Document:

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                                                                   EXHIBIT 10.19

                    SUBORDINATED LOAN AND SECURITY AGREEMENT

        THIS AGREEMENT (the "Agreement"), dated as of March 23, 1999, is entered
into by and between Optical Micro-Machines, Inc., a California corporation, with
its chief executive office, and principal place of business located at 6160 Lusk
Blvd, Suite C-105, San Diego, CA 92121 (the "Borrower") and Comdisco, Inc., a
Delaware corporation, with its principal place of business located at 6111 North
River Road, Rosemont, Illinois 60018 (the "Lender" or sometimes, "Comdisco"). In
consideration of the mutual agreements contained herein, the parties hereto
agree as follows:

                                    RECITALS

        WHEREAS, Borrower has requested Lender to make available to Borrower a
loan in the aggregate principal amount of ONE MILLION DOLLARS ($1,000,000) in
minimum installments of FIVE HUNDRED THOUSAND DOLLARS ($500,000.00) each (as the
same may from time to time be amended, modified, supplemented or revised, the
"Loan"), which would be evidenced by Subordinated Promissory Note(s) executed by
Borrower substantially in the form of EXHIBIT A hereto (as the same may from
time to time be amended, modified, supplemented or restated the "Note(s)").

        WHEREAS, Lender is willing to make the Loan on the terms and conditions
set forth in this Agreement, and

        WHEREAS, Lender and Borrower agree any Loan hereunder shall be
subordinate to Senior Debt (as defined herein) to the extent set forth in the
Subordination Agreement (as defined herein).

                                    AGREEMENT

        NOW, THEREFORE, in consideration of the premises and the mutual
agreements contained herein, Borrower and Lender hereby agree as follows:

SECTION 1. DEFINITIONS

        Unless otherwise defined herein, the following capitalized terms shall
have the following meanings (such meanings being equally applicable to both the
singular and plural form of the terms defined);

        1.1 "ACCOUNT" means any "account," as such term is defined in Section
9106 of the UCC, now owned or hereafter acquired by Borrower or in which
Borrower now holds or hereafter acquires any interest and, in any event, shall
include, without limitation, all accounts receivable, book debts and other forms
of obligations (other than forms of obligations evidenced by Chattel Paper,
Documents or Instruments) now owned or hereafter received or acquired by or
belonging or owing to Borrower (including, without limitation, under any trade
name, style or division thereof) whether arising out of goods sold or services
rendered by Borrower or from any other transaction, whether or not the same
involves the sale of goods or services by Borrower (including, without
limitation, any such obligation which may be characterized as an account or
contract right under the UCC) and all of Borrower's rights in, to and under all
purchase orders or receipts now owned or hereafter acquired by it for goods or
services, and all

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of Borrower's rights to any goods represented by any of the foregoing
(including, without limitation, unpaid seller's rights of rescission, replevin,
reclamation and stoppage in transit and rights to returned, reclaimed or
repossessed goods), and all monies due or to become due to Borrower under all
purchase orders and contracts for the sale of goods or the performance of
services or both by Borrower (whether or not yet earned by performance on the
part of Borrower or in connection with any other transaction), now in existence
or hereafter occurring, including, without limitation, the right to receive the
proceeds of said purchase orders and contracts, and all collateral security and
guarantees of any kind given by any Person with respect to any of the foregoing.

        1.2 "ACCOUNT DEBTOR" means any "account debtor," as such term is defined
in Section 9105(1)(a) of the UCC.

        1.3 "ADVANCE" means each installment made by the Lender to Borrower
pursuant to the Loan to be evidenced by the Note(s) secured by the Collateral.

        1.4 "ADVANCE DATE" means the funding date of any Advance of the Loan.

        1.5. "ADVANCE REQUEST" means the request by Borrower for an Advance
under the Loan, each to be substantially in the form of EXHIBIT C attached
hereto, as submitted by Borrower to Lender from time to time.

        1.6 "CHATTEL PAPER" means any "chattel paper," as such term is defined
in Section 9105(1)(b) of the UCC, now owned or hereafter acquired by Borrower or
in which Borrower now holds or hereafter acquires any interest.

        1.7 "CLOSING DATE" means the date hereof.

        1.8 "COLLATERAL" shall have the meaning assigned to such term in Section
3 of this Agreement.

        1.9 "CONTRACTS" means all contracts, undertakings, franchise agreements
or other agreements (other than rights evidenced by Chattel Paper, Documents or
Instruments) in or under which Borrower may now or hereafter have any right,
title or interest, including, without limitation, with respect to an Account,
any agreement relating to the terms of payment or the terms of performance
thereof.

        1.10 "COPYRIGHTS" means all of the following now owned or hereafter
acquired by Borrower or in which Borrower now holds or hereafter acquires any
interest: (i) all copyrights, whether registered or unregistered, held pursuant
to the laws of the United States, any State thereof or of any other country;
(ii) registrations, applications and recordings in the United States Copyright
Office or in any similar office or agency of the United States, any state
thereof or any other country; (iii) any continuations, renewals or extensions
thereof; and (iv) any registrations to be issued in any pending applications.

        1.11 "COPYRIGHT LICENSE" means any written agreement granting any right
to use any Copyright or Copyright registration now owned or hereafter acquired
by Borrower or in which Borrower now holds or hereafter acquires any interest.

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        1.12 "DOCUMENTS" means any "documents," as such term is defined in
Section 9105(1)(f) of the UCC, now owned or hereafter acquired by Borrower or in
which Borrower now holds or hereafter acquires any interest.

        1.13 "EQUIPMENT" means any "equipment," as such term is defined in
Section 9109(2) of the UCC, now or hereafter owned or acquired by Borrower or in
which Borrower now holds or hereafter acquires any interest and any and all
additions, substitutions and replacements of any of the foregoing, wherever
located, together with all attachments, components, parts, equipment and
accessories installed thereon or affixed thereto.

        1.14 "EXCLUDED AGREEMENTS" means (i) any Warrant Agreement(s) executed
hereunder, and any other warrants (including without limitation, the warrant
agreement dated as of March 23, 1999) to acquire, or agreements governing the
rights of the holders of, any equity security of Borrower, (ii) any stock of the
Borrower issued or purchased pursuant to the Warrant Agreement, and (iii) the
Master Lease Agreement dated as of March 23, 1999 between Borrower, as lessee,
and Lender, as lessor, including, without limitation, any Equipment Schedules
and Summary Equipment Schedules to the Master Lease Agreement executed or
delivered by Borrower pursuant thereto and any other modifications or amendments
thereof, whereby Borrower (as lessee) leases equipment, software, or goods from
Lender (as lessor) to Borrower (as lessee) (the "Comdisco Lease").

        1.15 "FACILITY FEE" means one percent (1%) of the principal amount of
the Loan due at the Closing Date, plus due diligence and legal expenses of
$4,000.00.

        1.16 "FIXTURES" means any "fixtures," as such term is defined in Section
9313(1)(a) of the UCC, now or hereafter owned or acquired by Borrower or in
which Borrower now holds or hereafter acquires any interest and, now or
hereafter attached or affixed to or constituting a part of, or located in or
upon, real property wherever located, together with all right, title and
interest of Borrower in and to all extensions, improvements, betterments,
renewals, substitutes, and replacements of, and all additions and appurtenances
to any of the foregoing property, and all conversions of the security
constituted thereby, immediately upon any acquisition or release thereof or any
such conversion, as the case may be.

        1.17 "GENERAL INTANGIBLES" means any "general intangibles," as such term
is defined in Section 9106 of the UCC, now owned or hereafter acquired by
Borrower or in which Borrower now holds or hereafter acquires any interest and,
in any event, shall include, without limitation, all right, title and interest
which Borrower may now or hereafter have in or under any contract, all customer
lists, Copyrights, Trademarks, Patents, rights to Intellectual Property,
interests in partnerships, joint ventures and other business associations,
Licenses, permits, trade secrets, proprietary or confidential information,
inventions (whether or not patented or patentable), technical information,
procedures, designs, knowledge, know-how, software, data bases, data, skill,
expertise, recipes, experience, processes, models, drawings, materials and
records, goodwill (including, without limitation, the goodwill associated with
any Trademark, Trademark registration or Trademark licensed under any Trademark
License), claims in or under insurance policies, including unearned premiums,
uncertificated securities, cash and other forms of money or currency, deposit
accounts (including as defined in Section 9105(e) of the UCC), rights to sue for
past, present and future infringement of Copyrights, Trademarks and Patents,
rights to receive tax refunds and other payments and rights of indemnification.

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        1.18 "INSTRUMENTS" means any "instrument," as such term is defined in
Section 9105(1)(i) of the UCC, now owned or hereafter acquired by Borrower or in
which Borrower now holds or hereafter acquires any interest.

        1.19 "INTELLECTUAL PROPERTY" means all Copyrights, Trademarks, Patents,
trade secrets, source codes, customer lists, proprietary or confidential
information, inventions (whether or not patented or patentable), technical
information, procedures, designs, knowledge, know-how, software, data bases,
skill, expertise, experience, processes, models, drawings, materials and
records.

        1.20 "INVENTORY" means any "inventory," as such term is defined in
Section 9109(4) of the UCC, wherever located, now or hereafter owned or acquired
by Borrower or in which Borrower now holds or hereafter acquires any interest,
and, in any event, shall include, without limitation, all inventory, goods and
other personal property which are held by or on behalf of Borrower for sale or
lease or are furnished or are to be furnished under a contract of service or
which constitute raw materials, work in process or materials used or consumed or
to be used or consumed in Borrower's business, or the processing, packaging,
promotion, delivery or shipping of the same, and all furnished goods whether or
not such inventory is listed on any schedules, assignments or reports furnished
to Lender from time to time and whether or not the same is in transit or in the
constructive, actual or exclusive occupancy or possession of Borrower or is held
by Borrower or by others for Borrower's account, including, without limitation,
all goods covered by purchase orders and contracts with suppliers and all goods
billed and held by suppliers and all inventory which may be located on premises
of Borrower or of any carriers, forwarding agents, truckers, warehousemen,
vendors, selling agents or other persons.

        1.21 "LICENSE" means any Copyright License, Patent License, Trademark
License or other license of rights or interests now held or hereafter acquired
by Borrower or in which Borrower now holds or hereafter acquires any interest
and any renewals or extensions thereof.

        1.22 "LIEN" means any mortgage, deed of trust, pledge, hypothecation,
assignment for security, security interest, encumbrance, levy, lien or charge of
any kind, whether voluntarily incurred or arising by operation of law or
otherwise, against any property, any conditional sale or other title retention
agreement, any lease in the nature of a security interest, and the filing of any
financing statement (other than a precautionary financing statement with respect
to a lease that is not in the nature of a security interest) under the UCC or
comparable law of any jurisdiction.

        1.23 "LOAN DOCUMENTS" shall mean and include this Agreement, the
Note(s), and any other documents executed in connection with the Secured
Obligations or the transactions contemplated hereby, as the same may from time
to time be amended, modified, supplemented or restated, provided, that the Loan
Documents shall not include any of the Excluded Agreements.

        1.24 "MATERIAL ADVERSE EFFECT" means a material adverse effect upon: (i)
the business, operations, properties, assets or conditions (financial or
otherwise) of Borrower; or (ii) the ability of Borrower to perform, or of Lender
to enforce, the Secured Obligations other than limitations on Lender's ability
to enforce the Secured Obligations under the Subordination Agreements.

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        1.25 "MATURITY DATE" means the date thirty-six (36) months from the
Advance Date of each installment of the Loan.

        1.26 "PATENT LICENSE" means any written agreement granting any right
with respect to any invention on which a Patent is in existence now owned or
hereafter acquired by Borrower or in which Borrower now holds or hereafter
acquires any interest.

        1.27 "PATENTS" means all of the following now owned or hereafter
acquired by Borrower or in which Borrower now holds or hereafter acquires any
interest: (a) letters patent of, or rights corresponding thereto in, the United
States or any other county, all registrations and recordings thereof, and all
applications for letters patent of, or rights corresponding thereto in the
United States or any other country, including, without limitation,
registrations, recordings and applications in the United States Patent and
Trademark Office or in any similar office or agency of the United States, any
State thereof or any other country; (b) all reissues, continuations,
continuations-in-part or extensions thereof; (c) all petty patents, divisionals,
and patents of addition; and (d) all patents to issue in any such applications.

        1.28 "PERMITTED LIENS" means any and all of the following:

(i)     Liens in favor of Lender,

(ii)    Liens related to, or arising in connection with, Senior Debt,

(iii)   Liens existing as of the date hereof and as disclosed on Schedule
        attached hereto and incorporated herein,

(iv)    Liens for taxes, fees, assessments or other government charges or
        levies, either not delinquent or being contested in good faith and for
        which Borrower maintains adequate reserves on its books in accordance
        with GAAP,

(v)     purchase money Liens (a) on Equipment acquired or held by Borrower
        incurred for financing the acquisition of the Equipment, or (b) existing
        on Equipment when acquired, if the Lien is confined to the property and
        improvements and the proceeds of the Equipment,

(vi)    Leases or subleases and licenses or sublicenses granted in the ordinary
        course of Borrower's business, (vii) Liens arising from judgements,
        decrees or attachments in circumstances not constituting an Event of
        Default,

(viii)  Liens on assets (including the proceeds thereof and accessions thereto)
        that existed at the time such assets were acquired by Borrower; provided
        such Liens are not granted in contemplation of or in connection with the
        acquisition of such asset by Borrower,

(ix)    Liens in favor of customs and revenue authorities arising as a matter of
        law to secure payments of customs duties in connection with the
        importation of goods,

(x)     Liens on insurance proceeds in favor of insurance companies granted
        solely as security for financed premiums,

(xi)    deposits under worker's compensation, unemployment insurance, social
        security and other similar laws, or to secure the performance of bids,
        tenders or contracts (other than for the repayment of borrowed money) or
        to secure indemnity, performance or other similar bonds for the
        performance of bids, tenders or contracts (other than for the repayment
        of borrowed money) or to secure statutory obligations (other than liens
        arising under ERISA or Environmental Liens) or surety or appeal bonds,
        or to secure indemnity, performance or other similar bonds in the
        ordinary course of business,

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(xii)   Liens arising out of operation of law such as mechanics', materialman's,
        carriers', warehousemen's liens incurred in the ordinary course of
        business, and

(xiii)  Liens incurred in connection with the extension, renewal or refinancing
        of the indebtedness secured by Liens of the type described in clauses
        (ii) and (v) above, provided, that any extension, renewal or replacement
        Lien shall be limited to the property encumbered by the existing Lien
        and the principal amount of the indebtedness being extended, renewed or
        refinanced does not increase.

