Document:

<PAGE>

                                                                   EXHIBIT 10.42

NEITHER THIS NOTE NOR ANY SECURITIES WHICH MAY BE ISSUED UPON CONVERSION HEREOF
HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"),
OR REGISTERED OR OTHERWISE QUALIFIED UNDER ANY STATE SECURITIES LAW. NEITHER
THIS NOTE NOR ANY SUCH SECURITIES MAY BE SOLD OR OFFERED FOR SALE IN THE ABSENCE
OF AN EFFECTIVE REGISTRATION STATEMENT UNDER THE ACT AND REGISTRATION OR OTHER
QUALIFICATION UNDER ANY APPLICABLE STATE SECURITIES LAWS, OR AN OPINION OF
COUNSEL SATISFACTORY TO THE ISSUER THAT SUCH REGISTRATION OR OTHER QUALIFICATION
IS NOT REQUIRED.

THIS NOTE AND ALL SECURITIES WHICH MAY BE ISSUED UPON CONVERSION HEREOF ARE
SUBJECT TO A MARKET STAND-OFF RESTRICTION AS SET FORTH IN AN ASSET PURCHASE
AGREEMENT BETWEEN THE ISSUER AND THE ORIGINAL HOLDER OF THIS NOTE, A COPY OF
WHICH MAY BE OBTAINED AT THE PRINCIPAL OFFICE OF THE ISSUER. AS A RESULT OF SUCH
AGREEMENT, THIS NOTE AND ALL SECURITIES WHICH MAY BE ISSUED UPON CONVERSION
HEREOF MAY NOT BE TRADED PRIOR TO THE EXPIRATION OF SUCH STAND-OFF PERIOD AFTER
THE EFFECTIVE DATE OF THE INITIAL PUBLIC OFFERING OF THE COMMON STOCK OF THE
ISSUER HEREOF. SUCH RESTRICTION IS BINDING ON TRANSFEREES OF ANY SUCH
SECURITIES.

                                 DOVEBID, INC.

                   CONVERTIBLE SUBORDINATED PROMISSORY NOTE

 US$750,000                                                        July 28, 2000

     DoveBid, Inc., a Delaware corporation (the "Company"), with offices at 1241
East Hillsdale Blvd., Foster City, CA 94404, for value received, promises to pay
to the order of MasonGreene Australasia Pty Ltd CAN 065 348 736, a Victorian
company ("Payee") at such address as Payee may designate, One Million U.S.
Dollars and No Cents ($1,000,000.00), plus interest thereon calculated from the
date hereof until paid at an annual rate equal to the minimum rate established
pursuant to Section 1274(d) of the Internal Revenue Code of 1986, as amended, as
of the date hereof, compounded annually. Principal and accrued interest will be
due and payable in lawful money of the United States in full on the two-year
anniversary of the date of this Note (the "Maturity Date"), unless this Note
shall have been previously converted pursuant to Section 2 below, in which case
all outstanding principal under this Note and all accrued interest thereon shall
be satisfied in full by virtue of such conversion and the issuance and delivery
of fully paid and non-assessable shares of Conversion Stock to the holder of
this Note as set forth in Section 2 below. Payments by the Company shall be
applied first to any and all accrued interest through the payment date and
second to the principal remaining due hereunder.

     The following is a statement of the rights of the holder of this Note and
the conditions to which this Note is subject, and to which the holder hereof, by
the acceptance of this Note, agrees:
<PAGE>

     1.   Definitions.  As used in this Note, the following terms, unless the
          -----------
context otherwise requires, have the following meanings:

          1.1  "Company" includes any corporation or other entity which succeeds
to or assume the obligations of the Company under this Note.

          1.2  "Conversion Stock" shall mean shares of Common Stock of the
Company of the same class of common stock that is registered by the Company
pursuant to an Initial Public Offering.

          1.3  "Conversion Price" shall mean the price per share that is the
exact middle of the price range stated in the Company's final amended
registration statement on Form S-1, Form SB-1 or a similar successor form
pertaining to an Initial Public Offering that closes on before the Maturity
Date. No conversion shall occur and there is therefore no Conversion Price with
respect to an Initial Public Offering that closes after the Maturity Date.

          1.4  "Noteholder," "holder," or similar terms, when the context refers
to a holder of this Note, shall mean any person who shall at the time be the
registered holder of this Note.

          1.5  "Initial Public Offering" shall mean the closing of a sale of
Common Stock pursuant to a registration statement on Form S-1, Form SB-1 or SB-2
(or any similar or successor form) under the Securities Act of 1933, as amended
(the "Securities Act"), for an underwritten initial public offering.

          1.6  "Subordination Agreement" shall mean the Subordination Agreement
attached hereto as Annex A and incorporated by reference herein.
                   -------

     2.   Conversion.
          ----------

          2.1  Mandatory Conversion. This Note and all of the outstanding
               --------------------
principal and accrued and unpaid interest on and under this Note shall be
converted into Conversion Stock at the Conversion Price immediately prior to the
first closing of an Initial Public Offering before the Maturity Date. For
informational purposes, the Company shall provide the Noteholder with written
notice (at the most recent address for the Noteholder provided to the Company by
the Noteholder in writing) (i) within seven days after it files with the
Securities and Exchange Commission ("SEC") any registration statement on Form S-
1, Form SB-1 or Form SB-2 (or any similar or successor form) for an Initial
Public Offering, and (ii) reasonably promptly following the first closing of an
Initial Public Offering. Conversion as described in this Section 2.1 shall occur
only upon the closing of an Initial Public Offering, provided that (i) upon the
first closing of an Initial Public Offering, the conversion shall be deemed to
have occurred immediately prior to such first closing of such Initial Public
Offering, and (ii) as a condition precedent or condition subsequent to
conversion (the election between which type of condition shall be the Company's
sole election in the Company's sole discretion), the Noteholder must surrender
this Note for conversion at the principal office of the Company. Incident to any
conversion, the Conversion Stock will have those rights and privileges, and be
subject to those restrictions, of the shares of Common Stock as set forth in the
Company's Certificate of Incorporation, as amended from time to time, and the
Noteholder will receive the rights and be subject to the obligations applicable
to the purchasers of Common Stock, provided that the sale restriction referred
to in Section 5 below shall apply to the Conversion Stock. This Note shall not
be convertible and shall not be

                                       2
<PAGE>

converted into Conversion Stock if there is not an Initial Public Offering on or
before the Maturity Date.

          2.2  No Fractional Shares.  No fractional shares will be issued on
               --------------------
conversion of this Note. If on any conversion of this Note a fraction of a share
results, the Company will pay the cash value of that fractional share,
calculated on the basis of the applicable Conversion Price.

          2.3  Reservation of Stock.  Prior to any conversion of this Note
               --------------------
pursuant to Section 2.1 above, the Company will take such corporate action and
obtain such government consents and approvals as may, in the reasonable opinion
of its counsel, be necessary to authorize the issuance of a sufficient number of
shares of Conversion Stock into which this Note is to convert pursuant to
Section 2.1 above.

          2.4  Fully Paid Shares; Certificates.  All shares of Conversion Stock
               -------------------------------
issued upon the conversion of this Note shall be validly issued, fully paid and
non-assessable. The certificates representing the shares of Conversion Stock
issued upon conversion hereof shall be delivered to the holder against surrender
of this Note. The holder, by accepting this Note, undertakes and agrees to
accept such shares of Conversion Stock in full satisfaction of the outstanding
principal and accrued interest thereon in accordance with the terms of this
Note. Anything to the contrary in this Note notwithstanding, the Company's
obligation to issue shares of Conversion Stock to any holder of this Note is
expressly conditioned upon compliance of such issuance with applicable federal
and state securities laws without registration or other qualification
thereunder.

