year for accounting or tax
purposes from a period consisting of the twelve month period ending on December
31 of each calendar year.  The Borrower shall not make any material (as defined
in GAAP) change in accounting treatment and reporting practices or tax reporting
treatment, except as required by GAAP or law and disclosed in writing to the
Bank at the address set forth herein.

10.8.  Enforceability and Governing Law.

       Any provision of this Agreement which is prohibited or unenforceable in
any jurisdiction, as to such jurisdiction, shall be inapplicable or 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. No delay or omission on the part of the Bank in exercising
any right shall operate as a waiver of such right or any other right. All of the
Bank's rights and remedies, whether evidenced hereby or by any other agreement
or instrument, shall be cumulative and may be exercised singularly or
concurrently. This Agreement shall be governed by and construed in accordance
with the laws of the State of Ohio (without giving effect to the conflict of
laws rules thereof). The Borrower agrees that any legal suit, action or
proceeding arising out of or relating to this Agreement may be instituted in a
state or federal court of appropriate subject matter jurisdiction in the State
of Ohio, waives any objection which it may have now or hereafter to the venue of
any suit, action or proceeding, and irrevocably submits to the jurisdiction of
any such court in any such suit, action or proceeding.

10.9.  Confidentiality.

       The Bank shall hold all non-public information obtained pursuant to the
requirements hereof and identified as such by the Borrower in accordance with
the Bank's customary procedures for handling confidential information of this
nature and in accordance with safe and sound banking practices, and in any event
may make disclosures reasonably required by a bona fide Participant in
connection with the contemplated participation, or as required or requested by
any governmental authority or any representative thereof, or pursuant to any
legal process, or to its accountants, lawyers and other advisors.

10.10. Waiver of Right to Trial by Jury.

       EACH PARTY TO THIS AGREEMENT HEREBY EXPRESSLY WAIVES ANY RIGHT TO TRIAL
BY JURY OF ANY CLAIM, DEMAND, ACTION OR CAUSE OF

                                      -33-
<PAGE>

ACTION (1) ARISING UNDER THIS AGREEMENT OR ANY OTHER INSTRUMENT, DOCUMENT OR
AGREEMENT EXECUTED OR DELIVERED IN CONNECTION HEREWITH, OR (2) IN ANY WAY
CONNECTED WITH OR RELATED OR INCIDENTAL TO THE DEALINGS OF THE PARTIES HERETO OR
ANY OF THEM WITH RESPECT TO THIS 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 AGREES AND 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 AGREEMENT MAY FILE AN ORIGINAL COUNTERPART OR A COPY OF THIS SECTION WITH
ANY COURT AS WRITTEN EVIDENCE OF THE CONSENT OF THE PARTIES HERETO TO THE WAIVER
OF THEIR RIGHT TO TRIAL BY JURY.

10.11. Warrant of Attorney.

       The Borrower authorizes any attorney at law to appear in any court of
record in the State of Ohio or in any state or territory of the United States
after the Obligations under or referred to in this Agreement become due, whether
by acceleration or otherwise, to waive the issuing and service of process, and
to confess judgment against the Borrower in favor of the Bank, for the amount
then appearing due together with costs of suit, and thereupon, to waive all
errors and all rights of appeal and stays of execution.

10.12. Advertising.

       The Borrower agrees that the Bank may advertise or otherwise disclose for
marketing purposes the extent and nature of the credit extended or to be
extended and other services provided to the Borrower by the Bank in connection
with or relating in any way to the Loans.

10.13. No Consequential Damages.

       No claim may be made by the Borrower, any officers, directors, or agents
against the Bank or its affiliates, directors, officers, employees, attorneys or
agents for any special, indirect, punitive, or consequential damages in respect
of any breach or wrongful conduct (whether the claim therefor is based in
contract, tort or duty imposed by law) in connection with, arising out of or in
any way related to the transactions contemplated and relationship established by
this Agreement, or any act, omission or event occurring in connection therewith,
and the Borrower hereby waives, releases and agrees not to sue upon any such
claim for any such damages, whether or not accrued and whether or not known or
suspected to exist in its favor.

10.14. Indemnity.

                                      -34-
<PAGE>

     The Borrower shall indemnify the Bank from and against any and all
liabilities, obligations, losses, damages, penalties, actions, judgments, suits,
costs, expenses and disbursements of any kind or nature whatsoever (including,
without limitation, fees and disbursements of counsel) which may be imposed on,
incurred by, or asserted against the Bank in any litigation, proceeding or
investigation instituted or conducted by any governmental agency or
instrumentality or any other person or entity with respect to any aspect of, or
any transaction contemplated by, or referred to in, or any matter related to,
this Agreement, whether or not the Bank is a party thereto, except to the extent
that any of the foregoing arises out of the willful misconduct of the Bank, as
determined in a final, non-appealable judgment by a court of competent
jurisdiction.  The indemnity provided for in this paragraph shall survive the
termination of this Agreement and the indefeasible payment in full of all
Obligations.

11.  Definitions

11.1.  Uniform Commercial Code Terms.

     All terms defined in the Uniform Commercial Code as adopted in the State of
Ohio shall have the meanings given therein unless otherwise defined herein.

11.2.  Accounting Terms.
       ----------------

     As used in this Agreement, and any promissory notes, certificates, reports
or other documents made or delivered pursuant hereto, accounting terms not
defined in this Agreement shall have the respective meanings given to such terms
under GAAP.  "GAAP" means generally accepted accounting principles consistently
applied set forth in the opinions and pronouncements of the Accounting
Principles Board, the American Institute of Certified Public Accountants and the
Financial Accounting Standards Board as in effect on the date hereof.

11.3.  Other Definitional Provisions.
       -----------------------------

     (a) The words "hereof," "herein," and "hereunder," and words of similar
import when used in this Agreement shall refer to this Agreement as a whole and
not to any particular provision of this Agreement;

     (b) Whenever required by the context of this Agreement, the promissory
notes or other loan documents executed in connection herewith, the singular
shall include the plural, and vice versa and the masculine and feminine genders
shall include the neuter gender and vice versa.

     Each of the parties has signed this Agreement as of the date set forth in
the preamble above.

                                     -35-
<PAGE>

--------------------------------------------------------------------------------
WARNING--BY SIGNING THIS PAPER YOU GIVE UP YOUR RIGHT TO NOTICE AND COURT TRIAL.
IF YOU DO NOT PAY ON TIME A COURT JUDGMENT MAY BE TAKEN AGAINST YOU WITHOUT YOUR
PRIOR KNOWLEDGE AND THE POWERS OF A COURT CAN BE USED TO COLLECT FROM YOU
REGARDLESS OF ANY CLAIMS YOU MAY HAVE AGAINST THE CREDITOR WHETHER FOR RETURNED
GOODS, FAULTY GOODS, FAILURE ON HIS PART TO COMPLY WITH THE AGREEMENT, OR ANY
OTHER CAUSE.
--------------------------------------------------------------------------------

                             PECO II, INC.

                             By    /s/ Matthew P. Smith
                                 -----------------------------------------------
                             Its   President and Chief Executive Officer
                                 -----------------------------------------------

                             By    /s/ Sandra A. Frankhouse
                                 -----------------------------------------------
                             Its   Vice President of Finance and Treasurer
                                 -----------------------------------------------

                             THE HUNTINGTON NATIONAL BANK

                             By    /s/ Glenn W. McClelland
                                 -----------------------------------------------
                             Its   Vice President
                                 -----------------------------------------------

                                     -36-
<PAGE>

                                   EXHIBIT A-1

                          THE HUNTINGTON NATIONAL BANK
                       Amended and Restated Revolving Note

<TABLE>
=======================================================================================
<S>                                   <C>           <C>                     <C>
City Office                           Division      Branch                  [X] Secured
            -------------------------          ----        ----------------

Account No.                           Note No.                            [ ] Unsecured
            -------------------------          --------------------------

Account Name     PECO II, Inc.
             --------------------------------------------------------------------------

[X] Corporation            [ ] Partnership           [ ] Individual/Proprietorship

[ ] Other
         ------------------------------------------------------------------------------
=======================================================================================
</TABLE>

$10,000,000.00                  Galion, Ohio                   October 22, 1999

     FOR VALUE RECEIVED, the undersigned promises to pay to the order of THE
HUNTINGTON NATIONAL BANK (hereinafter called the "Bank," which term shall
include any holder hereof) at such place as the Bank may designate or, in the
absence of such designation, at any of the Bank's offices, the sum of Ten
Million Dollars ($10,000,000.00) or so much thereof as shall have been advanced
by the Bank at any time and not thereafter repaid (hereinafter referred to as
"Principal Sum") together with interest as hereinafter provided and payable at
the time and in the manner hereinafter provided. The proceeds of the loan
evidenced hereby may be advanced, repaid and readvanced in partial amounts
during the term of this revolving note (this "Note") and prior to maturity. Each
such advance shall be made to the undersigned upon receipt by the Bank of the
undersigned's application therefor and disbursement instructions, which shall be
in such form as the Bank shall from time to time prescribe. The Bank shall be
entitled to rely on any oral or telephonic communication requesting an advance
and/or providing disbursement instructions hereunder, which shall be received by
it in good faith from anyone reasonably believed by the Bank to be the
undersigned, or the undersigned's authorized agent. The undersigned agrees that
all advances made by the Bank will be evidenced by entries made by the Bank into
its electronic data processing system and/or internal memoranda maintained by
the Bank. The undersigned further agrees that the sum or sums shown on the most
recent printout from the Bank's electronic data processing system and/or on such
memoranda shall be rebuttably presumptive evidence of the amount of the
Principal Sum and of the amount of any accrued interest.