        1.29 "PROCEEDS" means "proceeds," as such term is defined in Section
9306(1) of the UCC and, in any event, shall include, without limitation, (a) any
and all Accounts, Chattel Paper, Instruments, cash or other forms of money or
currency or other proceeds payable to Borrower from time to time in respect of
the Collateral, (b) any and all proceeds of any insurance, indemnity, warranty
or guaranty payable to Borrower from time to time with respect to any of the
Collateral, (c) any and all payments (in any form whatsoever) made or due and
payable to Borrower from time to time in connection with any requisition,
confiscation, condemnation, seizure or forfeiture of all or any part of the
Collateral by any governmental authority (or any Person acting under color of
governmental authority), (d) any claim of Borrower against third parties (i) for
past, present or future infringement of any Copyright, Patent or Patent License
or (ii) for past, present or future infringement or dilution of any Trademark or
Trademark License or for injury to the goodwill associated with any Trademark,
Trademark registration or Trademark licensed under any Trademark License and (e)
any and all other amounts from time to time paid or payable under or in
connection with any of the Collateral.

        1.30 "RECEIVABLES" shall mean and include all of the Borrowers accounts,
instruments, documents, chattel paper and general intangibles whether secured or
unsecured, whether now existing or hereafter created or arising, and whether or
not specifically sold or assigned to Lender hereunder.

        1.31 "SECURED OBLIGATIONS" shall mean and include all principal,
interest, fees, costs, or other liabilities or obligations for monetary amounts
owed by Borrower to Lender, whether due or to become due, matured or unmatured,
liquidated or unliquidated, contingent or non-contingent, and all covenants and
duties regarding such amounts, of any kind of nature, present or future, arising
under this Agreement, the Note(s), or any of the other Loan Documents, whether
or not evidenced by any Note(s), Agreement or other instrument, as the same may
from time to time be amended, modified, supplemented or restated, provided, that
the Secured Obligations shall not include any indebtedness or obligations of
Borrower arising under or in connection with the Excluded Agreements.

        1.32 "SENIOR CREDITOR" means a bank, insurance company, pension fund, or
other institutional lender to be determined, or a syndication of such
institutional lenders that provides Senior Debt financing to Borrower; provided,
that Senior Creditor shall not include any officer, director, shareholder,
venture capital investor, or insider of Borrower, or any affiliate of the
foregoing persons, except upon the express written consent of Lender.

        1.33 "SENIOR DEBT" means any and all indebtedness and obligations for
borrowed money (including, without limitation, principal, premium (if any),
interest, fees charges, expenses, costs, professional fees and expenses, and
reimbursement obligations) at any time owing by Borrower to Senior Creditor
under the Senior Loan Documents, including, but not

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limited to such amounts as may accrue or be incurred before or after default or
workout or the commencement of any liquidation, dissolution, bankruptcy,
receivership or reorganization by or against Borrower provided, that Senior Debt
shall not include the following indebtedness or obligations:

                (a) obligations incurred after default or workout or the
commencement of any liquidation, dissolution, bankruptcy, receivership, or
reorganization case by or against Borrower, and

                (b) borrowed money exceeding Three Million Dollars
($3,000,000.00) outstanding at any one time, in which One Million Dollars
($1,000,000.00) is specifically for an accounts receivable financing line that
allows a maximum borrowing formula of 80% of eligible receivable.

        1.34 "SENIOR LOAN DOCUMENTS" means the loan agreement between Borrower
and Senior Creditor and any other agreement, security agreement, document,
promissory note, UCC financing statement, or instrument executed by Borrower in
favor of Senior Creditor pursuant to or in connection with the Senior Debt or
the loan agreement, as the same may from time to time be amended, modified,
supplemented, extended, renewed, restated or replaced.

        1.35 "SUBORDINATION AGREEMENT" means the Subordination Agreement to be
entered into between Borrower and Lender for the benefit of Senior Creditor, in
substantially the form attached hereto as Exhibit D.

        1.36 "TRADEMARK LICENSE" means any written agreement granting any right
to use any Trademark or Trademark registration now owned or hereafter acquired
by Borrower or in which Borrower now holds or hereafter acquires any Interest.

        1.37 "TRADEMARKS" means any of the following now owned or hereafter
acquired by Borrower or in which Borrower now holds or hereafter acquires any
interest: (a) any and all trademarks, tradenames, corporate names, business
names, trade styles, service marks, logos, other source or business identifiers,
prints and labels on which any of the foregoing have appeared or appear, designs
and general intangibles of like nature, now existing or hereafter adopted or
acquired, all registrations and recordings thereof, and any applications in
connection therewith, including, without limitation, registrations, recordings
and applications in the United States Patent and Trademark Office or in any
similar office or agency of the United States, any State thereof or any other
country or any political subdivision thereof and (b) any reissues, extensions or
renewals thereof.

        1.38 "UCC" shall mean the Uniform Commercial Code as the same may, from
time to time, be in effect in the State of Illinois. Unless otherwise defined
herein, terms that are defined in the UCC and used herein shall have the
meanings given to them in the UCC.

        1.39 "WARRANT AGREEMENT(s)" shall mean those agreements entered into in
connection with the Loan, substantially in the form attached hereto as Exhibit I
pursuant to which Borrower granted Lender the right to purchase that number of
shares of Series C referred Stock of Borrower as more particularly set forth
therein.

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SECTION 2. THE LOAN

        2.1 The outstanding principal amount of each Advance, together with
interest thereon precomputed at the rate of twelve percent (12%) per annum,
shall be due and payable over a period of thirty-six (36) months, such
thirty-six (36) month period shall begin on the first day of the first full
calendar month following the Advance Date (the "Commencement Date"). Payments
shall be made in thirty-six (36) monthly installments of principal, together
with accrued interest, beginning on the Commencement Date and continuing for the
following thirty-five (35) months (each, a "Payment Date"). If any payment under
the Note(s) shall be payable on a day other than a business day, then such
payment shall be due and payable on the next succeeding business day.

        2.2 Borrower shall have the option to prepay the Loan(s), in whole or in
part by paying the principal amount thereon together with all accrued and unpaid
interest with respect to such principal amount, as of the date of such
prepayment, without premium.

        2.3 (a) Notwithstanding any provision in this Agreement, the Note(s), or
any other Loan Document, it is not the parties' intent to contract for, charge
or receive interest at a rate that is greater than the maximum rate permissible
by law which a court of competent jurisdiction shall deem applicable hereto
(which under the laws of the State of Illinois shall be deemed to be the laws
relating to permissible rates of interest on commercial loans) (the "Maximum
Rate"). If the Borrower actually pays Lender an amount of interest, chargeable
on the total aggregate principal Secured Obligations of Borrower under this
Agreement and the Note(s) (as said rate is calculated over a period of time from
the date of this Agreement through the end of time that any principal is
outstanding on the Note(s)), which amount of interest exceeds interest
calculated at the Maximum Rate on said principal chargeable over said period of
time, then such excess interest actually paid by Borrower shall be applied
first, to the payment of principal outstanding on the Note(s); second, after all
principal is repaid, to the payment of Lender's out of pocket costs, expenses,
and professional fees which are owed by Borrower to Lender under this Agreement
or the Loan Documents; and third, after all principal, costs, expenses, and
professional fees owed by Borrower to Lender are repaid, the excess (if any)
shall be refunded to Borrower, and the effective rate of interest will be
automatically reduced to the Maximum Rate.

                (b) In the event any interest is not paid when due hereunder,
delinquent interest shall be added to principal and shall bear interest on
interest, compounded at the rate set forth in Section 2.1.

                (c) Upon and during the continuation of an Event of Default
hereunder, all Secured Obligations, including principal, interest, compounded
interest, and professional fees, shall bear interest at a rate per annum equal
to the rate set forth in Section 2.1. plus five percent (5%) per annum ("Default
Rate").

        2.4 If the Borrower has not repaid the outstanding principal amount
under the Loan in its entirety by the Maturity Date (as defined in the
applicable Note(s)), then for each additional month, or portion thereof,
thereafter that the outstanding principal is not paid, Lender shall have the
right to purchase from the Borrower, at the Exercise Price (adjusted, as set
forth and defined in the Warrant Agreement), an additional number of shares of
Preferred Stock

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which number shall be determined by (i) multiplying the outstanding principal
amount which is due but unpaid by 1% and (ii) dividing the product thereof by
the Exercise Price.

SECTION 3. SECURITY INTEREST

        As security for the prompt, complete and indefeasible payment when due
(whether at stated payment dates or otherwise) of all the Secured Obligations
and in order to induce Lender to make the Loan upon the terms and subject to the
conditions of the Note(s), Borrower hereby assigns, conveys, mortgages, pledges,
hypothecates and transfers to Lender for security purposes only, and hereby
grants to Lender a security interest in, all of Borrower's right, title and
interest in, to and under each of the following (all of which being hereinafter
collectively called the "Collateral"):

        (a)     All Receivables;

        (b)     All Equipment;

        (c)     All Fixtures;

        (d)     All General Intangibles;

        (e)     All Inventory;

        (f)     All other goods and personal property of Borrower whether
                tangible or intangible and whether now or hereafter owned or
                existing, leased, consigned by or to, or acquired by, Borrower
                and wherever located; and

        (g)     To the extent not otherwise included, all Proceeds of each of
                the foregoing and all accessions to, substitutions and
                replacements for, and rents, profits and products of each of the
                foregoing.

        Notwithstanding the foregoing, the security interest granted herein
shall not extend to and the term "Collateral" shall not include any property,
rights or licenses to the extent the granting of a security interest therein (i)
would be contrary to applicable law or (ii) is prohibited by or would constitute
a default under any agreement or document governing such property, rights or
licenses (but only to the extend such prohibition is enforceable under
applicable law).

SECTION 4. REPRESENTATIONS AND WARRANTIES OF BORROWER

        The Borrower represents, warrants and agrees that;

        4.1 Borrower owns all right title and interest in and to the Collateral,
free of all liens, security interests, encumbrances and claims whatsoever,
except for Permitted Liens.

        4.2 Borrower has the full power and authority to, and does hereby grant
and convey to the Lender, a perfected security interest in the Collateral as
security for the Secured Obligations, free of all liens, security interests,
encumbrances and claims, other than Permitted Liens and shall execute such
Uniform Commercial Code financing statements in connection herewith as the
Lender may reasonably request. Except as set forth herein, no other lien,

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security interest, adverse claim or encumbrance has been created by Borrower or
is known by Borrower to exist with respect to any Collateral.

        4.3 Borrower is a corporation duly organized, legally existing and in
good standing under the laws of the State of California, and is duly qualified
as a foreign corporation in all jurisdictions in which the nature of its
business or location of its properties require such qualifications and where the
failure to be qualified would have a Material Adverse Effect.

        4.4 Borrower's execution, delivery and performance of the Note(s), this
Agreement, all financing statements, all other Loan Documents required to be
delivered or executed in connection herewith, and the Warrant Agreement(s) have
been duly authorized by all necessary corporate action of Borrower, the
individual or individuals executing the Loan Documents and the Warrant
Agreement(s) were duly authorized to do so; and the Loan Documents and the
Warrant Agreement(s) constitute legal, valid and binding obligations of the
Borrower, enforceable in accordance with their respective terms, subject to
applicable bankruptcy, insolvency, reorganization or other similar laws
generally affecting the enforcement of the rights of creditors.

        4.5 This Agreement, the other Loan Documents and the Warrant
Agreement(s) do not and will not violate any provisions of Borrower's
[Articles/Certificate of Incorporation], bylaws or any material contract,
agreement, law, regulation, order, injunction, judgment, decree or writ to which
the Borrower is subject, or result in the creation or imposition of any lien,
security interest or other encumbrance upon the Collateral, other than those
created by this Agreement.

        4.6 The execution, delivery and performance of this Agreement, the other
Loan Documents and the Warrant Agreement(s) do not require the consent or
approval of any other person or entity including, without limitation, any
regulatory authority or governmental body of the United States or any state
thereof or any political subdivision of the United States or any state thereof.

        4.7 No event which has had or could reasonably be expected to have a
Material Adverse Effect has occurred and is continuing.

        4.8 No fact or condition exists that would (or would, with the passage
of time, the giving of notice, or both) constitute an Event of Default as
defined in the Loan Agreement between Borrower and Senior Creditor.