          2.5  No Rights or Liabilities as Shareholder.  This Note does not by
               ---------------------------------------
itself entitle the Noteholder to any voting rights or other rights as a
shareholder of the Company. In the absence of conversion of this Note, no
provisions of this Note, and no enumeration herein of the rights or privileges
of the holder shall cause such holder to be a shareholder of the Company for any
purpose by virtue hereof.

          2.6  No Other Conversion.  The conversion described in this Section 2
               -------------------
shall constitute the sole methods by which this Note will convert.

     3.   Subordination.  This Note and the indebtedness evidence by this Note
          -------------
are subordinated to the prior payment in full of all or substantially all other
indebtedness of the Company pursuant to the terms of a Subordination Agreement
in the form attached hereto as Annex A and incorporated herein by reference.
                               -------

     4.   Prepayment.  This Note may be prepaid, in its entirety (including the
          ----------
principal sum and interest accrued to the date of payment) without penalty or
premium at any time subject to the limitations on payment in the Subordination
Agreement.

     5.   Securities Matters; Restrictions on Transfers.  The Noteholder
          ---------------------------------------------
acknowledges that this Note has been issued pursuant to that certain Asset
Purchase Agreement, dated as of [July __, 2000], by and among DoveBid, DoveBid
Australasia Pty Ltd ACN #, a Victorian company and wholly owned subsidiary of
DoveBid, Payee, C. N. Mason & Associates Pty Ltd ACN 007 145 191, a Victorian
company and Christopher N. Mason (the "Purchase Agreement") in reliance on,
among other things, the representations, warranties and covenants of the Payee
therein, and that this Note is and the Conversion Stock upon their issuance will
be subject to restrictions on transfer in the Securities Act and state
securities

                                       3
<PAGE>

laws, and under the Purchase Agreement, including without limitation, market-
standback restrictions therein. Such restrictions will be binding on any
permitted transferee of this Note and/or the Conversion Stock, and the Company
may place legends on any certificates representing this Note or the Conversion
Stock, and may impose stop-transfer instructions with respect to such
securities.

     6.   Usury Savings Clause.  The Company and the Noteholder intend to comply
          --------------------
at all times with applicable usury laws. If at any time such laws would render
usurious any amounts due under this Note under applicable law, then it is the
Company's and the Noteholder's express intention that the Company not be
required to pay interest on this Note at a rate in excess of the maximum lawful
rate, that the provisions of this Section 6 shall control over all other
provisions of this Note which may be in apparent conflict hereunder, that such
excess amount shall be immediately credited to the principal balance of this
Note (or, if this Note has been fully paid, refunded by the Noteholder to the
Company), and the provisions hereof shall immediately be reformed and the
amounts thereafter decreased, so as to comply with the then applicable usury
law, but so as to permit the recovery of the fullest amount otherwise due under
this Note.

     7.   General Provisions.
          ------------------

          7.1  Notices.  All notices and other communications required or
               -------
permitted hereunder shall be effective upon receipt (or refusal of receipt) and
shall be in writing and delivered by depositing the same in United States mail,
addressed to the party to be notified, postage prepaid and registered or
certified with return receipt requested, by delivering the same in person to
such party or to an officer or agent of such party, as follows:

               (i)  If mailed or delivered to the Company, to each of the
following, using two separate mailings or deliveries:

                    DoveBid, Inc.
                    1241 East Hillsdale Blvd.
                    Foster City, California 94404
                    Attn: Cory Ravid, Chief Financial Officer

                    DoveBid, Inc.
                    1241 East Hillsdale Blvd.
                    Foster City, California 94404
                    Attn: Anthony Capobianco, General Counsel

               (ii) If mailed or delivered to the Payee, addressed to it at the
following address number:

                    ______________________________
                    ______________________________
                    ______________________________

               with a copy to:

                                       4

<PAGE>

or to such other address as any party hereto shall specify in writing to the
other parties hereto pursuant to this Section 7.1 from time to time. Such notice
shall be effective only upon actual receipt.

          7.2  Severability; Headings.  In case any provision of this Note shall
               ----------------------
be invalid, illegal or unenforceable, the validity, legality and enforceability
of the remaining provisions shall not in any way be affected or impaired
thereby, unless to do so would deprive the Noteholder or the Company of a
substantial part of its bargain. All headings used herein are used only for
convenience and shall not be used to construe or interpret this Note.

          7.3  Assignment.  Neither this Note nor any right or obligation
               ----------
hereunder may be assigned or delegated by Payee without the prior written
consent of Company. Neither this Note nor any right or obligation hereunder may
be assigned or delegated by Company without the prior written consent of Payee,
except pursuant to a merger in which Company is a party, or pursuant to a sale
or other transfer of substantially all of the assets of Company. Any purported
assignment in violation of this paragraph shall be void.

          7.4  Amendment; Waiver.  Any provision of this Note may be amended or
               -----------------
modified only by a writing signed by both Company and Payee. Compliance with any
provision of this Note may be waived only by a writing signed by the party
against which enforcement of the change, waiver, discharge or termination is
sought.

          7.5  Governing Law.  This Note shall be construed and enforced in
               -------------
accordance with, and governed by, the internal laws of the State of California,
excluding that body of law applicable to conflicts of laws.

          7.6  United States Dollars.  All dollar amounts set forth in this Note
               ---------------------
are United States Dollars.

              [The rest of this page is intentionally left blank]

                                       5
<PAGE>

     IN WITNESS WHEREOF, each party has caused this Note to be executed as of
the date first set forth above.

                                   DOVEBID, INC.

                                   By: /s/ Anthony Capobianco
                                      ------------------------------------------
                                   Name:  Anthony Capobianco
                                   Title: Vice President and General Counsel

Acknowledged and Agreed to:

MASONGREENE AUSTRALASIA PTY LTD

By: /s/ Peter Cook
   -----------------------------
   President
<PAGE>

                                                                      Annex A to
                                        Convertible Subordinated Promissory Note

                            SUBORDINATION AGREEMENT

     This Subordination Agreement (this "Subordination Agreement") is made as of
July __, 2000 by and between DoveBid, Inc. (the "Company") and Masongreene
Australasia Pty Ltd ACN 065 348 736, a Victorian company ("Creditor"), for the
benefit of all holders of Senior Debt (as defined below).

          A.   The Company concurrently herewith is issuing to Creditor its
Convertible Subordinated Promissory Note dated as of the same date as this
Subordination Agreement (collectively, the "Notes");

          B.   It is a term of the Notes that any and all amounts owing to
Creditor (or any subsequent holder of the Notes) under or pursuant to the Notes
be subordinated in right of payment to the prior payment in full of any and all
Senior Debt of the Company (as defined below); and

          C.   This Subordination Agreement sets forth the particular terms of
such subordination, and this Agreement is incorporated into and constitutes a
part of the Notes.