     This Note is executed and the advances contemplated hereunder are to be
made pursuant to a Second Amended and Restated Loan and Security Agreement by
and between the undersigned and the Bank dated October 22, 1999 (as amended,
restated, modified or otherwise supplemented from time to time, herein the "Loan
Agreement"), to which reference is hereby made for a more complete statement of
the terms and conditions contained therein. Terms
<PAGE>

defined in the Loan Agreement and not otherwise defined herein are used herein
with the meanings ascribed to such terms in the Loan Agreement.

     This Note is given in substitution for, and replacement of, that certain
Revolving Note dated as of May 15, 1998 in the original principal sum of
$4,000,000.00 (the "1998 Note") that was modified by a certain Note Modification
Agreement - Revolving Note dated as of May 25, 1999, pursuant to which the
maximum principal amount that could be advanced under the 1998 Note was
increased to $6,000,000.00, and is not a novation thereof. The 1998 Note, in
turn, was given in substitution for, and replacement of, that certain Revolving
Note dated April 24, 1995 (the "1995 Note"), in the original principal amount of
$2,500,000.00, and not as a novation thereof. The 1995 Note was given in
substitution for, and replacement of, that certain Revolving Demand Note dated
December 21, 1988, in the original principal amount of $1,000,000.00, and not as
a novation thereof.

INTEREST
--------

     Prior to maturity, interest will accrue on the unpaid balance of the
Principal Sum at a variable rate of interest per annum, as selected by the
undersigned in accordance with this Note (hereinafter called the "Contract
Rate"), which shall change in the manner set forth below, equal to:

     (1) the Prime Commercial Rate (as hereinafter defined) minus 0.50
                                                            -----
     percentage points (the "Prime Rate"); or

     (2) 2.00 percentage points in excess of the Daily LIBOR (as hereinafter
     defined).

     Initially, interest shall accrue hereunder based upon the Daily LIBOR. The
undersigned shall give the Bank written notice of each request to change the
interest index from the Daily LIBOR to the Prime Commercial Rate, or vice versa,
or to request disbursement of an advance with respect to which interest shall
accrue at a rate calculated with reference to the Daily LIBOR, no later than
three (3) Banking Days (as hereinafter defined) prior to the date of the
proposed change or the requested date of disbursement, as the case may be. All
such written notices shall be directed by the undersigned to the Bank's officer
who is handling the undersigned's obligations on behalf of the Bank and must be
received by the Bank at least three (3) Banking Days prior to the date of the
change or the requested date of disbursement.

     Subject to any maximum or minimum interest rate limitation specified herein
or by applicable law, the Contract Rate shall change automatically without
notice to the undersigned immediately on each Banking Day with each change in
the Prime Commercial Rate or in the Daily LIBOR or the Reserve Requirement, as
applicable, with any change thereto effective as of the opening of business on
the day of the change.

                                      -2-
<PAGE>

     If the obligation evidenced by this Note is not paid at maturity, whether
maturity occurs by lapse of time, demand, acceleration or otherwise, the unpaid
balance of the Principal Sum and any unpaid interest shall, thereafter until
paid, bear interest at a rate equal to 2.00 percentage points in excess of the
Contract Rate.

     As used herein, "Prime Commercial Rate" shall mean the rate established by
the Bank from time to time based on its consideration of economic, money market,
business and competitive factors, and it is not necessarily the Bank's most
favored rate.

     As used herein, "Daily LIBOR" shall mean the rate obtained by dividing: (1)
actual or estimated per annum rate, or the arithmetic mean of the per annum
rates, of interest for deposits in U.S. dollars for one (1) month periods, as
offered and determined by the Bank in its sole discretion based upon information
which appears on page LIBOR01, captioned British Bankers Assoc. Interest
Settlement Rates, of the Reuters America Network, a service of Reuters America
Inc. (or such other page that may replace that page on that service for the
purpose of displaying London interbank offered rates; or, if such service ceases
to be available, such other reasonably comparable money rate service as the Bank
may select) or upon information obtained from any other reasonable procedure, on
each date the Daily LIBOR is determined; by (2) a percentage (the "Reserve
Requirement") equal to one hundred percent minus the stated maximum rate
(expressed as a percentage), if any, of all reserve requirements (including,
without limitation, any marginal, emergency, supplemental, special or other
reserves) that is specified on each date the Daily LIBOR is determined by the
Board of Governors of the Federal Reserve System (or any successor agency
thereto) for determining the maximum reserve requirement with respect to
eurocurrency funding (currently referred to as "Eurocurrency liabilities" in
Regulation D of such Board) maintained by a member bank of such System, or any
other regulations or any governmental authority having jurisdiction with respect
thereto, all as conclusively determined by the Bank, absent manifest error, such
sum to be rounded up, if necessary, to the nearest whole multiple of
one-sixteenth of one percent (1/16 of 1.0%) per annum.

     As used herein, "Banking Day" shall mean any day other than a Saturday or a
Sunday on which banks are open for business in Columbus, Ohio, and on which
banks in London, England, settle payments.

     All interest shall be calculated on the basis of a 360 day year for the
actual number of days the Principal Sum or any part thereof remains unpaid.
There shall be no penalty for prepayment. The amount of any payment shall first
be applied to the payment of any interest which is due.

     In the event that the Bank reasonably determines that by reason of (1) any
change arising after the date of this Note affecting the interbank eurocurrency
market or affecting the position of the Bank with respect to such market,
adequate and fair means do not exist for ascertaining the applicable interest
rates by reference to which the Daily LIBOR then being determined is to be
fixed, (2) any change arising after the date of this Note in any applicable law
or governmental rule, regulation or order (or any interpretation thereof,
including the introduction of any new law

                                      -3-
<PAGE>

or governmental rule, regulation or order), or (3) any other circumstance
affecting the Bank or the interbank market (such as, but not limited to,
official reserve requirements required by Regulation D of the Board of Governors
of the Federal Reserve System), the Daily LIBOR plus the applicable spread shall
not represent the effective pricing to the Bank of accruing interest based upon
the Daily LIBOR, then, and in any such event, interest shall accrue hereunder as
of the effective date of any such determination at a rate calculated with
reference to the Prime Commercial Rate (as set forth above) and the ability of
the undersigned to request that interest accrue hereunder based upon the Daily
LIBOR shall be suspended until the Bank shall notify the undersigned that the
circumstances causing such suspension no longer exist.

     In the event that on any date the Bank shall have reasonably determined
that accruing interest hereunder based upon the Daily LIBOR has become unlawful
by compliance by the Bank in good faith with any law, governmental rule,
regulation or order, then, and in any such event, the Bank shall promptly give
notice thereof to the undersigned. In such case, the ability of the undersigned
to request that interest accrue hereunder based upon the Daily LIBOR shall be
terminated and, when required by law, interest will accrue hereunder based upon
the Prime Commercial Rate.

     If, due to (1) the introduction of or any change in or in the
interpretation of any law or regulation, (2) the compliance with any guideline
or request from any central bank or other public authority (whether or not
having the force of law), or (3) the failure of the undersigned to pay any
amount when required by the terms of this Note, there shall be any loss or
increase in the cost to the Bank of accruing interest hereunder based upon the
Daily LIBOR, if applicable, then the undersigned agree that the undersigned
shall, from time to time, upon demand by the Bank, pay to the Bank additional
amounts sufficient to compensate the Bank for such loss or increased cost. A
certificate as to the amount of such loss or increase cost, submitted to the
undersigned by the Bank, shall be conclusive evidence, absent manifest error, of
the correctness of such amount.

MANNER OF PAYMENT
-----------------

     The Principal Sum shall be due and payable on April 30, 2001, and at
maturity, whether by demand, acceleration or otherwise. Accrued interest shall
be due and payable monthly beginning on October 15, 1999, and continuing on the
15th day of each month thereafter, and at maturity, whether by demand,
acceleration or otherwise.

LATE CHARGE
-----------

     Any installment or other payment not made within 10 days of the date such
payment or installment is due shall be subject to a late charge equal to 5% of
the amount of the installment or payment.

SECURITY
--------

     This Note is secured by the security interests, assignments, and mortgages
granted and/or referenced in the Loan Agreement.