        4.9 Borrower has filed and will file all tax returns, federal, state and
local, which it is required to file and has duly paid or fully reserved for all
taxes or installments thereof (including any interest or penalties) as and when
due, which have or may become due pursuant to such returns or pursuant to any
assessment received by Borrower for the three (3) years preceding the Closing
Date, if any (including any taxes being contested in good faith and by
appropriate proceedings), for which the failure to file or pay would have a
Material Adverse Effect.

SECTION 5. INSURANCE

        5.1 So long as there are any Secured Obligations outstanding, Borrower
shall cause to be carried and maintained comprehensive general liability
insurance against risks customarily insured against in Borrower's line of
business. Such risks shall include, without limitation, the

                                       10
<PAGE>   11
risks of death, bodily injury and property damage. So long as there are any
Secured Obligations outstanding, Borrower shall also cause to be carried and
maintained insurance upon the Collateral and Borrower's business, covering
casualty, hazard and such other property risks customarily insured against in
Borrower's line of business. Borrower shall deliver to Lender lender's loss
payable endorsements (Form BFU 438 or equivalent) naming Lender as loss payee or
additional insured, as appropriate. Borrower shall use commercially reasonable
efforts to cause all policies evidencing such insurance to provide for at least
thirty (30) days prior written notice by the underwriter or insurance company to
Lender in the event of cancellation or expiration. Such policies shall be issued
by such insurers and in such amounts as are reasonably acceptable to Lender.

        5.2 Borrower shall and does hereby indemnify and hold Lender, its agents
and shareholders harmless from and against any and all claims, costs, expenses,
damages and liabilities (including, without limitation, such claims, costs,
expenses, damages and liabilities based on liability in tort, including without
limitation, strict liability in tort), including reasonable attorneys' fees,
arising out of the disposition or utilization of the Collateral, other than
claims arising at or caused by Lender's gross negligence or willful misconduct.

SECTION 6. COVENANTS OF BORROWER

        Borrower covenants and agrees as follows at all times while any of the
Secured Obligations remain outstanding:

        6.1 Borrower shall furnish to Lender the financial statements listed
hereinafter, each prepared in accordance with generally accepted accounting
principles consistently applied (the "Financial Statements"):

                (a) as soon as practicable (and in any event within thirty (30)
        days) after the end of each month, unaudited interim financial
        statements as of the end of such month (prepared on a consolidated and
        consolidating basis, if applicable), including balance sheet and related
        statements of income and cash flows accompanied by a report detailing
        any material contingencies (including the commencement of any material
        litigation by or against Borrower) or any other occurrence that could
        reasonably be expected to have a Material Adverse Effect, all certified
        by Borrower's Chief Executive Officer or Chief Financial Officer to be
        true and correct;

                (b) as soon as practicable (and in any event within one hundred
        twenty (120) days) after the end of each fiscal year, unqualified
        audited financial statements as of the end of such year (prepared on a
        consolidated and consolidating basis, if applicable), including balance
        sheet and related statements of income and cash flows, and setting forth
        in comparative form the corresponding figures for the preceding fiscal
        year, certified by a firm of independent certified public accountants
        selected by Borrower and reasonably acceptable to Lender, accompanied by
        any management report from such accountants;

                (c) promptly after the sending or filing thereof, as the case
        may be, copies of any proxy statements, financial statements or reports
        which Borrower has made available to its shareholders and copies of any
        regular, periodic and special reports or registration statements which
        Borrower files with the Securities and Exchange

                                       11
<PAGE>   12
        Commission or any governmental authority which may be substituted
        therefor, or any national securities exchange; and

                (d) promptly, any additional information, financial or otherwise
        (including, but not limited, to tax returns and names of principal
        creditors) as Lender reasonably believes necessary to evaluate
        Borrower's continuing ability to meet its financial obligations.

        6.2 Borrower shall permit any authorized representative of Lender and
its attorneys and accountants on reasonable notice to inspect, examine and make
copies and abstracts of the books of account and records of Borrower at
reasonable times during normal business hours. In addition, such representative
of Lender and its attorneys and accountants shall have the right to meet with
management and officers of the Company to discuss such books of account and
records. Notwithstanding the foregoing Borrower shall not be obligated to allow
Lender to inspect, examine, or make copies or abstracts of the books of account
and records of Borrower if Borrower is not obligated to legally disclose such
information.

        6.3 Borrower will from time to time execute, deliver and file, alone or
with Lender, any financing statements, security agreements or other documents;
procure any instruments or documents as may be reasonably requested by Lender;
and take all further action that may be necessary or desirable, or that Lender
may reasonably request, to confirm, perfect, preserve and protect the security
interests intended to be granted hereby, and in addition, and for such purposes
only, Borrower hereby authorizes Lender to execute and deliver on behalf of
Borrower and to file such financing statements, security agreement and other
documents without the signature of Borrower either in Lender's name or in the
name of Borrower as agent and attorney-in-fact for Borrower. The parties agree
that a carbon, photographic or other reproduction of this Agreement shall be
sufficient as a financing statement and may be filed in any appropriate office
in lieu thereof.

        6.4 Borrower shall protect and defend Borrower's title as well as the
interest of the Lender against all persons claiming any interest adverse to
Borrower or Lender and shall at all times keep the Collateral free and clear
from any legal process, liens or encumbrances whatsoever (except for Permitted
Liens and any Lien placed thereon by Lender) and shall give Lender immediate
written notice thereof.

        6.5 Without Lender's prior written consent, Borrower shall not (a) grant
any material extension of the time of payment of any of the Receivables, (b) to
any material extent, compromise, or settle the same for less than the full
amount thereof, except to the extend that such compromise or settlement arises
from a good faith dispute between the parties and is resolved pursuant to the
Borrower's customary business practices, (c) release, wholly or partly, any
Person liable for the payment thereof, or allow any credit or discount
whatsoever thereon other than trade discounts granted in the ordinary course of
business of Borrower and except to the extend that such release, credit or
discount arises from a good faith dispute between the parties and is resolved
pursuant to the Borrower's customary business practices.

        6.6 Borrower shall maintain and protect its properties, assets and
facilities, including without limitation, its Equipment and Fixtures, in good
order and working repair and condition (taking into consideration ordinary wear
and tear and except if the Borrower determines in its reasonable business
judgment that it is in the best interest of the Borrower not to do so) and

                                       12
<PAGE>   13
from time to time make or cause to be made all necessary and proper repairs,
renewals and replacements thereto and shall competently manage and care for its
property in accordance with prudent industry practices.

        6.7 Borrower shall not merge with and into any other entity; or sell or
convey all or substantially all of its assets or stock to any other person or
entity without notifying Lender a minimum of thirty (30) days prior to the
closing date and requesting Lender's consent to the assignment of all of
Borrower's Secured Obligations hereunder to the successor entity in form and
substance satisfactory to Lender, provided that such consent by the Lender shall
not to be required in any transaction in which the acquiring entity has a
Moody's Bond Rating of BA3 or better or a commercially acceptable equivalent
measure of creditworthiness as reasonably determined by Lessor. In the event
Lender does not consent to such assignment the parties agree Borrower shall
prepay the Loan in accordance with Section 2.2 hereof.

        6.8 Borrower shall not, without the prior written consent of Lender,
such consent not to be unreasonably withheld, (i) declare or pay any cash
dividend or make a distribution on any class of stock, other than (a) the
repurchase of its capital stock from directors, officers, employees and/or
consultants upon exercise of its right of repurchase upon termination of
employment or services to Borrower, (b) conversion of any of its convertible
securities into other securities pursuant to the terms of such convertible
securities or otherwise in exchange therefor or (ii) transfer, sell, lease, lend
or in any other manner convey any equitable, beneficial or legal interest in any
material portion of the assets of Borrower (except (a) inventory sold in the
normal course of business, (b) transfers of non-exclusive license and similar
arrangements for the use of the property of Borrower, (c) transfers of worn-out
or obsolete Equipment or Equipment financed by other vendors, (d) joint ventures
or strategic partnerships consisting of licensing of technology, the development
of technology or the providing of technical support; (e) investments (including
debt obligations) received in connection with the bankruptcy or reorganization
of customers or suppliers and in settlement of delinquent obligations of, and
other disputes with, customers or suppliers arising in the ordinary course of
business, (f) travel advances, employee relocation loans and other employee
loans and advances in an aggregate amount not to exceed $100,000 in the ordinary
course of business, (g) loans to employees, officers or directors relating to
the purchase of equity securities of the Borrower in an aggregate amount not to
exceed $100,000, (g) other loans to officers and employees of the Borrower in an
aggregate amount not in excess of $100,000 outstanding at any time, or (h) other
transfers, outside the ordinary course of business, which in the aggregate do
not exceed $100,000 in any fiscal year.

        6.9 Upon the request of Lender, Borrower shall, during business hours,
make the Inventory and Equipment available to Lender for inspection at the place
where it is normally located and shall make Borrower's log and maintenance
records pertaining to the Inventory and Equipment available to Lender for
inspection. Borrower shall take all action necessary to maintain such logs and
maintenance records in a correct and complete fashion.

        6.10 Borrower covenants and agrees to pay when due, all taxes, fees or
other charges of any nature whatsoever (together with any related interest or
penalties) now or hereafter imposed or assessed against Borrower, Lender or the
Collateral or upon Borrower's ownership, possession, use, operation or
disposition thereof or upon Borrower's rents, receipts or earnings arising
therefrom, except to the extent that such non-payment could not reasonably be
expected to have a Material Adverse Effect. Borrower shall file on or before the
due date therefor all personal property tax returns in respect of the
Collateral. Notwithstanding the

                                       13
<PAGE>   14
foregoing, Borrower may contest, in good faith and by appropriate proceedings,
taxes for which Borrower maintains adequate reserves therefor.

        6.11 Borrower shall not relocate any item of the Collateral (other than
sale of inventory in the ordinary course of business or if considered "mobile
goods" as such term is defined in the Illinois Commercial Code) unless (i) such
relocation shall be within the continental United States and (ii) Borrower shall
first cause to be filed and/or delivered to the Lender all Uniform Commercial
Code financing statements, certificates or other documents or instruments
necessary to continue in effect the perfected security interest of the Lender in
the Collateral, and (iii) Borrower shall have given the Lender no less than
thirty (30) days prior written notice of such relocation.

SECTION 7. CONDITIONS PRECEDENT TO LOAN

        The obligation of Lender to fund the Loan on each Advance Date shall be
subject to Lender's discretion and satisfactory completion of its due diligence
and approval process, and satisfaction by Borrower or waiver by Lender, in
Lender's sole discretion, of the following conditions:

        7.1 (a) The Advance Date for any installment shall occur on or before
December 23, 1999.

        7.2 DOCUMENT DELIVERY. Borrower, on or prior to the Closing Date, shall
have delivered to Lender the following:

                (a) executed originals of the Agreement, the Warrant Agreement,
        Note(s), and any documents reasonably required by Lender to effectuate
        the liens of Lender, with respect to all Collateral;

                (b) certified copy of resolutions of Borrower's board of
        directors evidencing approval of the borrowing and other transactions
        evidenced by the Loan Documents and the Warrant Agreement(s);

                (c) certified copies of the Articles of Incorporation and the
        Bylaws, as amended through the Closing Date, of Borrower;

                (d) certificate of good standing for Borrower from its state of
        incorporation and similar certificates from all other jurisdictions in
        which it does business and where the failure to be qualified would have
        a Material Adverse Effect;

                (e) payment of the Facility Fee;

                (f) an executed Master Lease Agreement and associated equipment
        schedules with Lender as lessor for at least $1,000,000.00; and

                (g) such other documents as Lender may reasonably request.

        7.3 ADVANCE REQUEST. Borrower shall:

                                       14
<PAGE>   15
                (a) deliver to Lender, at least five (5) business day prior to
the Advance Date, written notice in the form of an Advance Request, or as
otherwise specified by Lender from time to time, specifying the date and amount
of such Advance.

                (b) deliver executed original Note(s) and Warrant Agreements as
set forth in Section 2, as applicable.

                (c) deliver such other documents as Lender may reasonably
request.

        7.4 PERFECTION OF SECURITY INTERESTS. Borrower shall have taken or
caused to be taken such actions requested by Lender to grant Lender a first
priority perfected security interest in the Collateral, subject only to
Permitted Liens. Such actions shall include, without limitation, the delivery to
Lender of all appropriate financing statements, executed by Borrower, as to the
Collateral granted by Borrower for all jurisdictions as may be necessary or
desirable to perfect the security interest of Lender in such Collateral

        7.5 ABSENCE OF EVENTS OF DEFAULTS. As of the Closing Date or the Advance
Date, no fact or condition exists that would (or would, with the passage of
time, the giving of notice, or both) constitute an Event of Default under this
Agreement or any of the Loan Documents and no fact or condition exists that
would (or would, with the passage of time, the giving of notice, or both)
constitute an Event of Default as defined in the Senior Loan Documents, between
Borrower and Senior Creditor.

        7.6 MATERIAL ADVERSE EFFECT. As of the Closing Date or the Advance Date,
no event which has had or could reasonably be expected to have a Material
Adverse Effect has occurred and is continuing.

SECTION 8. DEFAULT

        The occurrence of any one or more of the following events (herein called
"Events of Default") shall constitute a default hereunder and under the Note(s)
and other Loan Documents:

        8.1 Borrower defaults in the payment of any principal, interest or other
Secured Obligation involving the payment of money under this Agreement, the
Note(s) or any of the other Loan Documents, and such default continues for more
than five (5) days after the due date thereof; or

        8.2 Borrower defaults in the performance of any other covenant or
Secured Obligation of Borrower hereunder or under the Note(s) or any of the
other Loan Documents, and such default continues for more than twenty (20) days
after Lender has given notice of such default to Borrower.