          Now, therefore, the parties agree as follows:

     1.   Subordination; Note Subordinated to Senior Debt.  Notwithstanding
          -----------------------------------------------
anything to the contrary contained in either of the Notes or in this Annex A,
the Company covenants and agrees and each holder of a Note, by such holder's
acceptance thereof likewise covenants and agrees, that such Note shall be and is
issued subject to the provisions of this Subordination Agreement; and each
person holding such Note, whether upon original issue or upon transfer,
assignment or exchange thereof accepts and agrees that all payments of
Subordinated Obligations (all capitalized terms used in this Subordination
Agreement that are not defined above are used as defined in Section 9 below) by
the Company shall, to the extent and in the manner set forth in this
Subordination Agreement, be subordinated and junior in right of payment, to the
prior payment in full in cash or cash equivalents of all amounts payable on or
under any and all Senior Debt (including principal, interest, fees, commissions,
expenses and indemnities in respect thereof and any interest accruing subsequent
to the commencement or filing of any petition in any bankruptcy or insolvency
proceeding at the rate provided for in the documents governing such Senior Debt,
whether or not such interest is an allowed claim enforceable against the debtor
in a bankruptcy case under Title 11 of the United States Code).

          To the extent any payment of Senior Debt (whether by or on behalf of
the Company, as proceeds of security or enforcement of any right of setoff or
otherwise) is declared to be fraudulent or preferential, set aside or required
to be paid to a trustee, receiver or other similar party under any bankruptcy,
insolvency, receivership, fraudulent conveyance or similar law, then if such
payment is recovered by, or paid over to, such trustee, receiver or other
similar party, the Senior Debt or part thereof originally intended to be
satisfied shall be deemed to be reinstated and outstanding as if such payment
had not occurred. To the extent the obligation to repay any Senior Debt is
declared to be fraudulent, invalid or otherwise set aside under any bankruptcy,
insolvency, receivership, fraudulent conveyance or similar law,
<PAGE>

then the obligations so declared fraudulent, invalid or otherwise set aside (and
all other amounts which would come due with respect thereto had such obligations
not been so affected) shall be deemed to be reinstated and outstanding as Senior
Debt for all purposes hereof as if such declaration, invalidity or setting aside
had not occurred.

     2.   No Payment on Securities in Certain Circumstances.
          -------------------------------------------------

          (a)  No direct or indirect payment by or on behalf of the Company of
Subordinated Obligations, whether pursuant to the terms of the Notes or upon
acceleration or otherwise shall be made if, at the time of such payment there
exists a default in the payment of all or any portion of the obligations on any
Senior Debt and such default shall not have been cured or waived or the benefits
of this sentence waived by or on behalf of the holder of such Senior Debt.

          (b)  In the event of any other default with respect to any Senior Debt
pursuant to which the maturity thereof may be accelerated, upon the receipt by
the holder of the Notes of written notice from a Designated Senior Creditor or
the Company, no payment of Subordinated Obligations may be made by or on behalf
of the Company for a period (a "Payment Blockage Period") commencing on the date
of receipt of such notice and ending 270 days thereafter (unless such Payment
Blockage Period shall be terminated by written notice to the holder from a
Designated Senior Creditor or all defaults with respect to Senior Debt shall
have been cured or waived). For purposes of this Section 2(b), after the
commencement of a Payment Blockage Period, no subsequent Payment Blockage Period
may be commenced unless a period of 30 consecutive days has passed since the
termination of the immediately preceding Payment Blockage Period. Subject to the
preceding sentence, successive Payment Blockage Periods may be commenced
hereunder.

          (c) In the event that, notwithstanding the foregoing provisions of
this Section 2, any payment shall be received by any holder of a Note when such
payment is prohibited by Section 2(a) or 2(b) of this Subordination Agreement,
such payment shall be held for the benefit of, and shall be paid over or
delivered to, the holders of Senior Debt or their respective representatives, or
to the trustee or trustees under any indenture pursuant to which any of such
Senior Debt may have been issued, as their respective interests may appear.

     3.   Payment Over of Proceeds Upon Dissolution, Etc.
          ----------------------------------------------

          (a)  Upon any payment or distribution of assets or securities of the
Company, as the case may be, of any kind or character, whether in cash, property
or securities, upon any dissolution or winding-up or total or partial
liquidation or reorganization of the Company, whether voluntary or involuntary
or in bankruptcy, insolvency, receivership or other proceeding, all amounts due
or to become due upon all Senior Debt (including interest accruing subsequent to
the commencement or filing of any petition in any bankruptcy or insolvency
proceeding at the rate provided for in the documents governing such Senior Debt,
whether or not such interest is an allowed claim enforceable against the debtor
in a bankruptcy case under Title 11 of the United States Code) shall first be
indefeasibly paid in full in cash or cash equivalents, before the holder of any
Note shall be entitled to receive any payment on account of the Subordinated
Obligations, or any payment to acquire a Note for cash, property or securities
or any distribution with respect to a Note of any cash, property or securities.
Before any payment may be made by or on behalf of the Company of the
Subordinated Obligations, upon any such dissolution, winding-up, liquidation or

                                       2
<PAGE>

reorganization, any payment or distribution of assets or securities of the
Company of any kind or character, whether in cash, property or securities, to
which the holder of a Note would be entitled, except for the provisions of this
Subordination Agreement, shall be made by the Company or by any receiver,
trustee in bankruptcy, liquidating trustee, agent or other Person making such
payment or distribution, or by the holder of such Note if received by it,
directly to the holders of Senior Debt (pro rata to such holders on the basis of
the respective amounts of Senior Debt held by such holders) or their respective
representatives, or to the trustee or trustees under any indenture pursuant to
which any of such Senior Debt may have been issued, as their respective
interests may appear, to the extent necessary to pay all such Senior Debt
indefeasibly in full in cash or cash equivalents after giving effect to any
concurrent payment, distribution or provision therefor to or for the holders of
such Senior Debt.

          (b)  In the event that, notwithstanding the foregoing provision of
this Section 3 prohibiting such payment or distribution, any payment or
distribution of assets or securities of the Company of any kind or character,
whether in cash, property or securities, shall be received by the holder of a
Note at a time when such payment or distribution is prohibited by Section 3(a)
of this Subordination Agreement and before all obligations in respect of Senior
Debt are indefeasibly paid in full in cash or cash equivalents, such payment or
distribution shall be received and held for the benefit of, and shall be paid
over or delivered to, the holders of Senior Debt (pro rata to such holders on
the basis of the respective amount of Senior Debt held by such holders) or their
respective representatives, or to the trustee or trustees under any indenture
pursuant to which any of such Senior Debt may have been issued, as their
respective interests may appear, for application to the payment of Senior Debt
remaining unpaid until all such Senior Debt has been indefeasibly paid in full
in cash or cash equivalents, after giving effect to any concurrent payment,
distribution or provision therefor to or for the holders of such Senior Debt.

          (c)  For purposes of this Subordination Agreement, the words "cash,
property or securities" shall not be deemed to include, so long as the effect of
this Section 3(c) is not to cause any Note to be treated in any case or
proceeding or similar event described in this Subordination Agreement as part of
the same class of claims as the Senior Debt or any class of claims on a parity
with or senior to the Senior Debt for any payment or distribution, securities of
the Company or any other corporation provided for by a plan of reorganization or
readjustment which are subordinated, to at least the same extent as such Note to
the payment of all Senior Debt then outstanding; provided that (i) if a new
corporation or entity results from such reorganization or readjustment, such
corporation or entity assumes the Senior Debt and (ii) the rights of the holders
of the Senior Debt are not, without the consent of such holders, altered by such
reorganization or readjustment. The consolidation of the Company with, or the
merger of the Company with or into, a corporation (or other entity) or the
liquidation or dissolution of the Company following the conveyance or transfer
of its property as an entirety, or substantially as an entirety, to another
corporation or entity upon the terms and conditions, if any, allowed by the
Senior Debt shall not be deemed a dissolution, winding-up, liquidation or
reorganization for the purposes of this Section if such other corporation shall,
as a part of such consolidation, merger, conveyance or transfer, comply with the
conditions stated in the Senior Debt.