                                      -4-
<PAGE>

DEFAULT
-------

     Upon the occurrence of any of the following events:

          (a) the undersigned fails to make any payment of interest or of the
     Principal Sum on or before the date such payment is due;

          (b) an "Event of Default" under the Loan Agreement shall have
     occurred;

then the Bank may, at its option, without notice or demand, accelerate the
maturity of the obligations evidenced hereby, which obligations shall become
immediately due and payable. In the event the Bank shall institute any action
for the enforcement or collection of the obligations evidenced hereby, the
undersigned agrees to pay all costs and expenses of such action, including
reasonable attorneys' fees, to the extent permitted by law.

GENERAL PROVISIONS
------------------

     The undersigned, and any indorser, surety, or guarantor, hereby severally
waive presentment, notice of dishonor, protest, notice of protest, and diligence
in bringing suit against any party hereto, and consent that, without discharging
any of them, the time of payment may be extended an unlimited number of times
before or after maturity without notice. The Bank shall not be required to
pursue any party hereto, including any guarantor, or to exercise any rights
against any collateral herefor before exercising any other such rights.

     No waiver of any term or condition of this Note shall be effective unless
in writing and signed by the party giving or granting the waiver. No amendment
of any term or condition of this Note shall be effective unless in writing and
signed by the undersigned and the Bank. No failure or delay on the part of the
Bank in exercising any right, power or privilege under this Note, related loan
documents or law, nor any course of dealing, shall operate as a waiver of any
such right, power or privilege or preclude any other or further exercise thereof
or of any other right, power or privilege.

     The undersigned agrees that, to the extent that the undersigned makes a
payment or payments to the Bank, or the Bank receives any proceeds of collateral
security, which payment or payments or proceeds or any part thereof are
subsequently invalidated, declared to be fraudulent or preferential, set aside
and/or required to be repaid to any of the undersigned, its estate, trustee,
receiver or any other party, including without limitation any guarantor, under
any bankruptcy or insolvency law, or under any other state or federal law,
common law or equitable cause, then to the extent of such payment or repayment,
the obligations under this Note, or the part thereof which has been paid,
reduced or satisfied by such amount, shall be reinstated and continued in full
force and effect as of the date such initial payment, reduction or satisfaction
occurred.

                                      -5-
<PAGE>

     The obligations evidenced hereby may from time to time be evidenced by
another note or notes given in substitution, renewal or extension hereof. Any
security interest or mortgage which secures the obligations evidenced hereby
shall remain in full force and effect notwithstanding any such substitution,
renewal, or extension.

     The captions used herein are for references only and shall not be deemed a
part of this Note. If any of the terms or provisions of this Note shall be
deemed unenforceable, the enforceability of the remaining terms and provisions
shall not be affected. This Note shall be governed by and construed in
accordance with the law of the State of Ohio, without regard to the conflicts of
law principles thereof.

WAIVER OF RIGHT TO TRIAL BY JURY
--------------------------------

     THE UNDERSIGNED HEREBY EXPRESSLY WAIVES ANY RIGHT TO TRIAL BY JURY OF ANY
CLAIM, DEMAND, ACTION OR CAUSE OF ACTION (1) ARISING UNDER THIS NOTE OR ANY
OTHER INSTRUMENT, DOCUMENT OR AGREEMENT EXECUTED OR DELIVERED IN CONNECTION
HEREWITH, OR (2) IN ANY WAY CONNECTED WITH OR RELATED OR INCIDENTAL TO THE
DEALINGS OF THE UNDERSIGNED OR THE BANK WITH RESPECT TO THIS NOTE 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
THE UNDERSIGNED HEREBY AGREES AND CONSENTS THAT ANY SUCH CLAIM, DEMAND, ACTION
OR CAUSE OF ACTION SHALL BE DECIDED BY COURT TRIAL WITHOUT A JURY, AND THAT THE
UNDERSIGNED OR THE BANK MAY FILE AN ORIGINAL COUNTERPART OR A COPY OF THIS
SECTION WITH ANY COURT AS WRITTEN EVIDENCE OF THE CONSENT OF THE UNDERSIGNED TO
THE WAIVER OF THE RIGHT OF THE UNDERSIGNED TO TRIAL BY JURY.

WARRANT OF ATTORNEY
-------------------

     The undersigned authorizes any attorney at law to appear in any Court of
Record in the State of Ohio or in any state or territory of the United States
after the above indebtedness becomes due, whether by acceleration or otherwise,
to waive the issuing and service of process, and to confess judgment against the
undersigned in favor of the Bank for the amount then appearing due together with
costs of suit, and thereupon to waive all errors and all rights of appeal and
stays of execution.

                                      -6-
<PAGE>

--------------------------------------------------------------------------------
WARNING--BY SIGNING THIS PAPER YOU GIVE UP YOUR RIGHT TO NOTICE AND COURT TRIAL.
IF YOU DO NOT PAY ON TIME A COURT JUDGMENT MAY BE TAKEN AGAINST YOU WITHOUT YOUR
PRIOR KNOWLEDGE AND THE POWERS OF A COURT CAN BE USED TO COLLECT FROM YOU
REGARDLESS OF ANY CLAIMS YOU MAY HAVE AGAINST THE CREDITOR WHETHER FOR RETURNED
GOODS, FAULTY GOODS, FAILURE ON HIS PART TO COMPLY WITH THE AGREEMENT, OR ANY
OTHER CAUSE.
--------------------------------------------------------------------------------

                                       PECO II, INC.

                                       By:
                                          --------------------------------------
                                       Its:
                                           -------------------------------------

                                       By:
                                          --------------------------------------
                                       Its:
                                           -------------------------------------

COLUMBUS/750681 v.03

                                      -7-
<PAGE>
                                  EXHIBIT A-2

                          THE HUNTINGTON NATIONAL BANK
                              COMMERCIAL LOAN NOTE
                                Business Purpose

===============================================================================

City Office _____________ Division ______________ Branch __________ [X] Secured

Account No. ____________________ Note No. _______________________ [ ] Unsecured

Account Name     PECO II, Inc.
            ------------------------------------------------------------------
[x] Corporation           [ ] Partnership         [ ] Individual/Proprietorship

[ ] Other____________________________________________________________________

===============================================================================
$1,215,000.00                      Galion, Ohio                    May 15, 1998

     FOR VALUE RECEIVED, the undersigned promises to pay to the order of THE
HUNTINGTON NATIONAL BANK (hereinafter called the "Bank," which term shall
include any holder hereof), at such place as the Bank may designate or, in the
absence of such designation, at any of the Bank's offices, the sum of One
Million Two Hundred Fifteen Thousand Dollars ($1,215,000.00) (hereinafter called
the "Principal Sum"), together with interest as hereinafter provided. The
undersigned promises to pay the Principal Sum and the interest thereon at the
time and in the manner hereinafter provided in this note (this "Note").

     This Note is executed and the advances contemplated hereunder are to be
made pursuant to an Amended and Restated Loan and Security Agreement by and
between the undersigned and the Bank dated May 15, 1998 (as amended, restated,
modified or otherwise supplemented from time to time, herein the "Loan
Agreement"), to which reference is hereby made for a more complete statement of
the terms and conditions contained therein. Terms defined in the Loan Agreement
and not otherwise defined herein are used herein with the meanings ascribed to
such terms in the Loan Agreement.

INTEREST
--------

     Prior to maturity, interest will accrue on the unpaid balance of the
Principal Sum at a variable rate of interest per annum, as selected by the
undersigned in accordance with this Note (hereinafter called the "Contract
Rate"), which shall change in the manner set forth below, equal to:
<PAGE>

     (1) the Prime Commercial Rate (as hereinafter defined) minus 0.50
                                                            -----
percentage points; or

     (2) 2.25 percentage points in excess of the Daily Fluctuating LIBO Rate (as
hereinafter defined).

     Initially, interest shall accrue hereunder based upon [ ] the Prime
Commercial Rate or [X] the Daily Fluctuating LIBO Rate. The undersigned shall
give the Bank written notice of each request to change the interest index from
the Daily Fluctuating LIBO Rate to the Prime Commercial Rate, or vice versa, no
later than 3 Banking Days (as hereinafter defined) prior to the date of the
proposed change. All such written notices shall be directed by the undersigned
to the Bank's officer who is handling the undersigned's obligations on behalf of
the Bank and must be received by the Bank at least 3 Banking Days prior to the
date of the change.

     Subject to any maximum or minimum interest rate limitation specified herein
or by applicable law, the Contract Rate shall change automatically without
notice to the undersigned immediately on each Banking Day with each change in
the Prime Commercial Rate or in the Daily Fluctuating LIBO Rate or the Reserve
Requirement, as applicable, with any change thereto effective as of the opening
of business on the day of the change.

     If the obligation evidenced by this Note is not paid at maturity, whether
maturity occurs by lapse of time, demand, acceleration or otherwise, the unpaid
balance of the Principal Sum and any unpaid interest shall, thereafter until
paid, bear interest at a rate equal to 2.00 percentage points in excess of the
Contract Rate.