        8.3 Any representation or warranty made herein by Borrower shall prove
to have been false or misleading in any material respect; or

        8.4 Borrower shall make an assignment for the benefit of creditors, or
shall admit in writing its inability to pay its debts as they become due, or
shall file a voluntary petition in bankruptcy, or shall file any petition or
answer seeking for itself any reorganization,

                                       15
<PAGE>   16
arrangement, composition, readjustment, liquidation, dissolution or similar
relief under any present or future statute, law or regulation pertinent to such
circumstances, or shall seek or consent to or acquiesce in the appointment of
any trustee, receiver, or liquidator of Borrower or of all or any substantial
part (33-1/3% or more) of the properties of Borrower; or Borrower or its
directors or majority shareholders shall take any action initiating the
dissolution or liquidation of Borrower; or

        8.5 Sixty (60) days shall have expired after the commencement of an
action by or against Borrower seeking reorganization, arrangement, composition,
readjustment, liquidation, dissolution or similar relief under any present or
future statute, law or regulation, without such action being dismissed or all
orders or proceedings thereunder affecting the operations or the business of
Borrower being stayed; or a stay of any such order or proceedings shall
thereafter be set aside and the action setting it aside shall not be timely
appealed; or Borrower shall file any answer admitting or not contesting the
material allegations of a petition filed against Borrower in any such
proceedings; or the court in which such proceedings are pending shall enter a
decree or order granting the relief sought in any such proceedings; or

        8.6 Sixty (60) days shall have expired after the appointment, without
the consent or acquiescence of Borrower, of any trustee, receiver or liquidator
of Borrower or of all or any substantial part of the properties of Borrower
without such appointment being vacated; or

        8.7 Upon the occurrence and during the continuance of a default by
Borrower under any Excluded Agreement(s), any other promissory note, agreement
for borrowed money, or any other agreement between Borrower and Lender that has
not been cured within any applicable grace period; or

        8.8 The occurrence and continuance of any default under any lease or
other agreement or obligation of Borrower involving an amount in excess of
$100,000.00 that has not been cured within any applicable grace period or having
a Material Adverse Effect; or the entry of any judgment against Borrower
involving an award in excess of $250,000.00 that would have a Material Adverse
Effect, that has not been bonded or stayed on appeal within thirty (30) days; or

        8.9 The occurrence and continuance of any material Event of Default as
defined in the Senior Loan Documents that has not been cured within any
applicable grace period.

SECTION 9. REMEDIES

        Upon the occurrence and continuance of any one or more Events of
Default, Lender, at its option, may declare the Note and all of the other
Secured Obligations to be accelerated and immediately due and payable (provided,
that upon the occurrence of an Event of Default of the type described in
Sections 8.4 or 8.5, the Note(s) and all of the other Secured Obligations shall
automatically be accelerated and made due and payable without any further act),
whereupon the unpaid principal of and accrued interest on such Note(s) and all
other outstanding Secured Obligations shall become immediately due and payable,
and shall thereafter bear interest at the Default Rate set forth in, and
calculated according to, Section 2.3 (c) of this Agreement. Lender may exercise
all rights and remedies with respect to the Collateral under the Loan Documents
or otherwise available to it under applicable law, including the right to
release, hold or otherwise

                                       16
<PAGE>   17
dispose of all or any part of the Collateral and the right to occupy, utilize,
process and commingle the Collateral.

        Upon the happening and during the continuance of any Event of Default,
Lender may then, or at any time thereafter and from time to time, apply,
collect, sell in one or more sales, lease or otherwise dispose of, any or all of
the Collateral, in its then condition or following any commercially reasonable
preparation or processing, in such order as Lender may elect, and any such sale
may be made either at public or private sale at its place of business or
elsewhere. Borrower agrees that any such public or private sale may occur upon
five (5) calendar days' prior written notice to Borrower. Lender may require
Borrower to assemble the Collateral and make it available to Lender at a place
designated by Lender which is reasonably convenient to Lender and Borrower. The
proceeds of any sale, disposition or other realization upon all or any part of
the Collateral shall be distributed by Lender in the following order of
priorities:

        First, to Lender in an amount sufficient to pay in full Lender's costs
        and professionals' and advisors' fees and expenses;

        Second, to Lender in an amount equal to the then unpaid amount of the
        Secured Obligations in such order and priority as Lender may choose in
        its sole discretion; and

        Finally, upon payment in full of all of the Secured Obligations, to
        Borrower or its representatives or as a court of competent jurisdiction
        may direct.

        Lender shall be deemed to have acted reasonably in the custody,
preservation and disposition of any of the Collateral if it complies with the
obligations of a secured party under Section 9207 of the UCC.

        Lender's rights and remedies hereunder are subject to the terms of the
Subordination Agreement.

SECTION 10. MISCELLANEOUS

        10.1 CONTINUATION OF SECURITY INTEREST. This is a continuing Agreement
and the grant of a security interest hereunder shall remain in full force and
effect and all the rights, powers and remedies of Lender hereunder shall
continue to exist until the Secured Obligations are paid in full as the same
become due and payable and until Lender has executed a written termination
statement (which Lender shall execute within a reasonable time after full
payment of the Secured Obligations hereunder or upon Borrower's reasonable
written request), releasing to Borrower, without recourse, the Collateral and
all rights conveyed hereby and returning possession of the Collateral to
Borrower. The rights, powers and remedies of Lender hereunder shall be in
addition to all rights, powers and remedies given by statute or rule of law and
are cumulative. The exercise of any one or more of the rights, powers and
remedies provided herein shall not be construed as a waiver of or election of
remedies with respect to any other rights, powers and remedies of Lender.

        10.2 SEVERABILITY. Whenever possible, each provision of this Agreement
shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement shall be prohibited by or
invalid under such law, such provision shall be

                                       17
<PAGE>   18
ineffective only to the extent and duration of such prohibition or invalidity,
without invalidating the remainder of such provision or the remaining provisions
of this Agreement.

        10.3 NOTICE. Except as otherwise provided herein, all notices and
service of process required, contemplated, or permitted hereunder or with
respect to the subject matter hereof shall be in writing, and shall be deemed to
have been validly served, given or delivered upon the earlier of: (i) the first
business day after transmission by facsimile or hand delivery or deposit with an
overnight express service or overnight mail delivery service; or (ii) the fifth
calendar day after deposit in the United States mails certified mail, return
receipt requested, with proper first class postage prepaid, and shall be
addressed to the party to be notified as follows:

        (a) IF TO LENDER:

                                 COMDISCO, INC.
                                Legal Department
                           Attention: General Counsel
                              6111 North River Road
                               Rosemont, IL 60018
                            Facsimile: (847) 518-5088

        WITH A COPY TO:

                        COMDISCO, INC./COMDISCO VENTURES
                              6111 North River Road
                               Rosemont, IL 60018
                            Facsimile: (847) 518-5465

        (b) IF TO BORROWER:

                          OPTICAL MICRO-MACHINES, INC.
                            Attention: Michelle Hays
                          6160 Lusk Blvd., Suite C-105
                               San Diego, CA 92121
                            Facsimile: (619) 457-6853
                              Phone: (619) 457-6855

or to such other address as each party may designate for itself by like notice.

        10.4 ENTIRE AGREEMENT; AMENDMENTS. This Agreement, the Note(s), and the
other Loan Documents, and the Warrant Agreement(s) constitute the entire
agreement and understanding of the parties hereto in respect of the subject
matter hereof and thereof, and supersede and replace in their entirety any prior
proposals, term sheets, letters, negotiations or other documents or agreements,
whether written or oral, with respect to the subject matter hereof or thereof
(including, without limitation, Lender's proposal letter dated January 13, 1999
all of which are merged herein and therein. None of the terms of this Agreement,
the Note(s), any of the other Loan Documents or Warrant Agreement(s) may be
amended except by an instrument executed by each of the parties hereto.

                                       18
<PAGE>   19
        10.5 HEADINGS. The various headings in this Agreement are inserted for
convenience only and shall not affect the meaning or interpretation of this
Agreement or any provisions hereof.

        10.6 NO WAIVER. The powers conferred upon Lender by this Agreement are
solely to protect its interest in the Collateral and shall not impose any duty
upon Lender to exercise any such powers. No omission, or delay, by Lender at any
time to enforce any right or remedy reserved to it, or to require performance of
any of the terms, convenants or provisions hereof by Borrower at any time
designated, shall be a waiver of any such right or remedy to which Lender is
entitled, nor shall it in any way affect the right of Lender to enforce such
provisions thereafter.

        10.7 SURVIVAL. All agreements, representations and warranties contained
in this Agreement, the Note(s), the other Loan Documents and the Warrant
Agreement(s) or in any document delivered pursuant hereto or thereto shall be
for the benefit of Lender and shall survive the execution and delivery of this
Agreement and the expiration or other termination of this Agreement.

        10.8 SUCCESSOR AND ASSIGNS. The provisions of this Agreement, the other
Loan Documents and the Warrant Agreement(s) shall inure to the benefit of and be
binding on Borrower and its permitted assigns (if any). Borrower shall not
assign its obligations under this Agreement, the Note(s), any of the other Loan
Documents or the Warrant Agreement(s), without Lender's express written consent,
and any such attempted assignment shall be void and of no effect. Lender may
assign, transfer, or endorse its rights hereunder and under the other Loan
Documents or Warrant Agreement(s) without prior notice to Borrower, and all of
such rights shall inure to the benefit of Lender's successors and assigns.

        10.9 FURTHER INDEMNIFICATION. Borrower agrees to pay, and to save Lender
harmless from, any and all liabilities with respect to, or resulting from any
delay in paying, any and all excise, sales or other similar taxes which may be
payable or determined to be payable with respect to any of the Collateral or in
connection with any of the transactions contemplated by this Agreement.

        10.10 GOVERNING LAW. This Agreement, the Note(s), the other Loan
Documents and the Warrant Agreement(s) have been negotiated and delivered to
Lender in the State of Illinois, and shall not become effective until accepted
by Lender in the State of Illinois. Payment to Lender by Borrower of the Secured
Obligations is due in the State of Illinois. This Agreement, the Note(s), the
other Loan Documents and the Warrant Agreement(s) shall be governed by, and
construed and enforced in accordance with, the laws of the State of Illinois,
excluding conflict of laws principles that would cause the application of laws
of any other jurisdiction.

        10.11 CONSENT TO JURISDICTION AND VENUE. All judicial proceedings
arising in or under or related to this Agreement, the Note(s), any of the other
Loan Documents or Warrant Agreement(s) may be brought in any state or federal
court of competent jurisdiction located in the State of Illinois. By execution
and delivery of this Agreement, each party hereto generally and unconditionally:
(a) consents to personal jurisdiction in Cook County, State of Illinois; (b)
waives any objection as to jurisdiction or venue in Cook County, State of
Illinois; (c) agrees not to assert any defense based on lack of jurisdiction or
venue in the aforesaid courts; and (d) irrevocably agrees to be bound by any
judgment rendered thereby in connection with this Agreement, the Note(s), the
other Loan Documents or Warrant Agreement(s). Service of

                                       19
<PAGE>   20
process on any party hereto in any action arising out of or relating to this
agreement shall be effective if given in accordance with the requirements for
notice set forth in Section 10.3, above and shall be deemed effective and
received as set forth in Section 10.3, above. Nothing herein shall affect the
right to serve process in any other manner permitted by law or shall limit the
right of either party to bring proceedings in the courts of any other
jurisdiction.

        10.12 MUTUAL WAIVER OF JURY TRIAL. Because disputes arising in
connection with complex financial transactions are most quickly and economically
resolved by an experienced and expert person and the parties wish applicable
state and federal laws to apply (rather than arbitration rules), the parties
desire that their disputes be resolved by a judge applying such applicable laws.
EACH OF BORROWER AND LENDER SPECIFICALLY WAIVES ANY RIGHT IT MAY HAVE TO TRIAL
BY JURY OF ANY CAUSE OF ACTION, CLAIM, CROSS-CLAIM, COUNTERCLAIM, THIRD PARTY
CLAIM OR ANY OTHER CLAIM (COLLECTIVELY, "CLAIMS") ASSERTED BY BORROWER AGAINST
LENDER OR ITS ASSIGNEE AND/OR BY LENDER OR ITS ASSIGNEE AGAINST BORROWER. This
waiver extends to all such Claims, including, without limitation, Claims which
involve persons or entities other than Borrower and Lender; Claims which arise
out of or are in any way connected to the relationship between Borrower and
Lender; and any Claims for damages, breach of contract arising out of this
Agreement, any other Loan Document or any of the Excluded Agreements, specific
performance, or any equitable or legal relief of any kind.

        10.13 CONFIDENTIALITY. Lender acknowledges that certain items of
Collateral, including, but not limited to trade secrets, source codes, customer
lists and certain other items of Intellectual Property, and any Financial
Statements provided pursuant to Section 6 hereof, constitute proprietary and
confidential information of the Borrower (the "Confidential Information").
Accordingly, Lender agrees that any Confidential Information it may obtain in
the course of acquiring, perfecting or foreclosing on the Collateral or
otherwise provided under this Agreement, provided such Confidential Information
is marked as confidential by Borrower at the time of disclosure, shall be
received in the strictest confidence and will not be disclosed to any other
person or entity in any manner whatsoever, in whole or in part, without the
prior written consent of the Borrower, unless and until Lender has acquired
indefeasible title thereto.