     4.   Subrogation.  Upon the indefeasible payment in full of all Senior Debt
          -----------
in cash or cash equivalents, the holder of the Notes shall be subrogated to the
rights of the holders of Senior Debt to receive payments or distributions of
cash, property or securities of the Company made on such Senior Debt pro rata
based on the aggregate outstanding balances of

                                       3
<PAGE>

the Notes at such time until the principal of, premium, if any, and interest on
the Notes shall be paid in full; and, for the purposes of such subrogation, no
payments or distributions to the holders of the Senior Debt of any cash,
property or securities to which the holder of any Note would be entitled except
for the provisions of this Subordination Agreement and no payment over pursuant
to the provisions of this Subordination Agreement to the holders of Senior Debt
by the holder of any Note shall, as between the Company, its creditors other
than holders of Senior Debt, and the holder of such Note, be deemed to be a
payment by the Company to or on account of the Senior Debt. It is understood
that the provisions of this Subordination Agreement are and are intended solely
for the purpose of defining the relative rights of the holders of Notes, on the
one hand, and the holders of the Senior Debt, on the other hand.

     5.   Obligations of Company Unconditional.  Nothing contained in this
          ------------------------------------
Subordination Agreement is intended to or shall impair, as among the Company and
holders of Notes, the obligation of the Company, which is absolute and
unconditional, to pay to the holder of the Notes the principal of, premium, if
any, and interest on the Notes as and when the same shall become due and payable
in accordance with their terms, or is intended to or shall affect the relative
rights of the holder of the Notes and creditors of the Company other than the
holders of the Senior Debt.

     6.   Reliance on Judicial Order or Certificate of Liquidating Agent.  Upon
          --------------------------------------------------------------
any payment or distribution of assets or securities referred to in this
Subordination Agreement, each holder of a Note shall be entitled to rely upon
any order or decree made by any court of competent jurisdiction in which
bankruptcy, dissolution, winding-up, liquidation or reorganization proceedings
are pending, or upon a certificate of the receiver, trustee in bankruptcy,
liquidating trustee, agent or other person making such payment or distribution,
delivered to such holder of such Note for the purpose of ascertaining the
persons entitled to participate in such distribution, the holders of the Senior
Debt and other indebtedness of the Company, the amount thereof or payable
thereon, the amount or amounts paid or distributed thereon and all other facts
pertinent thereto or to this Subordination Agreement.

     7.   Subordination Rights Not Impaired by Acts or Omissions of the Company
          ---------------------------------------------------------------------
or Holders of Senior Debt.  No right of any present or future holders of any
-------------------------
Senior Debt to enforce subordination as provided herein will at any time in any
way be prejudiced or impaired by any act or failure to act on the part of the
Company or by any act or failure to act by any such holder, or by any
noncompliance by the Company with the terms of any Notes, regardless of any
knowledge thereof which any such holder may have or otherwise be charged with.
The provisions of this Subordination Agreement are intended to be for the
benefit of, and shall be enforceable directly by, the holders of Senior Debt.

     8.   No Waiver of Subordination Provisions.  Without in any way limiting
          -------------------------------------
the generality of Section 7, the holders of Senior Debt may, at any time and
from time to time, without the consent of or notice to any holder of any Note,
without incurring responsibility to the holder of any Note and without impairing
or releasing the subordination provided in this Subordination Agreement or the
obligations hereunder of the holder(s) of the Notes to the holders of Senior
Debt, do any one or more of the following: (a) change the manner, place or terms
of payment or extend the time of payment of, or renew or alter, Senior Debt or
any instrument evidencing the same or any agreement under which Senior Debt is
outstanding or secured; (b) sell, exchange, release or otherwise deal with any
property pledged, mortgaged or otherwise securing Senior Debt; (c) release any
Person liable in any manner for the collection of Senior Debt and (d) exercise
or refrain from exercising any rights against the Company and any other Person.

                                       4
<PAGE>

     9.   Definitions.  As used in this Subordination Agreement, the terms set
          -----------
forth below shall have the respective meanings set forth opposite such terms
below:

     "Designated Senior" means any holder of Senior Debt or any agent, trustee
or other similar representative for such a holder.

     "Person" means an individual, a corporation, a partnership, an association,
a trust or any other entity or organization, including a government or political
subdivision or an agency or instrumentality thereof.

     "Senior Debt" means all debt and other monetary obligations of the Company
(including, without limitation, under any note, credit agreement, mortgage,
indenture, instrument or contract of any type or nature), and the Company's
guarantee of any debt or monetary obligation of any subsidiary of the Company,
in each case whether now existing or hereafter arising, and in each case
including all principal, interest, fees and expenses owing on or in connection
with such debt or other monetary obligations, as the same may be modified,
amended, restated or supplemented from to time; provided that the term "Senior
Debt" shall not include (a) any debt or other monetary obligation that expressly
provides in writing that it is subordinate to or pari passu with the Notes, (b)
                                                 ---- -----
any debt of the Company which, when incurred and without respect to any election
under Section 1111(b) of Title 11, United States Code, was without recourse to
the Company, (c) any debt of the Company to a subsidiary of the Company, (d) any
debt for borrowed money to any employee or director of the Company, and (e) any
accounts payable to trade creditors created or assumed by the Company or any
subsidiary of the Company in the ordinary course of business in connection with
the obtaining of materials or services.

     "Subordinated Obligations" means principal and interest payable under or in
respect of the Notes, any fees, expenses or rights of reimbursement under or in
respect of the Notes, and all other claims, rights of rescission or other rights
of action under or in respect of the Notes.

     10.  Suspension of Certain Remedies.  Notwithstanding anything to the
          ------------------------------
contrary contained elsewhere in the Notes, until all Senior Debt has been
indefeasibly repaid in full, no holder of any Note may commence or join with any
creditor in commencing, any bankruptcy, insolvency or similar proceeding with
respect to the Company or any of its subsidiaries.

     11.  Amendment, Supplement and Waiver.  This Subordination Agreement may be
          --------------------------------
amended, modified or supplemented only by a written instrument executed by the
Company, the holder of each Note, and each holder of Senior Debt affected
thereby.

     12.  Successors and Assigns.  This Subordination Agreement shall be binding
          ----------------------
upon and inure to the benefit of the successors and assigns of the parties
hereto.

     13.  Attorney's Fees.  If the holder of any Note files any claim to enforce
          ---------------
its rights under such Note, the holder shall be entitled to recover its
reasonable attorneys' fees from the Company; provided that the Company shall not
be required to reimburse the holder for any attorney's fees incurred or actions
taken at a time when payments are not permitted to be made on such Note pursuant
to this Subordination Agreement or for any assertion of rights by the holder
under such Note to the extent the rights being asserted are not permitted to be
exercised by virtue of the provisions of this Subordination Agreement.

                                       5
<PAGE>

     14.  Governing Law.  This Subordination Agreement shall be construed and
          -------------
enforced in accordance with, and governed by, the internal laws of the State of
California, excluding that body of law applicable to conflicts of laws.

              [The rest of this page is intentionally left blank]

                                       6
<PAGE>

     IN WITNESS WHEREOF, each party has caused this Subordination Agreement to
be executed as of the date first set forth above.

                                       DOVEBID, INC.

                                       By: ______________________________
                                       Name:  Anthony Capobianco
                                       Title: Vice President and General Counsel

                                       CREDITOR:

                                       MASONGREENE AUSTRALASIA PTY
                                       LTD

                                       By: _______________________________
                                       ________

                                       1<PAGE>

*Confidential treatment has been requested with respect to certain information
contained in this document. Confidential portions have been omitted from the
public filing and have been filed separately with the Securities and Exchange
Commission.