     As used herein, "Prime Commercial Rate" shall mean the rate established by
the Bank from time to time based on its consideration of economic, money market,
business and competitive factors, and it is not necessarily the Bank's most
favored rate.

     As used herein, "Daily Fluctuating LIBO Rate" shall mean the rate obtained
by dividing: (1) actual or estimated per annum rate, or the arithmetic mean of
the per annum rates, of interest for deposits in U.S. dollars for one (1) month
periods, as offered and determined by the Bank in its sole discretion based upon
information which appears on page 3750, captioned British Bankers Assoc.
Interest Settlement Rates, of Telerate, a service of Telerate Systems
Incorporated (or such other page that may replace that page on that service for
the purpose of displaying LIBO rates; or, if such service ceases to be
available, such other reasonably comparable money rate service as the Bank may
select) or upon information obtained from any other reasonable procedure, on
each date the Daily Fluctuating LIBO Rate is determined; by (2) a percentage
(the "Reserve Requirement") equal to one hundred percent minus the stated
maximum rate (expressed as a percentage), if any, of all reserve requirements
(including, without limitation, any marginal, emergency, supplemental, special
or other reserves) that is specified on each date the Daily Fluctuating LIBO
Rate is determined by the Board of Governors of the Federal Reserve System (or
any successor agency thereto) for determining the maximum reserve requirement
with respect to eurocurrency funding (currently referred to as "Eurocurrency
liabilities" in Regulation D of such Board) maintained by a member bank of such
System, or any other regulations or any governmental authority having

                                      -2-
<PAGE>

jurisdiction with respect thereto, all as conclusively determined by the Bank,
absent manifest error, such sum to be rounded up, if necessary, to the nearest
whole multiple of one-sixteenth of one percent (1/16 of 1.0%) per annum.

     As used herein, Banking Day shall mean any day other than a Saturday or a
Sunday on which banks are open for business in Columbus, Ohio, and on which
banks in London, England, settle payments.

     All interest shall be calculated on the basis of a 360 day year for the
actual number of days the Principal Sum or any part thereof remains unpaid.
There shall be no penalty for prepayment. The amount of any payment shall first
be applied to the payment of any interest which is due.

     In the event that the Bank reasonably determines that by reason of (1) any
change arising after the date of this Note affecting the interbank eurocurrency
market or affecting the position of the Bank with respect to such market,
adequate and fair means do not exist for ascertaining the applicable interest
rates by reference to which the Daily Fluctuating LIBO Rate then being
determined is to be fixed, (2) any change arising after the date of this Note in
any applicable law or governmental rule, regulation or order (or any
interpretation thereof, including the introduction of any new law or
governmental rule, regulation or order), or (3) any other circumstance affecting
the Bank or the interbank market (such as, but not limited to, official reserve
requirements required by Regulation D of the Board of Governors of the Federal
Reserve System), the Daily Fluctuating LIBO Rate plus the applicable spread
shall not represent the effective pricing to the Bank of accruing interest based
upon the Daily Fluctuating LIBO Rate, then, and in any such event, interest
shall accrue hereunder as of the effective date of any such determination at a
rate calculated with reference to the Prime Commercial Rate (as set forth above)
and the ability of the undersigned to request that interest accrue hereunder
based upon the Daily Fluctuating LIBO Rate shall be suspended until the Bank
shall notify the undersigned that the circumstances causing such suspension no
longer exist.

     In the event that on any date the Bank shall have reasonably determined
that accruing interest hereunder based upon the Daily Fluctuating LIBO Rate has
become unlawful by compliance by the Bank in good faith with any law,
governmental rule, regulation or order, then, and in any such event, the Bank
shall promptly give notice thereof to the undersigned. In such case, the ability
of the undersigned to request that interest accrue hereunder based upon the
Daily Fluctuating LIBO Rate shall be terminated and, when required by law,
interest will accrue hereunder based upon the Prime Commercial Rate.

     If, due to (1) the introduction of or any change in or in the
interpretation of any law or regulation, (2) the compliance with any guideline
or request from any central bank or other public authority (whether or not
having the force of law), or (3) the failure of the undersigned to pay any
amount when required by the terms of this Note, there shall be any loss or
increase in the cost to the Bank of accruing interest hereunder based upon the
Daily Fluctuating LIBO Rate, if applicable, then the undersigned agree that the
undersigned shall, from time to time, upon demand by the Bank, pay to the Bank
additional amounts sufficient to compensate the Bank for such loss or increased
cost. A certificate as to the amount of such loss or increase cost, submitted to
the

                                      -3-
<PAGE>

undersigned by the Bank, shall be conclusive evidence, absent manifest error, of
the correctness of such amount.

MANNER OF PAYMENT
-----------------

     The Principal Sum shall be due and payable in sixty (60) consecutive
monthly installments, beginning on June 30, 1998, and continuing on the last day
of each month thereafter, and at maturity, whether by demand, acceleration or
otherwise. Each installment of Principal Sum shall be in the amount of
$20,250.00 except the final installment shall be for the unpaid balance. Accrued
interest shall be payable on the same dates as installments of the Principal
Sum.

LATE CHARGE
-----------

     Any installment or other payment not made within 10 days of the date such
payment or installment is due shall be subject to a late charge equal to 5% of
the amount of the installment or payment.

SECURITY
--------

     This Note is secured by the security interests, assignments, and mortgages
granted and/or referenced in the Loan Agreement.

DEFAULT
-------

     Upon the occurrence of any of the following events:

     (a)  the undersigned fails to make any payment of interest or of the
          Principal Sum on or before the date such payment is due;

     (b)  an "Event of Default" under the Loan Agreement shall have occurred;

then the Bank may, at its option, without notice or demand, accelerate the
maturity of the obligations evidenced hereby, which obligations shall become
immediately due and payable. In the event the Bank shall institute any action
for the enforcement or collection of the obligations evidenced hereby, the
undersigned agrees to pay all costs and expenses of such action, including
reasonable attorneys' fees, to the extent permitted by law.

GENERAL PROVISIONS
------------------

     The undersigned, and any indorser, surety, or guarantor, hereby severally
waive presentment, notice of dishonor, protest, notice of protest, and diligence
in bringing suit against any party hereto, and consent that, without discharging
any of them, the time of payment may be extended an unlimited number of times
before or after maturity without notice. The Bank shall not be required to
pursue any party hereto, including any guarantor, or to exercise any rights
against any collateral herefor before exercising any other such rights.

                                      -4-
<PAGE>

     No waiver of any term or condition of this Note shall be effective unless
in writing and signed by the party giving or granting the waiver. No amendment
of any term or condition of this Note shall be effective unless in writing and
signed by the undersigned and the Bank. No failure or delay on the part of the
Bank in exercising any right, power or privilege under this Note, related loan
documents or law, nor any course of dealing, shall operate as a waiver of any
such right, power or privilege or preclude any other or further exercise thereof
or of any other right, power or privilege.

     The undersigned agrees that, to the extent that the undersigned makes a
payment or payments to the Bank, or the Bank receives any proceeds of collateral
security, which payment or payments or proceeds or any part thereof are
subsequently invalidated, declared to be fraudulent or preferential, set aside
and/or required to be repaid to any of the undersigned, its estate, trustee,
receiver or any other party, including without limitation any guarantor, under
any bankruptcy or insolvency law, or under any other state or federal law,
common law or equitable cause, then to the extent of such payment or repayment,
the obligations under this Note, or the part thereof which has been paid,
reduced or satisfied by such amount, shall be reinstated and continued in full
force and effect as of the date such initial payment, reduction or satisfaction
occurred.

     The obligations evidenced hereby may from time to time be evidenced by
another note or notes given in substitution, renewal or extension hereof. Any
security interest or mortgage which secures the obligations evidenced hereby
shall remain in full force and effect notwithstanding any such substitution,
renewal, or extension.

     The captions used herein are for reference only and shall not be deemed a
part of this Note. If any of the terms or provisions of this Note shall be
deemed unenforceable, the enforceability of the remaining terms and provisions
shall not be affected. This Note shall be governed by and construed in
accordance with the law of the State of Ohio.

WAIVER OF RIGHT TO TRIAL BY JURY
--------------------------------

     THE UNDERSIGNED HEREBY EXPRESSLY WAIVES ANY RIGHT TO TRIAL BY JURY OF ANY
CLAIM, DEMAND, ACTION OR CAUSE OF ACTION (1) ARISING UNDER THIS NOTE OR ANY
OTHER INSTRUMENT, DOCUMENT OR AGREEMENT EXECUTED OR DELIVERED IN CONNECTION
HEREWITH, OR (2) IN ANY WAY CONNECTED WITH OR RELATED OR INCIDENTAL TO THE
DEALINGS OF THE UNDERSIGNED OR THE BANK WITH RESPECT TO THIS NOTE 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
THE UNDERSIGNED HEREBY AGREES AND CONSENTS THAT ANY SUCH CLAIM, DEMAND, ACTION
OR CAUSE OF ACTION SHALL BE DECIDED BY COURT TRIAL WITHOUT A JURY, AND THAT THE
UNDERSIGNED OR THE BANK MAY FILE AN ORIGINAL COUNTERPART OR A COPY OF THIS
SECTION WITH ANY COURT AS WRITTEN EVIDENCE OF THE

                                      -5-
<PAGE>

CONSENT OF THE UNDERSIGNED TO THE WAIVER OF THE RIGHT OF THE UNDERSIGNED TO
TRIAL BY JURY.