        10.14 COUNTERPARTS. This Agreement and any amendments, waivers, consents
or supplements hereto may be executed in any number of counterparts, and by
different parties hereto in separate counterparts, each of which when so
delivered shall be deemed an original, but all of which counterparts shall
constitute but one and the same instrument.

INTENTIONALLY LEFT BLANK

                                       20
<PAGE>   21
        IN WITNESS WHEREOF, the Borrower and the Lender have duly executed and
delivered this Agreement as of the day and year first above written.

        BORROWER:                     OPTICAL MICRO-MACHINES, INC.

                                      Signature:  /s/ M. Hays
                                                 -------------------------------
                                      Print Name:  MICHELLE M. HAYS
                                                 -------------------------------
                                      Title:  CFO

ACCEPTED IN ROSEMONT, ILLINOIS:

        LENDER:                       COMDISCO, INC.

                                      Signature:  /s/ James Labe
                                                 -------------------------------

                                                      James Labe, President
                                      Print Name:     Comdisco Ventures Division
                                                  ------------------------------

                                      Title:  APR 07 1999

                                       21
<PAGE>   22
                                    EXHIBIT A

                          SUBORDINATED PROMISSORY NOTE

$______________                                          DATE: _________________

                                                         DUE: __________________

FOR VALUE RECEIVED, Optical Micro-Machines, Inc., a California corporation (the
"Borrower") hereby promises to pay to the order of Comdisco, Inc., a Delaware
corporation (the "Lender") at P.O. Box 91744, Chicago, IL 60693 or such other
place of payment as the holder of this Secured Promissory Note (this "Note") may
specify from time to time in writing, in lawful money of the United States of
America, the principal amount of ___________ and 00/100 Dollars ($__________)
together with interest at twelve percent (12%) per annum from the date of this
Note to maturity of each installment on the principal hereof remaining from time
to time unpaid, such principal and interest to be paid in 36 equal monthly
installments of $ ___________ each, commencing ___________ and on the same day
of each month thereafter to and including ___________, such installments to be
applied first to accrued and unpaid interest and the balance to unpaid
principal. Interest shall be computed on the basis of a year consisting of
twelve months of thirty days each.

This Note is the Note referred to in, and is executed and delivered in
connection with, that certain Subordinated Loan and Security Agreement dated
March 23, 1999 by and between Borrower and Lender (as the same may from time to
time be amended, modified or supplemented in accordance with its terms, the
"Loan Agreement"), and is entitled to the benefit and security of the Loan
Agreement and the other Loan Documents (as defined in the Loan Agreement), to
which reference is made for a statement of all of the terms and conditions
thereof. All terms defined in the Loan Agreement shall have the same definitions
when used herein, unless otherwise defined herein.

THIS NOTE IS EXPRESSLY SUBJECT TO THE TERMS OF THAT CERTAIN SUBORDINATION
AGREEMENT BY AND BETWEEN LENDER AND BORROWER FOR THE BENEFIT OF SENIOR CREDITOR.
IN THE EVENT OF ANY CONTRADICTION OR INCONSISTENCY BETWEEN THIS NOTE AND THE
SUBORDINATION AGREEMENT, THE TERMS OF THE SUBORDINATION AGREEMENT SHALL CONTROL.

The Borrower waives presentment and demand for payment, notice of dishonor,
protest and notice of protest and any other notice as permitted under the UCC or
any applicable law.

                                       -1-
<PAGE>   23
This Note has been negotiated and delivered to Lender and is payable in the
State of Illinois, and shall not become effective until accepted by Lender in
the State of Illinois. This Note shall be governed by and construed and enforced
in accordance with, the laws of the State of Illinois, excluding any conflicts
of law rules or principles that would cause the application of the laws of any
other jurisdiction.

         BORROWER:                    OPTICAL MICRO-MACHINES, INC.
                                      6160 Lusk Blvd., Suite C-105
                                      San Diego, CA 92121

         Signature:                   __________________________________________

         Print Name:                  __________________________________________

         Title:                       __________________________________________

                                       -2-
<PAGE>   24
                                    Exhibit C

                                 ADVANCE REQUEST

                                                         Date:
                                                               -----------------

To:  Lender:
     Comdisco, Inc.
     c/o Comdisco Ventures
     3000 Sand Hill Road
     Menlo Park, CA 94025
     Attention: Vika Tonga
     Facsimile (650) 854-4026

        Borrower hereby requests from Comdisco, Inc. ("Lender") an Advance in
the amount of $_________________ on ______________, 1998 (the "Advance Date")
under that Subordinated Loan and Security Agreement between Borrower and Lender
dated March 23, 1999 (the "Agreement").

        Please:

         (a)      Issue a check payable to Borrower  __________

                                    or

         (b)      Wire Funds to Borrower's account   __________

                  Bank:_________________________________
                  Address:______________________________
                          ______________________________
                  ABA Number:___________________________
                  Account Number:_______________________
                  Account Name:_________________________

        Borrower hereby affirms that all Representations and Warranties of
Borrower set forth in Section 4 and all Conditions Precedent to Loan set forth
in Section 7 of the Agreement remain true and correct as of the date hereof.

        Executed this _____ day of ___________, 1999 by:

                          BORROWER:            OPTICAL MICRO-MACHINES, INC.

                                  BY:          _________________________________
                                  TITLE:       _________________________________
                                  PRINT:       _________________________________

                                       22
<PAGE>   25
                                    EXHIBIT D

                             SUBORDINATION AGREEMENT

        This Subordination Agreement is made as of this ___ day of March __,
1999, by and between Comdisco, Inc. ("Creditor"), a Delaware corporation having
its principal place of business at 6111 North River Road, Rosemont, IL 60018,
and Silicon Valley Bank, a California-chartered bank with its principal place of
business at 3003 Tasman Drive, Santa Clara, CA 95054 ("Bank").

                                    RECITALS

        A. Optical Micro-Machines, Inc. ("Borrower") has requested and/or
obtained certain loans or other credit accommodations from Bank to Borrower
which are or may be from time to time secured by assets and property of
Borrower.

        B. Creditor has extended a loan in the aggregate original principal
amount of ONE MILLION and 00/100 DOLLARS ($1,000,000.00) as evidenced by
Subordinated Promissory Notes (as the same may from time to time be amended,
modified, supplemented, extended, renewed, restated or replaced, the
"Subordinated Notes") made by Borrower in favor of Creditor. The Borrower's
obligations to Creditor evidenced by the Subordinated Notes are secured by the
personal property collateral granted by the Borrower to Creditor pursuant to a
Subordinated Loan and Security Agreement dated as of March 23, 1999 (as the same
may from time to time be amended, modified, supplemented or restated, the
"Subordinated Security Agreement").

        C. In order to induce Bank to extend credit to Borrower and, at any time
or from time to time, at Bank's option, to make such further loans, extensions
of credit, or other accommodations to or for the account of Borrower, or to
purchase or extend credit upon any instrument or writing in respect of which
Borrower may be liable in any capacity, or to grant such renewals or extension
of any such loan, extension of credit, purchase, or other accommodation as Bank
may deem advisable, Creditor is willing to subordinate: (i) all of Borrower's
indebtedness and obligations to Creditor, whether presently existing or arising
in the future under or relating to the Subordinated Security Agreement and
Subordinated Note (collectively, the "Subordinated Debt") to Borrower's
indebtedness and obligations to Bank now existing or hereafter arising,
consisting of principal and interest in an amount up to $3,000,000.00, in which
One Million Dollars ($1,000,000.00) is specifically for an accounts receivable
financing line that allows a maximum borrowing formula of 80% of eligible
receivable; plus all costs of collecting such obligations (including attorney's
fees) plus all interest accruing after the commencement by or against Borrower
of any bankruptcy, reorganization or similar proceeding (the "Senior Debt") and
(ii) all of Creditor's security interests, if any, to all of Bank's security
interests in the Borrower's property up to the amount of the Senior Debt.
Notwithstanding anything to the contrary contained in this definition of
"Subordinated Debt", there shall be expressly excluded from such definition (1)
Warrant Agreement(s) between Borrower and the Creditor pursuant to which
Borrower granted Creditor the right to purchase shares of its Preferred Stock
("Warrant Agreement"); and (2) all rights of creditor to protect and enforce its
rights under the Warrant Agreement by suit in equity for specific performance of
the provisions of the Warrant Agreement or to enjoin Borrower from continuing to
commit any breach of the Warrant Agreement (but not including any put or
repurchase obligations, if any) (collectively, the "Excluded Agreements").

        NOW, THEREFORE, THE PARTIES AGREE AS FOLLOWS:

        1. Creditor subordinates to Bank any security interest or lien, subject
to the limit set forth herein, that Creditor may have in any property of
Borrower, other than with respect to the Excluded Agreements Notwithstanding the
respective dates of attachment or perfection of the security interest of

                                       -1-
<PAGE>   26
Creditor and the security interest of Bank, the security interest of Bank in the
Collateral, as defined in the Loan and Security Agreement, dated as of
______________________________, between Borrower and Bank (the "Loan
Agreement"), shall at all times be prior to the security interest of Creditor.

        2. On the terms and conditions set forth below, all Subordinated Debt is
subordinated in right of payment to all obligations of Borrower to Bank of the
Senior Debt. Nothing herein shall be deemed to subordinate, waive or restrict
the payment or performance of the obligations arising under the Excluded
Agreements or subordinate the priority of any lien or interest in property
securing or evidenced by the Excluded Agreements, provided, however, such
exclusion shall be limited to the property securing such Excluded Agreements.

        3. Subject to and except as set forth in Section 4 below, Creditor will
not demand or receive from Borrower (and Borrower will not pay to Creditor) all
or any part of the Subordinated Debt, by way of payment, prepayment, setoff,
lawsuit or otherwise, nor will Creditor exercise any remedy with respect to the
Collateral, nor will Creditor commence, or cause to commence, prosecute or
participate in any administrative, legal or equitable action against Borrower,
for so long as any portion of the Senior Debt remains outstanding.

        4. (a) Notwithstanding anything to the contrary contained in Sections 2
and 3 above, but expressly subject to (b) below, Borrower shall be permitted to
make, and Creditor shall be permitted to accept or receive the following
permitted payments ("Permitted Payments"): (i) scheduled repayments of principal
when due under the Subordinated Note and Subordinated Security Agreement, (ii)
scheduled payments of accrued interest when due under the Subordinated Note and
Subordinated Security Agreement, (iii) payments of reimbursable expenses, costs
and professional fees and expenses as and when due under the Subordinated Note
and the Subordinated Security Agreement, (iv) cancellation of Subordinated Debt
in consideration of the exercise price for stock purchased by Creditor under the
Warrant Agreement, and (v) other payments consented to in writing by the Bank.

                (b) Notwithstanding anything to the contrary contained in this
Section 4 or elsewhere in this Agreement, if the Bank delivers to Creditor
written notice (a "Blockage Notice") which states that either:

                        (i) a specific default by Borrower involving the payment
                of the Senior Debt (a "Payment Default") has occurred under the
                Loan Agreement and continues to exist after the giving of any
                required notice and the expiration of any applicable grace or
                cure period, or

                        (ii) a specific default by Borrower not involving the
                payment of Senior Debt (a "Non-Payment Default") has occurred
                under the Loan Agreement and continues to exist after the giving
                of any required notice and the expiration of any applicable
                grace or cure period, such notice to include all such defaults
                in existence at the time,

then from and after the date of delivery of any such Blockage Notice, (i)
Creditor shall not accept or receive any payment of any kind of or on account of
the Subordinated Debt (including any Permitted Payment), unless and until the
earlier of (A) the time such Payment Default or Non-Payment Default shall have
been cured by Borrower or waived in writing by Bank, or (B) the expiration of
the Blockage Period (as defined below) for such Blockage Notice, and (ii)
Creditor shall disgorge any Permitted Payments received, for a period not to
exceed two (2) months during the time commencing upon the occurrence of a
Payment Default or Non-Payment Default until the date of receipt by Creditor of
such Blockage Notice.

        As used herein, "Blockage Period" means a period of time beginning on
the date a Blockage Notice is delivered to Creditor and termination on the
earlier to occur of:

                                       -2-
<PAGE>   27
                (1) 180 days following such date; provided that if, prior to the
        expiration of such 180-day period, Bank has commenced a judicial
        proceeding or non-judicial actions to collect or enforce the Senior Debt
        or the collateral for the Senior Debt, or a case or proceeding by or
        against Borrower is commenced under the federal Bankruptcy Code or any
        other insolvency law, then such period shall be extended during the
        continuation of such proceedings and actions under the payment in cash
        or other property or securities in the full amount of the allowed claim
        of the Senior Debt; or

                (2) Bank's written consent to such termination.

        With respect to Non-Payment Defaults, in no event shall the Blockage
Period during any period of 365 consecutive days exceed 180 days in the
aggregate, whether pursuant to one (1) Blockage Notice or multiple Blockage
Notices; provided, however, the foregoing limitation shall not apply in the
event that prior to the expiration of such 180 day period Bank has commenced a
judicial proceeding or non-judicial actions to collect or enforce the Senior
Debt or a case of proceeding by or against Borrower is commenced under the
federal Bankruptcy Code or any other insolvency law, then such period shall be
extended during the continuation of such proceedings and actions until the
payment in cash or other property or securities in the full amount of the
allowed claim of the Senior Debt. After the satisfaction of the applicable
conditions specified in (1) or (2) above, Creditor shall be entitled to receive
all Permitted Payments until Creditor's receipt of a subsequent Blockage Notice
from Bank.

        5. Creditor shall promptly deliver to Bank in the form received (except
for endorsement or assignment by Creditor where required by Bank) for
application to the Senior Debt any payment, distribution, security or proceeds
received by Creditor with respect to the Subordinated Debt other than in
accordance with this Agreement.