                                                                   EXHIBIT 10.51

                   ASSET PURCHASE AND CO-MARKETING AGREEMENT

     THIS ASSET PURCHASE AND CO-MARKETING AGREEMENT (this "Agreement") is made
as of March 7, 2000 (the "Effective Date"), by and between DoveBid, Inc., a
Delaware corporation with offices at 1241 East Hillsdale Blvd. Foster City,
California 94404 ("DoveBid"), and Comdisco, Inc., a Delaware corporation with
offices at 6111 North River Road, Rosemont, IL 60018 ("Comdisco").

                                   RECITALS

     A.   DoveBid and certain investors, including Comdisco, entered into that
certain Series C Preferred Stock Purchase Agreement dated February 25, 2000 (the
"Stock Purchase Agreement"), pursuant to which DoveBid agreed to sell to
Comdisco and Comdisco agreed to purchase from DoveBid a specified number of
shares of DoveBid's Series C Preferred Stock.

     B.   Under the Stock Purchase Agreement, DoveBid's obligation to sell
shares of its Series C Preferred Stock to Comdisco is subject to DoveBid and
Comdisco entering into this Agreement, pursuant to which Comdisco will sell to
DoveBid certain of the specified assets as consideration for such stock.

     C.   Comdisco has leased certain of the specified assets to [*] and
Comdisco is free to sell the assets subject to the terms of the [*].

     D.   DoveBid desires to purchase certain of the specified assets for cash
consideration.

     E.   DoveBid and Comdisco also desire to enter into this Agreement to
establish the terms of a co-marketing relationship between the parties.

     NOW, THEREFORE, in consideration of the above recitals and the mutual
covenants hereinafter set forth, DoveBid and Comdisco hereby agree as follows:

1.   CERTAIN DEFINITIONS
     -------------------

     The following terms shall have the following meanings in this Agreement:

*Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.
<PAGE>

     "Applicable Law" means all applicable provisions of all statutes, laws
(including the common law), rules, regulations, ordinances, codes of any
Governmental Authority, and all orders, decisions, injunctions, judgments,
findings, awards and decrees of or agreements with any Governmental Authority.

     "Cash Consideration" means the amount equal to [*], payable by DoveBid to
Comdisco pursuant to Section 3.1.

     "Comdisco Affiliate" means any company in which Comdisco holds: (i) a
majority ownership; or (ii) an ownership interest equal to or in excess of
twenty percent (20%) combined with either: (A) voting control or (B) two (2) or
more board of directors' seats.

     "Encumbrances" means all mortgages, pledges, liens, licenses, rights of
possession, security interests, restrictions, encumbrances, charges, title
retention, conditional sale or other security arrangements and all claims,
restrictions, or agreements of any nature whatsoever.

     "Governmental Authority" means any national government, federal, state
other political subdivision thereof, any entity exercising executive,
legislative, judicial, regulatory or administrative functions of or pertaining
to government, including, without limitation, any government authority, agency,
department, board, commission, court or instrumentality of the United states,
any state of the United States or any political subdivision thereof, and any
tribunal or arbitrator'(s) of competent jurisdiction.

     "Intellectual Property Rights" means and includes all worldwide
intellectual and other proprietary rights, including without limitation: (i)
copyrights, trademarks and service marks (and all applications and registrations
related thereto), (ii) all design rights, patents, patent applications, and
patent rights, (iii) all trade secret rights, know-how, contract rights,
proprietary information rights, rights of priority, rights of publicity, moral
rights, (iv) all rights to secure renewals, reissuances and extensions of the
above, (vi) all claims and/or causes of action of any kind for any past or
future infringements upon, or other misappropriations or violations of any of
the foregoing, and (vii) any other similar rights existing under judicial or
statutory law of any country in the world or under any treaty.

     "Purchased Assets" means those Comdisco assets identified on Exhibit A.
                                                                  ---------

     "Purchased Assets Value" means the corresponding agreed upon resale value
for the Purchased Assets, as specified on Exhibit A.
                                          ---------

2.   PURCHASE AND SALE OF ASSETS
     ---------------------------

     2.1  Agreement to Sell and Purchase Assets.  Subject to the terms and
          -------------------------------------
conditions of this Agreement, Comdisco agrees to sell, assign, transfer and
convey to DoveBid at the Closing (as defined in Section 3.3), and DoveBid agrees
to purchase and acquire from Comdisco at the Closing, all of Comdisco's right,
title and interest in and to all of the Purchased Assets.  The Purchased Assets
will be sold, assigned, transferred and conveyed to DoveBid (as provided in

*Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       2
<PAGE>

Section 2.2) on the Closing Date (as defined in Section 3.3), free and clear of
all Encumbrances, other than the purchase money security interest of Comdisco
with respect to the [*] equipment as described on Exhibit A hereto (hereinafter
                                                  ---------
"[*] Equipment") until payment in full of the Cash Consideration.

     2.2  Passage of Title; Delivery; Inspection.
          --------------------------------------

          (a)  Title Passage.  Except as otherwise provided in this Section 2,
               -------------
upon the Closing, all right, title and interest in and to all of the Purchased
Assets shall pass to DoveBid, and Comdisco shall deliver to DoveBid possession
of all of the Purchased Assets subject to the provisions of Section 2.2(c)
hereof.  Comdisco agrees to also deliver to DoveBid a Bill of Sale substantially
in the form attached as Exhibit B ("Bill of Sale") and such other instruments
                        ---------
and conveyances that DoveBid may reasonably deem necessary or desirable (both at
and after the Closing) sufficient to convey to DoveBid good and marketable title
to all of the Purchased Assets, free and clear of all Encumbrances other than
the purchase money security interest of Comdisco in the [*] Equipment until
payment in full of the Cash Consideration.  Comdisco acknowledges and agrees
that DoveBid will retain any and all proceeds from DoveBid's resale of any of
the Purchased Assets.

          (b)  Software Licenses.  To the extent that the Purchased Assets
               -----------------
include any software and Comdisco is the licensee and has the right to assign
such license rights, Comdisco hereby agrees, upon request of DoveBid, at
DoveBid's sole expense, to assign such license rights and agrees to undertake
whatever action that DoveBid may reasonably deem necessary or desirable,
including the execution of documents (both at and after the Closing) in
furtherance thereof.

          (c)  Delivery of Purchased Assets.  DoveBid has requested and Comdisco
               ----------------------------
has agreed to store the Purchased Assets, other than as set forth below, at
Comdisco's facilities in Massachusetts and California for a period not to exceed
thirty (30) days from the Closing Date (the "Purchased Assets Storage Period").
On or prior to the expiration of the Purchased Assets Storage Period, DoveBid
and Comdisco shall enter into an agreement with regard to services to be
provided by Comdisco in connection with the storage, packaging, refurbishing and
such other services as shall be agreed upon between the parties and the related
fees for such services.  In the event the parties do not enter into an agreement
within such period, DoveBid will pick up, at its expense, the Purchased Assets
from Comdisco's facilities within fifteen (15) business days thereof and for
each day thereafter, DoveBid shall pay Comdisco as liquidated damages, an amount
of $5000 per day.  DoveBid acknowledges that certain of the Purchased Assets, as
specified on Exhibit A as "[*]", are located [*] and DoveBid's possession
             ---------
thereof is subject to [*].  Comdisco shall have risk of loss for the Purchased
Assets remaining at Comdisco's facilities for the period specified above.  Risk
of loss for the Purchased Assets located [*] shall transfer to DoveBid on the
Closing Date.