WARRANT OF ATTORNEY
-------------------

     The undersigned authorizes any attorney at law to appear in any Court of
Record in the State of Ohio or in any other state or territory of the United
States after the above indebtedness becomes due, whether by acceleration or
otherwise, to waive the issuing and service of process, and to confess judgment
against the undersigned in favor of the Bank for the amount then appearing due
together with costs of suit, and thereupon to waive all errors and all rights of
appeal and stays of execution.

--------------------------------------------------------------------------------
     WARNING--BY SIGNING THIS PAPER YOU GIVE UP YOUR RIGHT TO NOTICE AND COURT
TRIAL. IF YOU DO NOT PAY ON TIME A COURT JUDGMENT MAY BE TAKEN AGAINST YOU
WITHOUT YOUR PRIOR KNOWLEDGE AND THE POWERS OF A COURT CAN BE USED TO COLLECT
FROM YOU REGARDLESS OF ANY CLAIMS YOU MAY HAVE AGAINST THE CREDITOR WHETHER FOR
RETURNED GOODS, FAULTY GOODS, FAILURE ON HIS PART TO COMPLY WITH THE AGREEMENT,
OR ANY OTHER CAUSE.
--------------------------------------------------------------------------------

                                       Borrower:

                                       PECO II, Inc.

                                       By:
                                          --------------------------------------

                                       Its:
                                           -------------------------------------

                                      -6-
<PAGE>

                                   EXHIBIT A-3

                          THE HUNTINGTON NATIONAL BANK
                                   CAPEX NOTE
                                Business Purpose

<TABLE>
=================================================================================
<S>                      <C>                   <C>                 <C>
City Office              Division              Branch              [X] Secured
            ------------          ------------        ------------

Account No.                        Note No.                        [ ] Unsecured
            ----------------------          ----------------------

Account Name     PECO II, Inc.
             --------------------------------------------------------------------

[X] Corporation           [ ] Partnership           [ ] Individual/Proprietorship

[ ] Other
          -----------------------------------------------------------------------
=================================================================================
</TABLE>

$5,000,000.00                  Galion, Ohio                  October 22, 1999

     FOR VALUE RECEIVED, the undersigned promises to pay to the order of THE
HUNTINGTON NATIONAL BANK (hereinafter called the "Bank," which term shall
include any holder hereof), at such place as the Bank may designate or, in the
absence of such designation, at any of the Bank's offices, the sum of Five
Million Dollars ($5,000,000.00) (hereinafter referred to as the "Principal
Sum"), together with interest as hereinafter provided. The undersigned promises
to pay the Principal Sum and the interest thereon at the time and in the manner
hereinafter provided in this note (this "Note").

     This Note is executed and the advances contemplated hereunder are to be
made pursuant to a Second Amended and Restated Loan and Security Agreement by
and between the undersigned and the Bank dated October 22, 1999 (as amended,
restated, modified or otherwise supplemented from time to time, herein the "Loan
Agreement"), to which reference is hereby made for a more complete statement of
the terms and conditions contained therein. Terms defined in the Loan Agreement
and not otherwise defined herein are used herein with the meanings ascribed to
such terms in the Loan Agreement.

     This Note is given in substitution for, and replacement of, that certain
Draw/Time Note dated as of May 15, 1998 in the original principal sum of
$2,500,000.00 (the "Original Note") that was modified by a certain Note
Modification Agreement - Draw/Time Note dated as of October 9, 1998, pursuant to
which the maximum principal amount that could be advanced under the Original
Note was increased to $5,000,000.00, and is not a novation thereof.
<PAGE>

INTEREST
--------

     Prior to maturity, interest will accrue on the unpaid balance of the
Principal Sum at a variable rate of interest per annum, as selected by the
undersigned in accordance with this Note (hereinafter called the "Contract
Rate"), which shall change in the manner set forth below, equal to:

     (1) the Prime Commercial Rate (as hereinafter defined) minus 0.50
     percentage points (the "Prime Rate"); or

     (2) 2.00 percentage points in excess of the Daily LIBOR (as hereinafter
     defined).

     Initially, interest shall accrue hereunder based upon the Daily LIBOR. The
undersigned shall give the Bank written notice of each request to change the
interest index from the Daily LIBOR to the Prime Commercial Rate, or vice versa,
or to request disbursement of an advance with respect to which interest shall
accrue at a rate calculated with reference to the Daily LIBOR, no later than
three (3) Banking Days (as hereinafter defined) prior to the date of the
proposed change or the requested date of disbursement, as the case may be. All
such written notices shall be directed by the undersigned to the Bank's officer
who is handling the undersigned's obligations on behalf of the Bank and must be
received by the Bank at least three (3) Banking Days prior to the date of the
change or the requested date of disbursement.

     Subject to any maximum or minimum interest rate limitation specified herein
or by applicable law, the Contract Rate shall change automatically without
notice to the undersigned immediately on each Banking Day with each change in
the Prime Commercial Rate or in the Daily LIBOR or the Reserve Requirement, as
applicable, with any change thereto effective as of the opening of business on
the day of the change.

     If the obligation evidenced by this Note is not paid at maturity, whether
maturity occurs by lapse of time, demand, acceleration or otherwise, the unpaid
balance of the Principal Sum and any unpaid interest shall, thereafter until
paid, bear interest at a rate equal to 2.00 percentage points in excess of the
Contract Rate.

     As used herein, "Prime Commercial Rate" shall mean the rate established by
the Bank from time to time based on its consideration of economic, money market,
business and competitive factors, and it is not necessarily the Bank's most
favored rate.

     As used herein, "Daily LIBOR" shall mean the rate obtained by dividing: (1)
actual or estimated per annum rate, or the arithmetic mean of the per annum
rates, of interest for deposits in U.S. dollars for one (1) month periods, as
offered and determined by the Bank in its sole discretion based upon information
which appears on page LIBOR01, captioned British Bankers Assoc. Interest
Settlement Rates, of the Reuters America Network, a service of Reuters America
Inc. (or such other page that may replace that page on that service for the
purpose of displaying London interbank offered rates; or, if such service ceases
to be available, such other reasonably

                                      -2-
<PAGE>

comparable money rate service as the Bank may select) or upon information
obtained from any other reasonable procedure, on each date the Daily LIBOR is
determined; by (2) a percentage (the "Reserve Requirement") equal to one hundred
percent minus the stated maximum rate (expressed as a percentage), if any, of
all reserve requirements (including, without limitation, any marginal,
emergency, supplemental, special or other reserves) that is specified on each
date the Daily LIBOR is determined by the Board of Governors of the Federal
Reserve System (or any successor agency thereto) for determining the maximum
reserve requirement with respect to eurocurrency funding (currently referred to
as "Eurocurrency liabilities" in Regulation D of such Board) maintained by a
member bank of such System, or any other regulations or any governmental
authority having jurisdiction with respect thereto, all as conclusively
determined by the Bank, absent manifest error, such sum to be rounded up, if
necessary, to the nearest whole multiple of one-sixteenth of one percent (1/16
of 1.0%) per annum.

     As used herein, "Banking Day" shall mean any day other than a Saturday or a
Sunday on which banks are open for business in Columbus, Ohio, and on which
banks in London, England, settle payments.

     All interest shall be calculated on the basis of a 360 day year for the
actual number of days the Principal Sum or any part thereof remains unpaid.
There shall be no penalty for prepayment. The amount of any payment shall first
be applied to the payment of any interest which is due.

     In the event that the Bank reasonably determines that by reason of (1) any
change arising after the date of this Note affecting the interbank eurocurrency
market or affecting the position of the Bank with respect to such market,
adequate and fair means do not exist for ascertaining the applicable interest
rates by reference to which the Daily LIBOR then being determined is to be
fixed, (2) any change arising after the date of this Note in any applicable law
or governmental rule, regulation or order (or any interpretation thereof,
including the introduction of any new law or governmental rule, regulation or
order), or (3) any other circumstance affecting the Bank or the interbank market
(such as, but not limited to, official reserve requirements required by
Regulation D of the Board of Governors of the Federal Reserve System), the Daily
LIBOR plus the applicable spread shall not represent the effective pricing to
the Bank of accruing interest based upon the Daily LIBOR, then, and in any such
event, interest shall accrue hereunder as of the effective date of any such
determination at a rate calculated with reference to the Prime Commercial Rate
(as set forth above) and the ability of the undersigned to request that interest
accrue hereunder based upon the Daily LIBOR shall be suspended until the Bank
shall notify the undersigned that the circumstances causing such suspension no
longer exist.