        6. In the event of Borrower's insolvency, reorganization or any case or
proceeding under any bankruptcy or insolvency law or laws relating to the relief
of debtors, these provisions shall remain in full force and effect, and Bank's
claims against Borrower and the estate of Borrower shall be paid in full before
any payment is made to Creditor.

        7. For so long as any of the Senior Debt remains unpaid, Creditor
irrevocably appoints Bank as Creditor's attorney-in-fact, and grants to Bank a
power of attorney with full power of substitution, in the name of Creditor or in
the name of Bank, for the use and benefit of Bank, without notice to Creditor,
in any bankruptcy, insolvency or similar proceeding involving Borrower to (i)
file the appropriate claim or claims in respect of the Subordinated Debt on
behalf of Creditor if (a) Creditor does not do so prior to 30 days before the
expiration of the time to file claims in such proceeding, and (b) if Bank
elects, in its sole discretion, to file such claim or claims and (ii) accept or
reject any plan or reorganization or arrangement on behalf of Creditor and to
otherwise vote Creditor's claims in respect of any Subordinated Debt in any
manner that Bank deems appropriate for the enforcement of its rights hereunder
if Creditor does not accept, reject or otherwise vote its claims within fifteen
(15) days of receipt of written notice from Bank of its intent to do so on
behalf of Creditor.

        8. Creditor shall immediately affix a legend to the instruments
evidencing the Subordinated Debt stating that the instruments are subject to the
terms of this Agreement. No amendment of the documents evidencing or relating to
the Subordinated Debt shall directly or indirectly modify the provisions of this
Agreement in any manner which might terminate or impair the subordination of the
Subordinated Debt or the subordination of the security interest or lien that
Creditor may have in any property of Borrower. By way of example, such
instruments shall not be amended to (i) increase the rate of interest with
respect to the Subordinated Debt, or (ii) accelerate the payment of the
principal or interest or any other portion of the Subordinated Debt.

                                       -3-
<PAGE>   28
        9. This Agreement shall remain effective for so long as Borrower owes
any amounts to Bank under the Loan Agreement or otherwise in an amount not to
exceed the Senior Debt. If, at any time after payment in full of the Senior Debt
any payments of the Senior Debt must be disgorged by Bank for any reason
(including, without limitation, the bankruptcy of Borrower), this Agreement and
the relative rights and priorities set forth herein shall be reinstated as to
all such disgorged payments as though such payments had not been made and
Creditor shall immediately pay over to Bank all payments received with respect
to the Subordinated Debt to the extent that such payments would have been
prohibited hereunder. At any time and from time to time, without notice to
Creditor, Bank may take such actions with respect to the Senior Debt as Bank, in
its sole discretion, may deem appropriate, including, without limitation,
terminating advances to Borrower, increasing the principal amount in an amount
not to exceed $3,000,000.00, extending the time of payment, increasing
applicable interest rates, renewing, compromising or otherwise amending the
terms of any documents affecting the Senior Debt and any collateral securing the
Senior Debt, and enforcing or failing to enforce any rights against Borrower or
any other person. Creditor waives the benefits, if any, of any statutory or
common law rule that may permit a subordinating creditor to assert any defenses
of a surety or guarantor, or that may give the subordinating creditor the right
to require a senior creditor to marshal assets, and Creditor agrees that it
shall not assert any such defenses or rights.

        10. This Agreement shall bind any successors or assignees of Creditor
and shall benefit any successors or assigns of Bank. This Agreement is solely
for the benefit of Creditor and Bank and not for the benefit of Borrower or any
other party. Creditor further agrees that if Borrower is in the process of
refinancing a portion of the Senior Debt with a new lender, and if Bank makes a
request of Creditor, Creditor shall agree to enter into a new subordination
agreement with the new lender on substantially the terms and conditions of this
Agreement.

        11. This Agreement may be executed in two or more counterparts, each of
which shall be deemed an original and all of which together shall constitute one
instrument. This Agreement shall become effective only when it shall have been
executed by Creditor and Bank (provided, however, in no event shall this
Agreement become effective until signed by an officer of Bank in California).

        12. This Agreement shall be governed by and construed in accordance with
the laws of the State of California without giving effect to conflicts of law
principles. Creditor and Bank submit to the exclusive jurisdiction of the state
and federal courts located in Santa Clara County, California. CREDITOR AND BANK
WAIVE THEIR RESPECTIVE RIGHTS TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION
BASED UPON OR ARISING OUT OF THIS AGREEMENT OR ANY OF THE TRANSACTIONS
CONTEMPLATED HEREIN.

        13. This Agreement represents the entire agreement with respect to the
subject matter hereof, and supersedes all prior negotiations, agreements and
commitments. Creditor is not relying on any representations by Bank or Borrower
in entering into this Agreement, and Creditor has kept and will continue to keep
itself fully apprised of the financial and other condition of Borrower. This
Agreement may be amended only by written instrument signed by Creditor and Bank.

        14. In the event of any legal action to enforce the rights of a party
under this Agreement, the party prevailing in such action shall be entitled, in
addition to such other relief as may be granted, all reasonable costs and
expenses, including reasonable attorneys' fees, incurred in such action.

                                       -4-
<PAGE>   29
        IN WITNESS WHEREOF, the undersigned have executed this Agreement as of
the date first above written.

"CREDITOR"                              "BANK"

COMDISCO, INC.                          SILICON VALLEY BANK,

By: ___________________________         By: ____________________________________

Title: ________________________         Title: _________________________________

The undersigned approves of the terms of this Agreement.

"BORROWER"

OPTICAL MICRO-MACHINES, INC.

By: ___________________________

Title: ________________________

                                -5-<PAGE>   1

                                                                   EXHIBIT 10.20

                             MASTER LEASE AGREEMENT

MASTER LEASE AGREEMENT (the "Master Lease") dated March 23, 1999 by and between
COMDISCO, INC. ("Lessor") and Optical Micro-Machines, Inc. ("Lessee").

IN CONSIDERATION of the mutual agreements described below, the parties agree as
follows (all capitalized terms are defined in Section 14 18):

1.      PROPERTY LEASED.

Lessor leases to Lessee all of the Equipment described on each Summary Equipment
Schedule. In the event of a conflict, the terms of the applicable Schedule
prevail over this Master Lease

2.      TERM.

On the Commencement Date. Lessee will be deemed to accept the Equipment, will be
bound to its rental obligations for each item of Equipment and the term of a
Summary Equipment Schedule will begin and continue through the Initial Term and
thereafter until terminated by either party upon prior written notice received
during the Notice Period. No termination may be effective prior to the
expiration of the Initial Term

3.      RENT AND PAYMENT.

Rent is due and payable in advance on the first day of each Rent Interval at the
address specified in Lessor's invoice Interim Rent is due and payable when
invoiced. If any payment is not made when due, Lessee will pay a Late Charge on
the overdue amount Upon Lessee's execution of each Schedule, Lessee will pay
Lessor the Advance specified on the Schedule. The Advance will be credited
towards the final Rent payment if Lessee is not then in default No interest will
be paid on the Advance

4.      SELECTION; WARRANTY AND DISCLAIMER OF WARRANTIES.

4.1 SELECTION. Lessee acknowledges that it has selected the Equipment and
disclaims any reliance upon statements made by the Lessor, other than as set
forth in the Schedule.

4.2 WARRANTY AND DISCLAIMER OF WARRANTIES. Lessor warrants to Lessee that, so
long as Lessee is not in default, Lessor will not disturb Lessee's quiet and
peaceful possession, and unrestricted use of the Equipment To the extent
permitted by the manufacturer, Lessor assigns to Lessee during the term of the
Summary Equipment Schedule any manufacturer's warranties for the Equipment
LESSOR MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED AS TO ANY MATTER WHATSOEVER,
INCLUDING, WITHOUT LIMITATION, THE MERCHANTABILITY OF THE EQUIPMENT OR ITS
FITNESS FOR A PARTICULAR PURPOSE Lessor is not responsible for any liability,
claim, loss, damage or expense of any kind (including strict liability in tort)
caused by the Equipment except for any loss or damage caused by the willful
misconduct or negligent acts of Lessor In no event is Lessor responsible for
special, incidental or consequential damages

5.      TITLE; RELOCATION OR SUBLEASE; AND ASSIGNMENT.

5.1 TITLE. Lessee holds the Equipment subject and subordinate to the rights of
the Owner, Lessor, any Assignee and any Secured Party Lessee authorizes Lessor,
as Lessee's agent, and at Lessor's expense, to prepare, execute and file in
Lessee's name precautionary Uniform Commercial Code financing statements showing
the interest of the Owner, Lessor, and any Assignee or Secured Party in the
Equipment and to insert serial numbers in Summary Equipment Schedules as
appropriate. Lessee will, at its expense, keep the Equipment free and clear from
any liens or encumbrances of any kind (except any caused by Lessor) and will
indemnify and hold the Owner, Lessor, any Assignee and Secured Party harmless
from and against any loss caused by Lessee's failure to do so, except where such
is caused by Lessor.

<PAGE>   2

5.2 RELOCATION OR SUBLEASE. Upon prior written notice, Lessee may relocate
Equipment to any location within the continental United States provided (i) the
Equipment will not be used by an entity exempt from federal income tax, and (ii)
all additional costs (including any administrative fees, additional taxes and
insurance coverage) are reconciled and promptly paid by Lessee

Lessee may sublease the Equipment upon the reasonable consent of the Lessor and
the Secured Party. Such consent to sublease will be granted if. (i) Lessee meets
the relocation requirements set out above, (ii) the sublease is expressly
subject and subordinate to the terms of the Schedule, (iii) Lessee assigns its
rights in the sublease to Lessor and the Secured Party as additional collateral
and security, (iv) Lessee's obligation to maintain and insure the Equipment is
not altered, (v) all financing statements required to continue the Secured
Party's prior perfected security interest are filed, and (vi) Lessee executes
sublease documents acceptable to Lessor.

No relocation or sublease will relieve Lessee from any of its obligations under
this Master Lease and the relevant Schedule.

5.3 ASSIGNMENT BY LESSOR. The terms and conditions of each Schedule have been
fixed by Lessor in order to permit Lessor to sell and/or assign or transfer its
interest or grant a security interest in each Schedule and/or the Equipment to a
Secured Party or Assignee. In that event, the term Lessor will mean the Assignee
and any Secured Party. However, any assignment, sale, or other transfer by
Lessor will not relieve Lessor of its obligations to Lessee and will not
materially change Lessee's duties or materially increase the burdens or risks
imposed on Lessee The Lessee consents to and will acknowledge such assignments
in a written notice given to Lessee. Lessee also agrees that.

(a) The Secured Party will be entitled to exercise all of Lessor's rights, but
will not be obligated to perform any of the obligations of Lessor. The Secured
Party will not disturb Lessee's quiet and peaceful possession and unrestricted
use of the Equipment so long as Lessee is not in default and the Secured Party
continues to receive all Rent payable under the Schedule, and

(b) Lessee will pay all Rent and all other amounts payable to the Secured Party,
despite any defense or claim which it has against Lessor. Lessee reserves its
right to have recourse directly against Lessor for any defense or claim,

(c) Subject to and without impairment of Lessee's leasehold rights in the
Equipment, Lessee holds the Equipment for the Secured Party to the extent of the
Secured Party's rights in that Equipment.

6.      NET LEASE; TAXES AND FEES.

6.1 NET LEASE. Each Summary Equipment Schedule constitutes a net lease Lessee's
obligation to pay Rent and all other amounts due hereunder is absolute and
unconditional and is not subject to any abatement, reduction, set-off, defense,
counterclaim, interruption, deferment or recoupment for any reason whatsoever.

6.2 TAXES AND FEES. Lessee will pay when due or reimburse Lessor for all taxes,
fees or any other charges (together with any related interest or penalties not
arising from the negligence of Lessor) accrued for or arising during the term of
each Summary Equipment Schedule against Lessor, Lessee or the Equipment by any
governmental authority (except only Federal, state, local and franchise taxes on
the capital or the net income of Lessor) Lessor will file all personal property
tax returns for the Equipment and pay all such property taxes due. Lessee will
reimburse Lessor for property taxes within thirty (30) days of receipt of an
invoice.