          (d)  Inspection of Purchased Assets. Within fifteen (15) business days
               ------------------------------
following the Closing, DoveBid will conduct an inspection of the Purchased
Assets, other than the Purchased Assets located [*], to verify that such assets
correspond to the list thereof as set

*Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       3
<PAGE>

forth in Exhibit A and to document the condition of such assets. The result of
         ---------
DoveBid's inspection will be set forth in a written report (the "Purchased
Assets Inspection Report"), which DoveBid will promptly furnish to Comdisco. If
such an inspection reveals that any of the Purchased Assets are missing,
Comdisco will promptly pay DoveBid the Purchased Asset Values (as set forth in
Exhibit A) for such missing Purchased Assets or provide DoveBid a like-kind
---------
replacement with a comparable Purchased Assets Value. If Comdisco provides
DoveBid with a like-kind replacement of any of the Purchased Assets, DoveBid
will amend the Purchased Assets Inspection Report as appropriate. At the end of
the earlier of (i) the expiration of the Purchased Assets Storage Period (or any
mutually agreed-upon extension thereof); and (ii) the date on which DoveBid
removes the Purchased Assets from Comdisco's facilities, DoveBid will conduct a
second inspection of the Purchased Assets, other than the Purchased Assets
located [*], to verify that such assets correspond to the Purchased Assets
Inspection Report (as amended, if applicable). If the second inspection reveals
that any of the Purchased Assets are missing or are damaged, based on the
information contained in the Purchased Assets Inspection Report (as amended, if
applicable), Comdisco will promptly pay DoveBid the Purchased Asset Value (as
set forth in Exhibit A) for such missing Purchased Assets or provide DoveBid a
             ---------
like-kind replacement with a comparable Purchased Assets Value.

     2.3  Repurchase of Purchased Assets.  Subsequent to the Closing, Comdisco
          ------------------------------
will have the right to request DoveBid to sell to Comdisco any of the Purchased
Assets. Upon such request, DoveBid will sell such Purchased Assets to Comdisco
at prices equal to the applicable Purchased Assets Value, and subject DoveBid's
standard auction terms.

3.   PURCHASE PRICE; PAYMENTS
     ------------------------

     3.1  Purchase Price. In consideration of the sale, assignment, transfer and
          --------------
conveyance of all the Purchased Assets to DoveBid at the Closing free and clear
of all Encumbrances, other than a purchase money security interest in favor of
Comdisco, DoveBid shall (i) pay to Comdisco on or after the Closing, but in no
event later than March 31, 2000, by wire transfer the Cash Consideration, and
(ii) issue to Comdisco [*] shares of DoveBid's Series C Preferred Stock in the
form of a stock certificate, in accordance with the terms and conditions
specified in the Stock Purchase Agreement.

     3.2  Expenses and Taxes. Each party will bear its own attorneys,
          ------------------
accountants, financial advisors and other fees and costs related to this
transaction, including preparation of this Agreement. DoveBid will either pay
all sales, transfer, bulk sales and use tax associated with the transaction
hereby contemplated and the transfer of the Purchased Assets or will provide
resale certificates to Comdisco in connection therewith and will indemnify
Comdisco and its shareholders, officers, directors, employees and agents, from
all loss, liability, damage, claim, risk and expense (including reasonable
attorneys' fees) occasioned by DoveBid's failure to pay such taxes in the
absence of an exemption therefrom.

     3.3  Closing.  The consummation of the transaction contemplated hereby
          -------
will take place at a closing to be held at the offices of Fenwick & West LLP
located at Palo Alto Square, Palo Alto, California (the "Closing") at 10:00 am
on March 7, 2000, or at such other time or

*Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       4
<PAGE>

date, and at such place, or by such other means of exchanging documents, as may
be agreed to by the parties hereto. The date on which the Closing activity
occurs will be referred to as the "Closing Date".

4.  CO-MARKETING RELATIONSHIP.
    -------------------------

    4.1   Right of First Refusal.  Comdisco hereby grants to DoveBid the right
          ----------------------
of first refusal (the "Right of First Refusal") to act as the exclusive provider
of third-party auction services for the sale of all Comdisco [*] manufacturing
equipment and [*] and [*] and [*] equipment (collectively, "Designated Comdisco
Equipment"), subject to the following terms:

          (a)  The Right of First Refusal will apply to the sale of all
Designated Comdisco Equipment that Comdisco elects to dispose of by auction
through a third party ("Designated Assets"). The Right of First Refusal will not
apply to any sale of assets by Comdisco or a Comdisco Affiliate through its own
channels, which shall include, but not be limited to, direct sales, Web sales,
auctions, or any other form of remarketing by Comdisco or a Comdisco Affiliate.
Comdisco may, but is not obligated to, offer DoveBid assets for auction other
than the Designated Comdisco Equipment. Any such assets offered to DoveBid shall
be considered Designated Assets for the purposes of Sections 4.1(c) and (d).

          (b)  During the Co-Marketing Term (as defined in Section 4.6),
Comdisco's [*] division will list a minimum of [*] of [*] assets on DoveBid's
24x7 Web site.  All such assets shall be considered Designated Assets for the
purposes of Sections 4.1(c) and (d).  DoveBid will charge Comdisco its standard
five percent (5%) commission rate for the sale of such assets on DoveBid's 24x7
Web site, for a total anticipated commission with respect to such assets of [*]
(the "Minimum Commissions").  If, as of the end of the Co-Marketing Term,
DoveBid has received less than the Minimum Commissions, then Comdisco will
promptly pay DoveBid an amount equal to the Minimum Commissions less any
commissions actually received by DoveBid for the sale of such assets.

          (c)  Prior to putting any Designated Assets up for auction, Comdisco
will provide DoveBid with a list of such assets containing Comdisco's reserve
price for each asset (a "Designated Assets List").  DoveBid will have a period
of [*] days from the date of receipt of Comdisco's Designated Asset List to
accept or reject the Designated Assets for auction on such reserve price terms.
In the event DoveBid elects to reject the Designated Assets for auction,
Comdisco may enter into agreements with any third party for the disposal of such
assets so long as the reserve prices for the assets are not less than those
identified in Comdisco's Designated Asset List.  If DoveBid accepts the
Designated Assets for auction, DoveBid will have the exclusive right to sell
such assets for a reasonable period of time, of not less than [*] days, as shall
be agreed upon by the parties (each, an "Auction Duration"), and upon auction
terms and conditions substantially in the form attached hereto as Exhibit C (the
                                                                  ---------
"Auction Terms"), as negotiated at the time such assets are presented by DoveBid
for auction, including the fee-sharing arrangement between DoveBid and Comdisco
in connection therewith.  Comdisco and DoveBid will enter into a Schedule
substantially in the form attached hereto as Exhibit D for any auctions of
                                             ---------
Designated Assets accepted by DoveBid under this Section 4.1.  Comdisco will
retain

*Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       5
<PAGE>

title to Designated Assets that DoveBid accepts for auction, but DoveBid may
warehouse such assets, as mutually agreed by the parties.