     In the event that on any date the Bank shall have reasonably determined
that accruing interest hereunder based upon the Daily LIBOR has become unlawful
by compliance by the Bank in good faith with any law, governmental rule,
regulation or order, then, and in any such event, the Bank shall promptly give
notice thereof to the undersigned. In such case, the ability of the undersigned
to request that interest accrue hereunder based upon the Daily LIBOR shall be
terminated and, when required by law, interest will accrue hereunder based upon
the Prime Commercial Rate.

                                      -3-
<PAGE>

     If, due to (1) the introduction of or any change in or in the
interpretation of any law or regulation, (2) the compliance with any guideline
or request from any central bank or other public authority (whether or not
having the force of law), or (3) the failure of the undersigned to pay any
amount when required by the terms of this Note, there shall be any loss or
increase in the cost to the Bank of accruing interest hereunder based upon the
Daily LIBOR, if applicable, then the undersigned agree that the undersigned
shall, from time to time, upon demand by the Bank, pay to the Bank additional
amounts sufficient to compensate the Bank for such loss or increased cost. A
certificate as to the amount of such loss or increase cost, submitted to the
undersigned by the Bank, shall be conclusive evidence, absent manifest error, of
the correctness of such amount.

MANNER OF PAYMENT
-----------------

     Subject to the provisions of the Loan Agreement, including without
limitation Section 3.6 thereof, the Principal Sum shall be due and payable in 60
consecutive monthly installments, beginning on November 15, 1999, and continuing
on the 15th day of each month thereafter, and at maturity whether by
acceleration or otherwise. Each installment of Principal Sum shall be in the
amount of $83,333.33, except the final installment shall be for the unpaid
balance. Accrued interest shall be payable beginning on October 15, 1999, and
continuing on the same dates as installments of the Principal Sum.

LATE CHARGE
-----------

     Any installment or other payment not made within 10 days of the date such
payment or installment is due shall be subject to a late charge equal to 5% of
the amount of the installment or payment.

SECURITY
--------

     This Note is secured by the security interests, assignments, and mortgages
granted and/or referenced in the Loan Agreement.

DEFAULT
-------

     Upon the occurrence of any of the following events:

     (a)  the undersigned fails to make any payment of interest or of the
          Principal Sum on or before the date such payment is due;

     (b)  an "Event of Default" under the Loan Agreement shall have occurred;

then the Bank may, at its option, without notice or demand, accelerate the
maturity of the obligations evidenced hereby, which obligations shall become
immediately due and payable. In the event the Bank shall institute any action
for the enforcement or collection of the obligations

                                      -4-
<PAGE>

evidenced hereby, the undersigned agrees to pay all costs and expenses of such
action, including reasonable attorneys' fees, to the extent permitted by law.

GENERAL PROVISIONS
------------------

     The undersigned, and any indorser, surety, or guarantor, hereby severally
waive presentment, notice of dishonor, protest, notice of protest, and diligence
in bringing suit against any party hereto, and consent that, without discharging
any of them, the time of payment may be extended an unlimited number of times
before or after maturity without notice. The Bank shall not be required to
pursue any party hereto, including any guarantor, or to exercise any rights
against any collateral herefor before exercising any other such rights.

     No waiver of any term or condition of this Note shall be effective unless
in writing and signed by the party giving or granting the waiver. No amendment
of any term or condition of this Note shall be effective unless in writing and
signed by the undersigned and the Bank. No failure or delay on the part of the
Bank in exercising any right, power or privilege under this Note, related loan
documents or law, nor any course of dealing, shall operate as a waiver of any
such right, power or privilege or preclude any other or further exercise thereof
or of any other right, power or privilege.

     The undersigned agrees that, to the extent that the undersigned makes a
payment or payments to the Bank, or the Bank receives any proceeds of collateral
security, which payment or payments or proceeds or any part thereof are
subsequently invalidated, declared to be fraudulent or preferential, set aside
and/or required to be repaid to any of the undersigned, its estate, trustee,
receiver or any other party, including without limitation any guarantor, under
any bankruptcy or insolvency law, or under any other state or federal law,
common law or equitable cause, then to the extent of such payment or repayment,
the obligations under this Note, or the part thereof which has been paid,
reduced or satisfied by such amount, shall be reinstated and continued in full
force and effect as of the date such initial payment, reduction or satisfaction
occurred.

     The obligations evidenced hereby may from time to time be evidenced by
another note or notes given in substitution, renewal or extension hereof. Any
security interest or mortgage which secures the obligations evidenced hereby
shall remain in full force and effect notwithstanding any such substitution,
renewal, or extension.

     The captions used herein are for reference only and shall not be deemed a
part of this Note. If any of the terms or provisions of this Note shall be
deemed unenforceable, the enforceability of the remaining terms and provisions
shall not be affected. This Note shall be governed by and construed in
accordance with the law of the State of Ohio, without regard to the conflicts of
law rules thereof.

                                      -5-
<PAGE>

WAIVER OF RIGHT TO TRIAL BY JURY
--------------------------------

     THE UNDERSIGNED HEREBY EXPRESSLY WAIVES ANY RIGHT TO TRIAL BY JURY OF ANY
CLAIM, DEMAND, ACTION OR CAUSE OF ACTION (1) ARISING UNDER THIS NOTE OR ANY
OTHER INSTRUMENT, DOCUMENT OR AGREEMENT EXECUTED OR DELIVERED IN CONNECTION
HEREWITH, OR (2) IN ANY WAY CONNECTED WITH OR RELATED OR INCIDENTAL TO THE
DEALINGS OF THE UNDERSIGNED OR THE BANK WITH RESPECT TO THIS NOTE 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
THE UNDERSIGNED HEREBY AGREES AND CONSENTS THAT ANY SUCH CLAIM, DEMAND, ACTION
OR CAUSE OF ACTION SHALL BE DECIDED BY COURT TRIAL WITHOUT A JURY, AND THAT THE
UNDERSIGNED OR THE BANK MAY FILE AN ORIGINAL COUNTERPART OR A COPY OF THIS
SECTION WITH ANY COURT AS WRITTEN EVIDENCE OF THE CONSENT OF THE UNDERSIGNED TO
THE WAIVER OF THE RIGHT OF THE UNDERSIGNED TO TRIAL BY JURY.

WARRANT OF ATTORNEY
-------------------

     The undersigned authorizes any attorney at law to appear in any Court of
Record in the State of Ohio or in any other state or territory of the United
States after the above indebtedness becomes due, whether by acceleration or
otherwise, to waive the issuing and service of process, and to confess judgment
against the undersigned in favor of the Bank for the amount then appearing due
together with costs of suit, and thereupon to waive all errors and all rights of
appeal and stays of execution.

                                      -6-
<PAGE>

WARNING--BY SIGNING THIS PAPER YOU GIVE UP YOUR RIGHT TO NOTICE AND COURT TRIAL.
IF YOU DO NOT PAY ON TIME A COURT JUDGMENT MAY BE TAKEN AGAINST YOU WITHOUT YOUR
PRIOR KNOWLEDGE AND THE POWERS OF A COURT CAN BE USED TO COLLECT FROM YOU
REGARDLESS OF ANY CLAIMS YOU MAY HAVE AGAINST THE CREDITOR WHETHER FOR RETURNED
GOODS, FAULTY GOODS, FAILURE ON HIS PART TO COMPLY WITH THE AGREEMENT, OR ANY
OTHER CAUSE.

                                      Borrower:

                                      PECO II, Inc.

                                      By:
                                         ---------------------------------------
                                      Its:
                                         ---------------------------------------

                                      By:
                                         ---------------------------------------
                                      Its:
                                         ---------------------------------------

                                      -7-
<PAGE>

                                   EXHIBIT A-4

                          THE HUNTINGTON NATIONAL BANK
                                    DRAW NOTE
                                Business Purpose

===============================================================================

City Office ____________ Division ____________ Branch ____________ [X] Secured

Account No. ______________________ Note No. _____________________ [ ] Unsecured

Account Name     PECO II, Inc.
             ------------------------------------------------------------------

[X] Corporation           [ ] Partnership         [ ] Individual/Proprietorship

[ ] Other ____________________________________________________________________

===============================================================================

$5,000,000.00                  Galion, Ohio                  October 22, 1999

     FOR VALUE RECEIVED, the undersigned promises to pay to the order of THE
HUNTINGTON NATIONAL BANK (hereinafter called the "Bank," which term shall
include any holder hereof), at such place as the Bank may designate or, in the
absence of such designation, at any of the Bank's offices, the sum of Five
Million Dollars ($5,000,000.00) or so much thereof as shall have been advanced
by the Bank at any time and not thereafter repaid (hereinafter referred to as
the "Principal Sum"), together with interest as hereinafter provided. The
proceeds of the loan evidenced hereby may be advanced in multiple draws during
the term of this note (this "Note") prior to April 30, 2001. Such advances shall
be made to the undersigned upon satisfaction of the conditions precedent set
forth in the Loan Agreement (as hereinafter defined) and upon receipt by the
Bank of the undersigned's application therefor and disbursement instructions,
which shall be in such form as the Bank shall from time to time prescribe. The
undersigned agrees that all advances made by the Bank will be evidenced by
entries made by the Bank into its electronic data processing system and/or
internal memoranda maintained by the Bank. The undersigned further agrees that
the sum or sums shown on the most recent printout from the Bank's electronic
data processing system or on such memoranda shall be rebuttably presumptive
evidence of the amount of the Principal Sum and of the amount of any accrued
interest. The undersigned promises to pay the Principal Sum and the interest
thereon at the time and in the manner hereinafter provided in this Note.