7.      CARE, USE AND MAINTENANCE; INSPECTION BY LESSOR.

7.1 CARE, USE AND MAINTENANCE. Lessee will maintain the Equipment in good
operating order and appearance, protect the Equipment from deterioration, other
than normal wear and tear, and will not use the Equipment for any purpose other
than that for which it was designed. If commercially available and considered
common business practice for each item of Equipment,

<PAGE>   3

Lessee will maintain in force a standard maintenance contract with the
manufacturer of the Equipment, or another party acceptable to Lessor, and will
provide Lessor with a complete copy of that contract. If Lessee has the
Equipment maintained by a party other than the manufacturer or self maintains,
Lessee agrees to pay any costs necessary for the manufacturer to bring the
Equipment to then current release, revision and engineering change levels, and
to re-certify the Equipment as eligible for manufacturer's maintenance at the
expiration of the lease term, provided re-certification is available and is
required by Lessor The lease term will continue upon the same terms and
conditions until recertification has been obtained

7.2 INSPECTION BY LESSOR. Upon reasonable advance notice, Lessee, during
reasonable business hours and subject to Lessee's security requirements, will
make the Equipment and its related log and maintenance records available to
Lessor for inspection

8. REPRESENTATIONS AND WARRANTIES OF LESSEE. Lessee hereby represents, warrants
and covenants that with respect to the Master Lease and each Schedule executed
hereunder:

(a) The Lessee is a corporation duly organized and validly existing in good
standing under the laws of the jurisdiction of its incorporation, is duly
qualified to do business in each jurisdiction (including the jurisdiction where
the Equipment is, or is to be, located) where its ownership or lease of property
or the conduct of its business requires such qualification, except for where
such lack of qualification would not have a material adverse effect on the
Company's business, and has full corporate power and authority to hold property
under the Master Lease and each Schedule and to enter into and perform its
obligations under the Master Lease and each Schedule

(b) The execution and delivery by the Lessee of the Master Lease and each
Schedule and its performance thereunder have been duly authorized by all
necessary corporate action on the part of the Lessee, and the Master Lease and
each Schedule are not inconsistent with the Lessee's Articles of Incorporation
or Bylaws, do not

                                      - 1 -

<PAGE>   4

contravene any law or governmental rule, regulation or order applicable to it,
do not and will not contravene any provision of, or constitute a default under,
any indenture, mortgage, contract or other instrument to which it is a party or
by which it is bound, and the Master Lease and each Schedule constitute legal,
valid and binding agreements of the Lessee, enforceable in accordance with their
terms, subject to the effect of applicable bankruptcy and other similar laws
affecting the rights of creditors generally and rules of law concerning
equitable remedies.

(c) There are no actions, suits, proceedings or patent claims pending or, to the
knowledge of the Lessee, threatened against or affecting the Lessee in any court
or before any governmental commission, board or authority which, if adversely
determined, will have a material adverse effect on the ability of the Lessee to
perform its obligations under the Master Lease and each Schedule

(d) The Equipment is personal property and when subjected to use by the Lessee
will not be or become fixtures under applicable law

(e) The Lessee has no material liabilities or obligations, absolute or
contingent (individually or in the aggregate), except the liabilities and
obligations of the Lessee as set forth in the Financial Statements and
liabilities and obligations which have occurred in the ordinary course of
business, and which have not been, in any case or in the aggregate, materially
adverse to Lessee's ongoing business

(f) To the best of the Lessee's knowledge, the Lessee owns, possesses, has
access to, or can become licensed on reasonable terms under all patents, patent
applications, trademarks, trade names, inventions, franchises, licenses,
permits, computer software and copyrights necessary for the operations of its
business as now conducted, with no known infringement of, or conflict with, the
rights of others

(g) All material contracts, agreements and instruments to which the Lessee is a
party are in full force and effect in all material respects, and are valid,
binding and enforceable by the Lessee in accordance with their respective terms,
subject to the effect of applicable bankruptcy and other similar laws affecting
the rights of creditors generally, and rules of law concerning equitable
remedies

9.      DELIVERY AND RETURN OF EQUIPMENT.

Lessee hereby assumes the full expense of transportation and in-transit
insurance to Lessee's premises and installation thereat of the Equipment Upon
termination (by expiration or otherwise) of each Summary Equipment Schedule,
Lessee shall, pursuant to Lessor's instructions and at Lessee's full expense
(including, without limitation, expenses of transportation and in-transit
insurance), return the Equipment to Lessor in the same operating order, repair,
condition and appearance as when received, less normal depreciation and wear and
tear Lessee shall return the Equipment to Lessor at 6111 North River Road,
Rosemont, Illinois 60018 or at such other address within the continental United
States as directed by Lessor, provided, however, that Lessee's expense shall be
limited to the cost of returning the Equipment to Lessor's address as set forth
herein. During the period subsequent to receipt of a notice under Section 2,
Lessor may demonstrate the Equipment's operation in place and Lessee will supply
any of its personnel as may reasonably be required to assist in the
demonstrations

10.     LABELING.

Upon request, Lessee will mark the Equipment indicating Lessor's interest with
labels provided by Lessor. Lessee will keep all Equipment free from any other
marking or labeling which might be interpreted as a claim of ownership

11.     INDEMNITY.

With regard to bodily injury and property damage liability only, Lessee will
indemnify and hold Lessor, any Assignee and any Secured Party harmless from and
against any and all claims, costs, expenses, damages and liabilities, including
reasonable attorneys' fees,

<PAGE>   5

arising out of the ownership (for strict liability in tort only), selection,
possession, leasing, operation, control, use, maintenance, delivery, return or
other disposition of the Equipment during the term of this Master Lease or until
Lessee's obligations under the Master Lease terminate However, Lessee is not
responsible to a party indemnified hereunder for any claims, costs, expenses,
damages and liabilities occasioned by the negligent acts of such indemnified
party Lessee agrees to carry bodily injury and property damage liability
insurance during the term of the Master Lease in amounts and against risks
customarily insured against by the Lessee on equipment owned by it Any amounts
received by Lessor under that insurance will be credited against Lessee's
obligations under this Section.

12.     RISK OF LOSS.

Effective upon delivery and until the Equipment is returned, Lessee relieves
Lessor of responsibility for all risks of physical damage to or loss or
destruction of the Equipment Lessee will carry casualty insurance for each item
of Equipment in an amount not less than the Casualty Value All policies for such
insurance will name the Lessor and any Secured Party as additional insured and
as loss payee, and will provide for at least thirty (30) days prior written
notice to the Lessor of cancellation or expiration, and will insure Lessor's
interests regardless of any breach or violation by Lessee of any representation,
warranty or condition contained in such policies and will be primary without
right of contribution from any insurance effected by Lessor. Upon the execution
of any Schedule, the Lessee will furnish appropriate evidence of such insurance
acceptable to Lessor.

Lessee will promptly repair any damaged item of Equipment unless such Equipment
has suffered a Casualty Loss. Within fifteen (15) days of a Casualty Loss,
Lessee will provide written notice of that loss to Lessor and Lessee will, at
Lessee's option, either (a) replace the item of Equipment with Like Equipment
and marketable title to the Like Equipment will automatically vest in Lessor or
(b) pay the Casualty Value and after that payment and the payment of all other
amounts due and owing with respect to that item of Equipment, Lessee's
obligation to pay further Rent for the item of Equipment will cease

13.     DEFAULT, REMEDIES AND MITIGATION.

13.1 DEFAULT. The occurrence of any one or more of the following Events of
Default constitutes a default under a Summary Equipment Schedule:

(a) Lessee's failure to pay Rent or other amounts payable by Lessee when due if
that failure continues for five (5) business days after written notice, or

(b) Lessee's failure to perform any other term or condition of the Schedule or
the material inaccuracy of any representation or warranty made by the Lessee in
the Schedule or in any document or certificate furnished to the Lessor hereunder
if that failure or inaccuracy continues for ten (10) business days after written
notice; or

(c) An assignment by Lessee for the benefit of its creditors, the failure by
Lessee to pay its debts when due, the insolvency of Lessee, the filing by Lessee
or the filing against Lessee of any petition under any bankruptcy or insolvency
law or for the appointment of a trustee or other officer with similar powers,
the adjudication of Lessee as insolvent, the liquidation of Lessee, or the
taking of any action for the purpose of the foregoing; or

(d) The occurrence of an Event of Default under any Schedule, Summary Equipment
Schedule or other agreement between Lessee and Lessor or its Assignee or Secured
Party

13.2 REMEDIES. Upon the occurrence of any of the above Events of Default,
Lessor, at its option, may.

(a) enforce Lessee's performance of the provisions of the applicable Schedule by
appropriate court action in law or in equity,

(b) recover from Lessee any damages and or expenses, including Default Costs,

(c) with notice and demand, recover all sums due and accelerate and recover the
present value of the remaining payment stream of all Rent due under the
defaulted Schedule

<PAGE>   6

(discounted at the same rate of interest at which such defaulted Schedule was
discounted with a Secured Party plus any prepayment fees charged to Lessor by
the Secured Party or, if there is no Secured Party, then discounted at 6%)
together with all Rent and other amounts currently due as liquidated damages and
not as a penalty,

(d) with notice and process of law and in compliance with Lessee's security
requirements, Lessor may enter on Lessee's premises to remove and repossess the
Equipment without being liable to Lessee for damages due to the repossession,
except those resulting from Lessor's, its assignees', agents' or
representatives' negligence, and

(e)     pursue any other remedy permitted by law or equity.

The above remedies, in Lessor's discretion and to the extent permitted by law,
are cumulative and may be exercised successively or concurrently.

13.3 MITIGATION. Upon return of the Equipment pursuant to the terms of Section
13.2, Lessor will use its best efforts in accordance with its normal business
procedures (and without obligation to give any priority to such Equipment) to
mitigate Lessor's damages as described below. EXCEPT AS SET FORTH IN THIS
SECTION, LESSEE HEREBY WAIVES ANY RIGHTS NOW OR HEREAFTER CONFERRED BY STATUTE
OR OTHERWISE WHICH MAY REQUIRE LESSOR TO MITIGATE ITS DAMAGES OR MODIFY ANY OF
LESSOR'S RIGHTS OR REMEDIES STATED HEREIN. Lessor may sell, lease or otherwise
dispose of all or any part of the Equipment at a public or private sale for cash
or credit with the privilege of purchasing the Equipment The proceeds from any
sale, lease or other disposition of the Equipment are defined as either:

(a) if sold or otherwise disposed of, the cash proceeds less the Fair Market
Value of the Equipment at the expiration of the Initial Term less the Default
Costs, or

                                      - 2 -

<PAGE>   7

(b) if leased, the present value (discounted at 3 percent (3%) over the U S
Treasury Notes of comparable maturity to the term of the re-lease) of the
rentals for a term not to exceed the Initial Term, less the Default Costs.

Any proceeds will be applied against liquidated damages and any other sums due
to Lessor from Lessee. However, Lessee is liable to Lessor for, and Lessor may
recover, the amount by which the proceeds are less than the liquidated damages
and other sums due to Lessor from Lessee.

14.     ADDITIONAL PROVISIONS.

14.1 BOARD ATTENDANCE. One representative of Lessor will have the right to
attend Lessee's corporate Board of Directors meetings and Lessee will give
Lessor reasonable notice in advance of any special Board of Directors meeting,
which notice will provide an agenda of the subject matter to be discussed at
such board meeting Lessee will provide Lessor with a certified copy of the
minutes of each Board of Directors meeting within thirty (30) days following the
date of such meeting held during the term of this Master Lease

14.2 FINANCIAL STATEMENTS. As soon as practicable at the end of each month (and
in any event within thirty (30) days), Lessee will provide to Lessor the same
information which Lessee provides to its Board of Directors, but which will
include not less than a monthly income statement, balance sheet and statement of
cash flows prepared in accordance with generally accepted accounting principles,
consistently applied (the "Financial Statements"). As soon as practicable at the
end of each fiscal year, Lessee will provide to Lessor audited Financial
Statements setting forth in comparative form the corresponding figures for the
fiscal year (and in any event within ninety (90) days), and accompanied by an
audit report and opinion of the independent certified public accountants
selected by Lessee. Lessee will promptly furnish to Lessor any additional
information (including, but not limited to, tax returns, income statements,
balance sheets and names of principal creditors) as Lessor reasonably believes
necessary to evaluate Lessee's continuing ability to meet financial obligations
After the effective date of the initial registration statement covering a public
offering of Lessee's securities, the term "Financial Statements" will be deemed
to refer to only those statements required by the Securities and Exchange
Commission

14.3 OBLIGATION TO LEASE ADDITIONAL EQUIPMENT. Upon notice to Lessee, Lessor
will not be obligated to lease any Equipment which would have a Commencement
Date after said notice if (i) Lessee is in default under this Master Lease or
any Schedule, (ii) Lessee is in default under any loan agreement, the result of
which would allow the lender or any secured party to demand immediate payment of
any material indebtedness; (iii) there is a material adverse change in Lessee's
credit standing, or (iv) Lessor determines (in reasonable good faith) that
Lessee will be unable to perform its obligations under this Master Lease or any
Schedule.

14.4 MERGER AND SALE PROVISIONS. Lessee will notify Lessor of any proposed
Merger at least sixty (60) days prior to the closing date. Lessor may, in its
discretion, either (i) consent to the assignment of the Master Lease and all
relevant Schedules to the successor entity, or (ii) terminate the Lease and all
relevant Schedules. If Lessor elects to consent to the assignment, Lessee and
its successor will sign the assignment documentation provided by Lessor If
Lessor elects to terminate the Master Lease and all relevant Schedules, then
Lessee will pay Lessor all amounts then due and owing and a termination fee
equal to the present value (discounted at 6%) of the remaining Rent for the
balance of the Initial Term(s) of all Schedules, and will return the Equipment
in accordance with Section 9. Lessor hereby consents to any Merger in which the
acquiring entity has a Moody's Bond Rating of BA3 or better or a commercially
acceptable equivalent measure of creditworthiness as reasonably determined by
Lessor

14.5 ENTIRE AGREEMENT. This Master Lease and associated Schedules and Summary
Equipment Schedules supersede all other oral or written agreements or
understandings between the parties concerning the Equipment including, for
example, purchase orders. ANY AMENDMENT OF THIS MASTER LEASE OR A SCHEDULE, MAY
ONLY BE ACCOMPLISHED BY A WRITING SIGNED BY THE PARTY AGAINST WHOM THE AMENDMENT
IS SOUGHT TO BE ENFORCED

<PAGE>   8

14.6 NO WAIVER. No action taken by Lessor or Lessee will be deemed to constitute
a waiver of compliance with any representation, warranty or covenant contained
in this Master Lease or a Schedule. The waiver by Lessor or Lessee of a breach
of any provision of this Master Lease or a Schedule will not operate or be
construed as a waiver of any subsequent breach.