          (d)  In the event that DoveBid does not sell such Designated Assets in
accordance with the applicable Auction Terms, Comdisco will have the right to
rescind DoveBid's right to sell such assets, DoveBid will remove such assets
from DoveBid's auction and, to the extent applicable, return such assets to
Comdisco, within five (5) business days of receipt of written notice thereof
from Comdisco, and Comdisco shall have the right to sell such Designated Assets
through its own channels or via any third party.  In addition, Comdisco shall
have the right to review DoveBid's performance hereunder at the expiration of
the fifth (5/th/) month after the Closing Date.  If, as a result of such a
review, Comdisco determines that DoveBid has failed to auction, within the
applicable Auction Durations, a percentage of Designated Assets equal to or in
excess of [*] of the aggregate Designated Assets allocated to DoveBid for
auction during such Auction Durations, as measured by dollar amount of assets
based upon reserve prices, DoveBid's Right of First Refusal shall be terminated
upon receipt of written notice thereof from Comdisco.

          4.2  Exclusivity.  As long as the Right of First Refusal (as defined
               -----------
in Section 4.1) remains in effect, DoveBid agrees not to enter into a co-
marketing relationship with a company that provides services similar to Comdisco
for the auction of [*] or [*] equipment, subject to the following terms:

          (a)  DoveBid will not [*] auction services for the sale of types of
equipment substantially similar to the Designated Comdisco Equipment of any
other company that provides equipment financing and asset management services
for third parties in the [*] or [*] sectors [*].

          (b)  Nothing will restrict DoveBid from auctioning equipment used by a
[*] for its own internal needs [*].

          (c)  Nothing will restrict DoveBid from auctioning equipment used by
any company for its internal needs regardless of the source of lease or capital
financing used by the company [*].

          (d)  Nothing will restrict third parties (including, without
limitation, [*]) from [*] assets for auction on DoveBid's Web site.

          (e)  Prior to selling aggregated assets in the [*] or [*] sectors for
auction on DoveBid's Web site, DoveBid will seek to identify with Comdisco
opportunities to refurbish certain "big ticket" assets for resale through
Comdisco's channels.  The terms of any such transaction would be mutually agreed
by DoveBid and Comdisco.

          (f)  DoveBid will allow Comdisco [*] to the [*] in [*] for the
Designated Comdisco Equipment sectors ("[*]") solely for Comdisco's internal use
only.  Comdisco will not have the right to [*] any of [*] or permit its use by
any third party.

*Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       6
<PAGE>

     4.3  Marketing Branding.  The parties will enter into joint marketing
          ------------------
programs to promote the parties' co-marketing relationship subject to the
following terms:

          (a)  Any use by DoveBid of the Comdisco name or any Comdisco trademark
shall be subject to Comdisco's prior (i) review of the proposed marketing
materials, press releases, announcements or similar documentation and (ii)
written consent.  Any such use by DoveBid of Comdisco's name or any Comdisco
trademark must be in compliance with Comdisco's standard trademark usage
guidelines.

          (b)  Any use by Comdisco of the DoveBid name or any DoveBid trademark
shall be subject to DoveBid's prior (i) review of proposed marketing materials,
press releases, announcements or similar documentation and (ii) written consent.
Any such use by Comdisco of DoveBid's name or any DoveBid trademark must be in
compliance with DoveBid's standard trademark usage guidelines.

     4.4  Further Collaboration.  DoveBid and Comdisco may extend the terms of
          ---------------------
the [*] and [*] as provided [*], respectively, by mutual written agreement. In
addition, the parties will work together to identify other areas in which they
can collaborate, including the auction of assets other than the Designated
Comdisco Equipment, such as [*], [*] and [*].

     4.5  Non-Solicitation.  DoveBid and Comdisco will not solicit for hire any
          ----------------
employee of the other during the term of this Agreement or for one (1) year
thereafter.

     4.6  Term of Co-Marketing Relationship.  Unless terminated earlier in
          ---------------------------------
accordance with the terms hereof, the parties' co-marketing relationship, as set
forth in Sections 4.1 through 4.5, will be in force for a term of one (1) year
from the Closing Date, unless otherwise mutually agreed between the parties (the
"Co-Marketing Term").  Either party may terminate the Co-Marketing Term upon
notice to the other party if the other party commits a material breach of any
representation, warranty, term or condition thereof and fails to cure such
breach within thirty (30) days following receipt of written notice thereof.

5.   OBLIGATIONS AND LIABILITIES NOT ASSUMED
     ---------------------------------------

     5.1  Liabilities and Obligations Not Assumed.  Except for the obligations
          ---------------------------------------
arising following the Closing under any software licenses assigned by Comdisco
to DoveBid pursuant to Section 2.2 (b) hereof and any obligations arising in
connection with Comdisco's assignment to DoveBid of Comdisco's rights and
interests under [*], DoveBid has not and will not, by the execution, delivery or
performance of this Agreement, or otherwise, assume or otherwise become
responsible for any liability or obligation of any nature of Comdisco, including
without limitation any tax liabilities related to the Purchased Assets arising
prior to the Closing ("Pre-Closing Risks"). Comdisco hereby agrees to indemnify,
defend and hold DoveBid and its shareholders, officers, directors, employees and
agents, harmless from and against all loss, liability, claims and expenses
(including reasonable attorneys' fees) related to such Pre-Closing Risks.

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities Exchange Commission.

                                       7
<PAGE>

     5.2  No Obligations to Third Parties.  The execution and delivery of this
          -------------------------------
Agreement shall not be deemed to confer any rights upon any person or entity
other than the parties hereto, or to make any person or entity a third-party
beneficiary of this Agreement, or to obligate the parties to any person or
entity other than the parties to this Agreement.

6.   REPRESENTATIONS AND WARRANTIES OF DOVEBID
     -----------------------------------------

     DoveBid represents and warrants to Comdisco that all of the following
statements are true, accurate and correct:

     6.1  Corporate Organization.  DoveBid is a corporation duly organized,
          ----------------------
validly existing and in good standing under the laws of the State of Delaware.
DoveBid has all necessary corporate power and authority to enter into this
Agreement and all other documents that DoveBid may be required to enter into in
connection with this Agreement.

     6.2  Authorization for this Agreement.  The execution and delivery of this
          --------------------------------
Agreement and each other agreement or instrument referenced herein by DoveBid,
and the performance by DoveBid of its obligations hereunder and thereunder have
been duly authorized by the Board of Directors of DoveBid, and, if required by
law or agreement, its shareholders, and no further corporate or other action or
approval is required in order to constitute such agreements as binding and
enforceable.

     6.3  No Conflicts. The execution, delivery and performance by DoveBid of
          ------------
this Agreement and each other agreement or instrument referenced herein by
DoveBid, and the consummation of the transactions contemplated thereby, do not
and will not conflict with or result in a violation of or a default under (with
or without the giving of notice or the lapse of time or both) (a) DoveBid's
articles of incorporation or by-laws or other organizational documents, (b) any
Applicable Law applicable to DoveBid, or (c) any contract, agreement or other
instrument to which DoveBid is a party or by which DoveBid may be bound or
affected. No consent, approval, order or authorization of, or registration,
qualification, designation, declaration or filing with, any Governmental
Authority on the part of DoveBid is required in connection with the execution,
delivery and performance of the Agreement by DoveBid or the consummation of the
transactions contemplated thereby, except those as shall have been obtained or
made prior to Closing.

     6.4  Brokerage and Finder's Fees.  Neither DoveBid nor any of its
          ---------------------------
affiliates has employed any broker, finder or agent, or agreed to pay or incur
any brokerage fee, finder's fee or commission with respect to the transactions
contemplated by this Agreement, or dealt with anyone purporting to act in the
capacity of a broker, finder or agent with respect thereto as a result of which
any claim for a fee can be asserted against Comdisco.