     This Note is executed and the advances contemplated hereunder are to be
made pursuant to a Second Amended and Restated Loan and Security Agreement by
and between the undersigned and the Bank dated October 22, 1999 (as amended,
restated, modified or otherwise supplemented from time to time, herein the "Loan
Agreement"), to which reference is hereby made for a more complete statement of
the terms and conditions contained therein. Terms
<PAGE>

defined in the Loan Agreement and not otherwise defined herein are used herein
with the meanings ascribed to such terms in the Loan Agreement.

INTEREST
--------

     Prior to maturity, interest will accrue on the unpaid balance of the
Principal Sum at a variable rate of interest per annum, as selected by the
undersigned in accordance with this Note (hereinafter called the "Contract
Rate"), which shall change in the manner set forth below, equal to:

     (1) the Prime Commercial Rate (as hereinafter defined) minus 0.50
                                                            -----
     percentage points (the "Prime Rate"); or

     (2) 2.00 percentage points in excess of the Daily LIBOR (as hereinafter
     defined).

     Initially, interest shall accrue hereunder based upon the Daily LIBOR. The
undersigned shall give the Bank written notice of each request to change the
interest index from the Daily LIBOR to the Prime Commercial Rate, or vice versa,
or to request disbursement of an advance with respect to which interest shall
accrue at a rate calculated with reference to the Daily LIBOR, no later than
three (3) Banking Days (as hereinafter defined) prior to the date of the
proposed change or the requested date of disbursement, as the case may be. All
such written notices shall be directed by the undersigned to the Bank's officer
who is handling the undersigned's obligations on behalf of the Bank and must be
received by the Bank at least three (3) Banking Days prior to the date of the
change or the requested date of disbursement.

     Subject to any maximum or minimum interest rate limitation specified herein
or by applicable law, the Contract Rate shall change automatically without
notice to the undersigned immediately on each Banking Day with each change in
the Prime Commercial Rate or in the Daily LIBOR or the Reserve Requirement, as
applicable, with any change thereto effective as of the opening of business on
the day of the change.

     Upon the occurrence of an Event of Default under the Loan Agreement, and if
the obligation evidenced by this Note is not paid at maturity, whether maturity
occurs by lapse of time, demand, acceleration or otherwise, the unpaid balance
of the Principal Sum and any unpaid interest shall, thereafter until paid, bear
interest at a rate equal to 2.00 percentage points in excess of the Contract
Rate.

     As used herein, "Prime Commercial Rate" shall mean the rate established by
the Bank from time to time based on its consideration of economic, money market,
business and competitive factors, and it is not necessarily the Bank's most
favored rate.

     As used herein, "Daily LIBOR" shall mean the rate obtained by dividing: (1)
actual or estimated per annum rate, or the arithmetic mean of the per annum
rates, of interest for deposits

                                      -2-
<PAGE>

in U.S. dollars for one (1) month periods, as offered and determined by the Bank
in its sole discretion based upon information which appears on page LIBOR01,
captioned British Bankers Assoc. Interest Settlement Rates, of the Reuters
America Network, a service of Reuters America Inc. (or such other page that may
replace that page on that service for the purpose of displaying London interbank
offered rates; or, if such service ceases to be available, such other reasonably
comparable money rate service as the Bank may select) or upon information
obtained from any other reasonable procedure, on each date the Daily LIBOR is
determined; by (2) a percentage (the "Reserve Requirement") equal to one hundred
percent minus the stated maximum rate (expressed as a percentage), if any, of
all reserve requirements (including, without limitation, any marginal,
emergency, supplemental, special or other reserves) that is specified on each
date the Daily LIBOR is determined by the Board of Governors of the Federal
Reserve System (or any successor agency thereto) for determining the maximum
reserve requirement with respect to eurocurrency funding (currently referred to
as "Eurocurrency liabilities" in Regulation D of such Board) maintained by a
member bank of such System, or any other regulations or any governmental
authority having jurisdiction with respect thereto, all as conclusively
determined by the Bank, absent manifest error, such sum to be rounded up, if
necessary, to the nearest whole multiple of one-sixteenth of one percent (1/16
of 1.0%) per annum.

     As used herein, "Banking Day" shall mean any day other than a Saturday or a
Sunday on which banks are open for business in Columbus, Ohio, and on which
banks in London, England, settle payments.

     All interest shall be calculated on the basis of a 360 day year for the
actual number of days the Principal Sum or any part thereof remains unpaid.
There shall be no penalty for prepayment. The amount of any payment shall first
be applied to the payment of any interest which is due.

     In the event that the Bank reasonably determines that by reason of (1) any
change arising after the date of this Note affecting the interbank eurocurrency
market or affecting the position of the Bank with respect to such market,
adequate and fair means do not exist for ascertaining the applicable interest
rates by reference to which the Daily LIBOR then being determined is to be
fixed, (2) any change arising after the date of this Note in any applicable law
or governmental rule, regulation or order (or any interpretation thereof,
including the introduction of any new law or governmental rule, regulation or
order), or (3) any other circumstance affecting the Bank or the interbank market
(such as, but not limited to, official reserve requirements required by
Regulation D of the Board of Governors of the Federal Reserve System), the Daily
LIBOR plus the applicable spread shall not represent the effective pricing to
the Bank of accruing interest based upon the Daily LIBOR, then, and in any such
event, interest shall accrue hereunder as of the effective date of any such
determination at a rate calculated with reference to the Prime Commercial Rate
(as set forth above) and the ability of the undersigned to request that interest
accrue hereunder based upon the Daily LIBOR shall be suspended until the Bank
shall notify the undersigned that the circumstances causing such suspension no
longer exist.

     In the event that on any date the Bank shall have reasonably determined
that accruing interest hereunder based upon the Daily LIBOR has become unlawful
by compliance by the

                                      -3-
<PAGE>

Bank in good faith with any law, governmental rule, regulation or order, then,
and in any such event, the Bank shall promptly give notice thereof to the
undersigned. In such case, the ability of the undersigned to request that
interest accrue hereunder based upon the Daily LIBOR shall be terminated and,
when required by law, interest will accrue hereunder based upon the Prime
Commercial Rate.

     If, due to (1) the introduction of or any change in or in the
interpretation of any law or regulation, (2) the compliance with any guideline
or request from any central bank or other public authority (whether or not
having the force of law), or (3) the failure of the undersigned to pay any
amount when required by the terms of this Note, there shall be any loss or
increase in the cost to the Bank of accruing interest hereunder based upon the
Daily LIBOR, if applicable, then the undersigned agree that the undersigned
shall, from time to time, upon demand by the Bank, pay to the Bank additional
amounts sufficient to compensate the Bank for such loss or increased cost. A
certificate as to the amount of such loss or increase cost, submitted to the
undersigned by the Bank, shall be conclusive evidence, absent manifest error, of
the correctness of such amount.

MANNER OF PAYMENT
-----------------

     Subject to the provisions of the Loan Agreement, including without
limitation Section 3.6 thereof, the Principal Sum shall be due and payable on
April 30, 2001, and at maturity, whether by acceleration or otherwise. Accrued
interest shall be payable monthly, beginning on November 15, 1999, and
continuing on the 15th day of each month thereafter, and at maturity, whether by
acceleration or otherwise.

LATE CHARGE
-----------

     Any installment or other payment not made within 10 days of the date such
payment or installment is due shall be subject to a late charge equal to 5% of
the amount of the installment or payment.

SECURITY
--------

     This Note is secured by the security interests, assignments, and mortgages
granted and/or referenced in the Loan Agreement.

DEFAULT
-------

     Upon the occurrence of any of the following events:

     (a)  the undersigned fails to make any payment of interest or of the
          Principal Sum on or before the date such payment is due;

     (b)  an "Event of Default" under the Loan Agreement shall have occurred;

                                      -4-
<PAGE>

then the Bank may, at its option, without notice or demand, accelerate the
maturity of the obligations evidenced hereby, which obligations shall become
immediately due and payable. In the event the Bank shall institute any action
for the enforcement or collection of the obligations evidenced hereby, the
undersigned agrees to pay all costs and expenses of such action, including
reasonable attorneys' fees, to the extent permitted by law.