14.7 BINDING NATURE. Each Schedule is binding upon, and inures to the benefit of
Lessor and its assigns. LESSEE MAY NOT ASSIGN ITS RIGHTS OR OBLIGATIONS

14.8 SURVIVAL OF OBLIGATIONS. All agreements, obligations including, but not
limited to those arising under Section 6.2, representations and warranties
contained in this Master Lease, any Schedule, Summary Equipment Schedule or in
any document delivered in connection with those agreements are for the benefit
of Lessor and any Assignee or Secured Party and survive the execution, delivery,
expiration or termination of this Master Lease.

14.9 NOTICES. Any notice, request or other communication to either party by the
other will be given in writing and deemed received upon the earlier of (1)
actual receipt or (2) three days after mailing if mailed postage prepaid by
regular or airmail to Lessor (to the attention of "the Comdisco Venture Group")
or Lessee, at the address set out in the Schedule, (3) one day after it is sent
by courier or (4) on the same day as sent via facsimile transmission, provided
that the original is sent by personal delivery or mail by the sending party.

14.10 APPLICABLE LAW. THIS MASTER LEASE HAS BEEN, AND EACH SCHEDULE WILL HAVE
BEEN MADE, EXECUTED AND DELIVERED IN THE STATE OF ILLINOIS AND WILL BE GOVERNED
AND CONSTRUED FOR ALL PURPOSES IN ACCORDANCE WITH THE LAWS OF THE STATE OF
ILLINOIS WITHOUT GIVING EFFECT TO CONFLICT OF LAW PROVISIONS. NO RIGHTS OR
REMEDIES REFERRED TO IN ARTICLE 2A OF THE UNIFORM COMMERCIAL CODE WILL BE
CONFERRED ON LESSEE UNLESS EXPRESSLY GRANTED IN THIS MASTER LEASE OR A SCHEDULE.

14.11 SEVERABILITY. If any one or more of the provisions of this Master Lease or
any Schedule is for any reason held invalid, illegal or unenforceable, the
remaining provisions of this Master Lease and any such Schedule will be
unimpaired, and the invalid, illegal or unenforceable provision replaced by a
mutually acceptable valid, legal and enforceable provision that is closest to
the original intention of the parties

14.12 COUNTERPARTS This Master Lease and any Schedule may be executed in any
number of counterparts, each of which will be deemed an original, but all such
counterparts together constitute one and the same instrument. If Lessor grants a
security interest in all or any part of a Schedule, the Equipment or sums
payable thereunder, only that counterpart Schedule marked "Secured Party's
Original" can transfer Lessor's rights and all other counterparts will be marked
"Duplicate"

14.13 LICENSED PRODUCTS. Lessee will obtain no title to Licensed Products which
will at all times remain the property of the owner of the Licensed Products A
license from the owner may be required and it is Lessee's responsibility to
obtain any required license before the use of the Licensed Products. Lessee
agrees to treat the Licensed Products as confidential information of the owner,
to observe all copyright restrictions, and not to reproduce or sell the Licensed
Products

14.14 SECRETARY'S CERTIFICATE. Lessee will, upon execution of this Master Lease,
provide Lessor with a secretary's certificate of incumbency and authority Upon
the execution of each Schedule with a purchase price in excess of $1,000,000,
Lessee will provide Lessor with an opinion from Lessee's counsel in a form
acceptable to Lessor regarding the representations and warranties in Section 8.

14.15 ELECTRONIC COMMUNICATIONS. Each of the parties may communicate with the
other by electronic means under mutually agreeable terms.

14.16 LANDLORD/MORTGAGEE WAIVER. Lessee agrees to provide Lessor with a
Landlord/Mortgagee Waiver with respect to the Equipment Such waiver shall be in
a form satisfactory to Lessor.

14.17 EQUIPMENT PROCUREMENT CHARGES/PROGRESS PAYMENTS. Lessee hereby agrees that
Lessor shall not, by virtue of its entering into this Master Lease, be required
to remit any

<PAGE>   9

payments to any manufacturer or other third party until Lessee accepts the
Equipment subject to this Master Lease

14.18   DEFINITIONS.

ADVANCE - means the amount due to Lessor by Lessee upon Lessee's execution of
each Schedule.

ASSIGNEE - means an entity to whom Lessor has sold or assigned its rights as
owner and Lessor of Equipment.

CASUALTY LOSS - means the irreparable loss or destruction of Equipment

CASUALTY VALUE - means the greater of the aggregate Rent remaining to be paid
for the balance of the lease term or the Fair Market Value of the Equipment
immediately prior to the Casualty Loss. However, if a Casualty Value Table is
attached to the relevant Schedule its terms will control.

COMMENCEMENT DATE - is defined in each Schedule

DEFAULT COSTS - means reasonable attorney's fees and remarketing costs resulting
from a Lessee default or Lessor's enforcement of its remedies

DELIVERY DATE - means date of delivery of Inventory Equipment to Lessee's
address.

EQUIPMENT - means the property described on a Summary Equipment Schedule and any
replacement for that property required or permitted by this Master Lease or a
Schedule.

EVENT OF DEFAULT - means the events described in Subsection 13.1

                                      - 3 -

<PAGE>   10

FAIR MARKET VALUE - means the aggregate amount which would be obtainable in an
arm's-length transaction between an informed and willing buyer/user and an
informed and willing seller under no compulsion to sell.

INITIAL TERM - means the period of time beginning on the first day of the first
full Rent Interval following the Commencement Date for all items of Equipment
and continuing for the number of Rent Intervals indicated on a Schedule.

INTERIM RENT - means the pro-rata portion of Rent due for the period from the
Commencement Date through but not including the first day of the first full Rent
Interval included in the Initial Term

LATE CHARGE - means the lesser of five percent (5%) of the payment due or the
maximum amount permitted by the law of the state where the Equipment is located

LICENSED PRODUCTS - means any software or other licensed products attached to
the Equipment

LIKE EQUIPMENT - means replacement Equipment which is lien free and of the same
model, type, configuration and manufacture as Equipment

MERGER - means any consolidation or merger of the Lessee with or into any other
corporation or entity, any sale or conveyance of all or conveyance of all or
substantially all of the assets or stock of the Lessee by or to any other person
or entity in which Lessee is not the surviving entity.

NOTICE PERIOD - means not less than ninety (90) days nor more than twelve (12)
months prior to the expiration of the lease term.

OWNER - means the owner of Equipment

RENT - means the rent Lessee will pay for each item of Equipment expressed in a
Summary Equipment Schedule either as a specific amount or an amount equal to the
amount which Lessor pays for an item of Equipment multiplied by a lease rate
factor plus all other amounts due to Lessor under this Master Lease or a
Schedule.

RENT INTERVAL - means a full calendar month or quarter as indicated on a
Schedule.

SCHEDULE - means either an Equipment Schedule or a Licensed Products Schedule
which incorporates all of the terms and conditions of this Master Lease.

SECURED PARTY - means an entity to whom Lessor has granted a security interest
for the purpose of securing a loan.

SUMMARY EQUIPMENT SCHEDULE - means a certificate provided by Lessor summarizing
all of the Equipment for which Lessor has received Lessee approved vendor
invoices, purchase documents and/or evidence of delivery during a calendar
quarter which will incorporate all of the terms and conditions of the related
Schedule and this Master Lease and will constitute a separate lease for the
equipment leased thereunder

<PAGE>   11

IN WITNESS WHEREOF, the parties hereto have executed this Master Lease on or as
of the day and year first above written.

OPTICAL MICRO-MACHINES, INC                   COMDISCO, INC.,
as Lessee                                     as Lessor

By /s/ M. Hays                                By /s/ James Labe
  ---------------------------                    -------------------------------
                                                  James Labe, President
                                                  Comdisco Ventures Division

Title CFO                                     Title
      ---                                          -----------------------------

                                       -4-

<PAGE>   12

                                 ADDENDUM TO THE
                MASTER LEASE AGREEMENT DATED AS OF MARCH 23, 1999
                 BETWEEN OPTICAL MICRO-MACHINES, INC., AS LESSEE
                          AND COMDISCO, INC., AS LESSOR

1)      SECTION 4.2 "WARRANTY AND DISCLAIMER OF WARRANTIES."

        First Sentence, line 2, delete the words "Lessee is not in default" and
        insert "no Event of Default has occurred and is continuing, neither
        Lessor nor any person or entity claiming by or through Lessor".

2)      SECTION 5.1 "TITLE."

        Delete the first sentence in its entirety and replace with: "Lessee
        shall have no right, title or interest in the Equipment except as set
        forth in this Master Lease or in any Schedule."

        Third Sentence, line 3, after the words "caused by Lessor", insert "or
        parties claiming by or through Lessor".

3)      SECTION 5.3 "ASSIGNMENT BY LESSOR."

        In Paragraph (a), second sentence, lines 3 and 4, delete the words
        "Lessee is not in default and the Secured Party continues to receive all
        Rent payable under the Schedule." and replace with "no Event of Default
        has occurred and is continuing".

        In Paragraph (b), insert the following clause at the beginning thereof:
        "Upon written notice from Lessor,".

4)      SECTION 6.1 "NET LEASE."

        At the end of second sentence insert the following, ";provided, however,
        that Lessee's ability to bring suit against Lessor for breach of this
        Master Lease shall not be affected by this Section 6.1.".

5)      SECTION 6.2 "TAXES AND FEES."

        First Sentence, line 3 delete "accrued for or arising" and replace with
        "attributable to periods".

6)      SECTION 7.1 "CARE, USE AND MAINTENANCE; INSPECTION BY LESSOR."

        Delete the fourth sentence in its entirety and replace with: "With
        Lessor's prior written consent, Lessee may have the Equipment maintained
        by a party other than the manufacturer. Lessor approves Lessee as such
        maintenance contractor.".

7)      SECTION 8 "REPRESENTATIONS AND WARRANTIES OF LESSEE."

<PAGE>   13

        Paragraph (f) insert the following at the end thereof: ", except where
        the failure to do so would not reasonably be expected to have a material
        adverse effect.".

8)      SECTION 9 "DELIVERY AND RETURN OF EQUIPMENT."

        Second sentence, line 3, after the words "to Lessor's" insert the word
        "reasonable".

        Fourth sentence, line 1, after the words "under Section 2" insert
        ",subject to Lessee's security requirements,".

        Insert the following sentence at the end of Section 9: "All such
        demonstrations will be conducted in such manner as to minimize any
        interference with Lessee's operations.".

9)      SECTION 11 "INDEMNITY."

        Second sentence, in line 3, after the words "negligent acts" insert "or
        willful conduct".

10)     SECTION 13.1 "DEFAULT."

        Paragraph (c), insert the following at the end thereof: "(and any such
        involuntary event has not been dismissed or vacated within 30 days)".

11)     SECTION 13.2 "REMEDIES."

        Paragraph (c), line 5, delete "6%" and insert "U.S. Treasury Notes of
        comparable maturity to the remaining term of the defaulted Schedule".

12)     SECTION 13.3 "MITIGATION."

        Paragraph (b), lines 2 and 3, delete "3 percent (3%) over the U.S.
        Treasury Notes of comparable maturity to the term of" and insert, "the
        same interest rate implicit in".

13)     SECTION 14.1 "BOARD ATTENDANCE"

        Delete this section in its entirety.

14)     SECTION 14.3 "OBLIGATION TO LEASE ADDITIONAL EQUIPMENT."

        In line 3, delete "Lessee is in default" and replace with "an Event of
        Default has occurred or is continuing".

        In line 6 after the words "material indebtedness" insert "for borrowed
        money in an amount in excess of $75,000".

15)     SECTION 14.4 "MERGER AND SALE PROVISIONS."

        In line 2, delete "sixty (60)" and replace with "twenty (20)".

16)     SECTION 14.6 "NO WAIVER."

<PAGE>   14

        First sentence, insert the following at the beginning thereof: "Except
        for a written waiver,".

17)     SECTION 14.7"BINDING NATURE."

        Second sentence, insert the following at the end thereof: "EXCEPT IN
        ACCORDANCE WITH SECTION 14.4.".

18)     SECTION 14.9 "NOTICES."

        Line 3, delete "three (3)" and insert "five (5)"; delete "postage
        prepaid by regular or air mail" and insert "certified mail, return
        receipt requested".

19)     SECTION 14.13"LICENSED PRODUCTS."

        After the first sentence insert: "To the extent that Lessor, by reason
        of its ownership of the Equipment, holds any license to a Licensed
        Product, Lessor shall obtain the right for Lessee to use any such
        Licensed Product for the duration of the lease term.".

        Third sentence, line 2, after the word "owner" insert "of such Licensed
        Product".

20)     SECTION 14.18 "DEFINITIONS."

        "Delivery Date" revise the word "Inventory" to read "inventory".

        "Like Equipment" delete the words "of the same model, type,
        configuration, and manufacture as Equipment." and replace with "of the
        same manufacture and of a type, model and feature configuration having a
        capability and value equal to or greater than the Equipment being
        replaced.".

Except as amended hereby, all other terms and conditions of the Master Lease
Agreement remain in full force and effect.

OPTICAL MICRO-MACHINES, INC.             COMDISCO, INC.
AS LESSEE                                AS LESSOR

By: /s/ M. Hayes                         By: /s/ James Labe
   ----------------------------              ---------------------------------
                                                 James Labe, President
                                             Comdisco Ventures Division

Title: CFO                               Title:
         ---                                   -------------------------------

Date: 3/26/99                            Date: APR 07 1999
      -------                                   -----------

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