GENERAL PROVISIONS
------------------

     The undersigned, and any indorser, surety, or guarantor, hereby severally
waive presentment, notice of dishonor, protest, notice of protest, and diligence
in bringing suit against any party hereto, and consent that, without discharging
any of them, the time of payment may be extended an unlimited number of times
before or after maturity without notice. The Bank shall not be required to
pursue any party hereto, including any guarantor, or to exercise any rights
against any collateral herefor before exercising any other such rights.

     No waiver of any term or condition of this Note shall be effective unless
in writing and signed by the party giving or granting the waiver. No amendment
of any term or condition of this Note shall be effective unless in writing and
signed by the undersigned and the Bank. No failure or delay on the part of the
Bank in exercising any right, power or privilege under this Note, related loan
documents or law, nor any course of dealing, shall operate as a waiver of any
such right, power or privilege or preclude any other or further exercise thereof
or of any other right, power or privilege.

     The undersigned agrees that, to the extent that the undersigned makes a
payment or payments to the Bank, or the Bank receives any proceeds of collateral
security, which payment or payments or proceeds or any part thereof are
subsequently invalidated, declared to be fraudulent or preferential, set aside
and/or required to be repaid to any of the undersigned, its estate, trustee,
receiver or any other party, including without limitation any guarantor, under
any bankruptcy or insolvency law, or under any other state or federal law,
common law or equitable cause, then to the extent of such payment or repayment,
the obligations under this Note, or the part thereof which has been paid,
reduced or satisfied by such amount, shall be reinstated and continued in full
force and effect as of the date such initial payment, reduction or satisfaction
occurred.

     The obligations evidenced hereby may from time to time be evidenced by
another note or notes given in substitution, renewal or extension hereof. Any
security interest or mortgage which secures the obligations evidenced hereby
shall remain in full force and effect notwithstanding any such substitution,
renewal, or extension.

     The captions used herein are for reference only and shall not be deemed a
part of this Note. If any of the terms or provisions of this Note shall be
deemed unenforceable, the enforceability of the remaining terms and provisions
shall not be affected. This Note shall be governed by and construed in
accordance with the law of the State of Ohio, without regard to the conflicts of
law rules thereof.

                                      -5-
<PAGE>

WAIVER OF RIGHT TO TRIAL BY JURY
--------------------------------

     THE UNDERSIGNED HEREBY EXPRESSLY WAIVES ANY RIGHT TO TRIAL BY JURY OF ANY
CLAIM, DEMAND, ACTION OR CAUSE OF ACTION (1) ARISING UNDER THIS NOTE OR ANY
OTHER INSTRUMENT, DOCUMENT OR AGREEMENT EXECUTED OR DELIVERED IN CONNECTION
HEREWITH, OR (2) IN ANY WAY CONNECTED WITH OR RELATED OR INCIDENTAL TO THE
DEALINGS OF THE UNDERSIGNED OR THE BANK WITH RESPECT TO THIS NOTE 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
THE UNDERSIGNED HEREBY AGREES AND CONSENTS THAT ANY SUCH CLAIM, DEMAND, ACTION
OR CAUSE OF ACTION SHALL BE DECIDED BY COURT TRIAL WITHOUT A JURY, AND THAT THE
UNDERSIGNED OR THE BANK MAY FILE AN ORIGINAL COUNTERPART OR A COPY OF THIS
SECTION WITH ANY COURT AS WRITTEN EVIDENCE OF THE CONSENT OF THE UNDERSIGNED TO
THE WAIVER OF THE RIGHT OF THE UNDERSIGNED TO TRIAL BY JURY.

WARRANT OF ATTORNEY
-------------------

     The undersigned authorizes any attorney at law to appear in any Court of
Record in the State of Ohio or in any other state or territory of the United
States after the above indebtedness becomes due, whether by acceleration or
otherwise, to waive the issuing and service of process, and to confess judgment
against the undersigned in favor of the Bank for the amount then appearing due
together with costs of suit, and thereupon to waive all errors and all rights of
appeal and stays of execution.
<PAGE>

--------------------------------------------------------------------------------
WARNING--BY SIGNING THIS PAPER YOU GIVE UP YOUR RIGHT TO NOTICE AND COURT TRIAL.
IF YOU DO NOT PAY ON TIME A COURT JUDGMENT MAY BE TAKEN AGAINST YOU WITHOUT YOUR
PRIOR KNOWLEDGE AND THE POWERS OF A COURT CAN BE USED TO COLLECT FROM YOU
REGARDLESS OF ANY CLAIMS YOU MAY HAVE AGAINST THE CREDITOR WHETHER FOR RETURNED
GOODS, FAULTY GOODS, FAILURE ON HIS PART TO COMPLY WITH THE AGREEMENT, OR ANY
OTHER CAUSE.
--------------------------------------------------------------------------------

                                      Borrower:

                                      PECO II, Inc.

                                      By:
                                         ---------------------------------
                                      Its:
                                          --------------------------------

                                      By:
                                         ---------------------------------
                                      Its:
                                          --------------------------------

                                      -7-
<PAGE>

                                   EXHIBIT B

                      SCHEDULE OF PERMITTED ENCUMBRANCES

<TABLE>
<CAPTION>
                                                                                                          Maximum Amount
       Secured Party                                      Description of Items                             of Obligation
       -------------                                      --------------------                             -------------
<S>                                               <C>                                                      <C>
General Electric Capital Corporation                   Copiers and Computers                                 $   20,000

First Federal Savings & Loan                      Mortgage on 1376 State Route 529,                          $1,000,000
                                                             Galion, Ohio

National City Leasing Corp.                         Office Equipment - Colorado                              $  350,000

IBM Credit Corporation                                        Computer                                       $  172,000

LCA Holding Corp.                                         Leased Equipment

The Huntington Leasing Co.                                Leased Equipment
</TABLE>
<PAGE>

                                   EXHIBIT C

                        SCHEDULE OF BUSINESS LOCATIONS

1376 State Route 529
Galion, Ohio 44833*

7060 Huntley Road
Columbus, Ohio

15 Pine Street
Nashua, New Hampshire

1706 E. Semoran Boulevard
Suite 103
Apopka, Florida 32703

10730 East Bethany Drive
Suite 309
Aurora, Colorado 80014

4811 S. 76/th/ Street
Suite 402
Greendale, Wisconsin 53220

* Chief Executive Office
<PAGE>

                                 Schedule 5.1

                   Conditions Precedent to Initial Advances

1.   Execution and delivery to the Bank of $10,000,000.00 Amended and Restated
     Revolving Note in the form of Exhibit A-1 attached hereto

2.   Execution and delivery to the Bank of $5,000,000.00 Capex Note in the form
     of Exhibit A-3 attached hereto

3.   Execution and delivery to the Bank of $5,000,000.00 Draw Note in the form
     of Exhibit A-4 attached hereto.

4.   Execution and delivery to the Bank of Open-End Mortgage, Assignments of
     Rents and Security Agreement - Fourth Amendment (Crawford County)

5.   Execution and delivery to the Bank of Open-End Mortgage, Assignment of
     Rents and Security Agreement - Third Modification Agreement (Franklin
     County)

6.   Execution and delivery to Bank of certified copy of resolutions of Board of
     Directors of Borrower

7.   Execution and delivery to Bank of Closing Certificate of Secretary

8.   Execution and delivery to Bank of UCC-1 Financing Statements

9.   Execution and delivery to the Bank by Apex Telecommunications, Inc. of
     Hypothecation Security Agreement
<PAGE>

                                 SCHEDULE 6.6

            Schedule of Litigation and Pending or Threatened Claims

                                     None
<PAGE>

                                 SCHEDULE 6.14

                       Schedule of Intellectual Property

                              ISSUED U.S. PATENTS
                              -------------------

<TABLE>
<CAPTION>
Patent No.     Serial No         Issuance Date                      Title
----------     ---------         -------------                      -----
<S>            <C>               <C>                 <C>
5,777,454      08/654,835        July 7, 1998        Back-up, Battery Management System for a DC Power
                                                     Supply

5,886,503       08/78,914       March 23, 1999       Back-up, Battery Management Apparatus for
                                                     Changing and Testing Individual Battery Cells in
                                                     a string of Battery Cells

5,933,338       09/49,874       August 3, 1999       Dual coupled Current Doubler Rectification Circuit
</TABLE>

                       PENDING U.S. PATENT APPLICATIONS
                       --------------------------------

<TABLE>
<CAPTION>
Serial No.       Filing Date       Inventors                         Title
----------       -----------       ---------                         -----
<S>              <C>                                 <C>
09/013,132       01/26/98                            A Transfer Coupled FET Drive Circuit
                                                     (1.5KVA)
</TABLE>
<PAGE>

                                 SCHEDULE 7.7

                      Schedule of Contingent Obligations

                                     None

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00010-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00010-of-00352.parquet"}]]