     6.5  Full Disclosure.  No representation or warranty by DoveBid in this
          ---------------
Agreement, contains any untrue statement of a material fact or omits to state a
material fact or circumstance required to be stated therein or necessary in
order to make such statements, in light of the circumstances under which they
were made, not misleading. The copies of all documents

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities Exchange Commission.

                                       8
<PAGE>

furnished by DoveBid to Comdisco, its affiliates and agents pursuant to or in
connection with this Agreement and the transactions contemplated hereby are
complete and accurate.

7.   REPRESENTATIONS AND WARRANTIES OF COMDISCO
     ------------------------------------------

     Comdisco represents and warrants to DoveBid that all of the following
statements are true, accurate and correct:

     7.1  Corporate Organization.  Comdisco is a corporation duly organized,
          ----------------------
validly existing and in good standing under the laws of the State of Delaware,
and has all necessary corporate power and authority and the legal right to own
the Purchased Assets. Comdisco has all necessary corporate power and authority
to enter into this Agreement and all of the other agreements and instruments
required to be executed or delivered by Comdisco hereunder collectively
"Collateral Agreements").

     7.2  Authorization for this Agreement.  The execution and delivery of this
          --------------------------------
Agreement and each of the Collateral Agreements herein by Comdisco and the
performance by Comdisco of its obligations hereunder and thereunder have been
duly authorized by the Board of Directors of Comdisco and, if required by law or
agreement, its shareholders, and no further corporate or other action or
approval is required in order to constitute such agreements as binding and
enforceable.

     7.3  No Conflicts.  The execution, delivery and performance by Comdisco of
          ------------
this Agreement and each of the Collateral Agreements to which it is a party, and
the consummation of the transactions contemplated thereby, do not and will not
conflict with or result in a violation of or a default under (with or without
the giving of notice or the lapse of time or both) (a) Comdisco's articles of
incorporation or by-laws or other organizational documents, (b) any Applicable
Law applicable to Comdisco, or any of the Purchased Assets, or (c) any contract,
agreement or other instrument to which Comdisco is a party or by which Comdisco
or any of the Purchased Assets, may be bound or affected, except as provided in
[*]. No consent, approval, order or authorization of, or registration,
qualification, designation, declaration or filing with, any Governmental
Authority on the part of Comdisco is required in connection with the execution,
delivery and performance of the Agreement and the Collateral Agreements by
Comdisco or the consummation of the transactions contemplated thereby, except
those as shall have been obtained or made prior to Closing.

     7.4  Brokerage and Finder's Fees.  Neither Comdisco nor any Comdisco
          ---------------------------
Affiliate has employed any broker, finder or agent, or agreed to pay or incur
any brokerage fee, finder's fee or commission with respect to the transactions
contemplated by this Agreement, or dealt with anyone purporting to act in the
capacity of a broker, finder or agent with respect thereto as a result of which
any claim for a fee can be asserted against DoveBid.

     7.5  Title.  Comdisco owns and has good and marketable title to all of the
          -----
Purchased Assets, free and clear of all Encumbrances. Title to all the Purchased
Assets is freely

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities Exchange Commission.

                                       9
<PAGE>

transferable from Comdisco to DoveBid without obtaining the consent or approval
of or delivering notice to any person or party.

     7.6  Condition of Purchased Assets.  The Purchased Assets are being sold
          -----------------------------
"as is". COMDISCO MAKES NO OTHER WARRANTEIS OTHER THAN THOSE SPECIFICALLY SET
OUT IN THIS AGREEMENT (IF ANY), AND SPECIFICALLY DISCLAIMS THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

     7.7  Litigation.  There are no actions, suits, investigations or
          ----------
proceedings pending, or, to the knowledge of Comdisco, threatened (i) against
Comdisco, the Purchased Assets or any properties or rights of Comdisco which
arose out of or are based upon the ownership or use of the Purchased Assets
before any Governmental Authority, (ii) challenging the ownership or use, in any
respect, of the Purchased Assets, or (iii) asserting the invalidity of this
Agreement or seeking to prevent any of the transactions contemplated hereby.

     7.8  Compliance with Laws.  In the operation of its business as it
          --------------------
relates to the Purchased Assets, Comdisco has duly complied with all Applicable
Laws, including without limitation, all laws, regulations and rules relating to
environmental, export controls, immigration, labor and employment benefits
matters.

     7.9  Taxes.  At the Closing there will be no federal, state or local tax
          -----
liens (whether recorded, unrecorded or arising by operation of law) against any
of the Purchased Assets to be transferred to DoveBid hereunder. Comdisco has
paid or will pay, when due, any federal, state or local taxes attributable to
periods prior to the Closing Date with respect to the Purchased Assets which, if
unpaid, may result in a lien against any of the Purchased Assets.

     7.10 Records.  On or before the Effective Date and the Closing, Comdisco
          -------
has made available to DoveBid access to all documents, books, files and records
of Comdisco pertaining to the Purchased Assets.

     7.11 Undisclosed Liabilities.  To Comdisco's knowledge, Comdisco has no
          -----------------------
obligations or liabilities related to the Purchased Assets, including but not
limited to, employees or consultants, whether absolute, accrued, contingent or
otherwise, except and to the extent disclosed in this Agreement.

     7.12 Intellectual Property.  As between the parties, Comdisco owns,
          ---------------------
possesses and has the exclusive rights to own the Purchased Assets, and Comdisco
has not granted any third party any outstanding licenses or other rights in or
to any of its Purchased Assets.  Comdisco is not liable, nor has it made any
contract, commitment or arrangement whereby it may become liable, to any person
for any royalty, fee or other compensation for any of the Purchased Assets. To
Comdisco's knowledge, no third party has asserted or threatened to assert
against Comdisco that any of the Purchased Assets infringe upon, misappropriate
or otherwise conflict with, any Intellectual Property Rights of any third party.

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities Exchange Commission.

                                       10
<PAGE>

     7.13 Decontamination Processes.  Comdisco has complied with its normal
          -------------------------
and customary decontamination processes with respect to the Purchased Assets,
other than the "[*]" located on [*].

     7.14 Full Disclosure.  No representation or warranty by Comdisco in this
          ---------------
Agreement or in any Collateral Agreement when taken together, contains any
untrue statement of a material fact or omits to state a material fact or
circumstance required to be stated therein or necessary in order to make such
statements, in light of the circumstances under which they were made, not
misleading. The copies of all documents furnished by Comdisco to DoveBid, its
affiliates and agents pursuant to or in connection with this Agreement and the
transactions contemplated hereby are complete and accurate.

8.   COVENANTS OF COMDISCO
     ---------------------

     8.1  Pre-Closing Covenants.  Until the Closing:  (a) Comdisco shall conduct
          ---------------------
its business with respect to the Purchased Assets only in the ordinary course,
(b) Comdisco shall reasonably cooperate with DoveBid in the orderly transfer of
the Purchased Assets to DoveBid's control by the Closing, (c) Comdisco shall use
commercially diligent efforts to preserve for DoveBid the Purchased Assets, and
shall completely refrain from negotiating any license, right or other form of
Encumbrance upon any portion of the Purchased Assets with any third party;
provided, that the foregoing shall not be deemed to prohibit Comdisco, prior to
the Closing, from selling any of the Purchased Assets to a third party in the
ordinary course.

     8.2  Access.  Comdisco will provide DoveBid and its representatives, during
          ------
normal business hours, with complete access to all of the Purchased Assets,
other than those assets located at [*], access to which shall be subject to
compliance with the terms and conditions of [*], and any related documents,
books, files and records, to afford DoveBid a reasonable opportunity to make
such a full investigation of the Purchased Assets prior to the Closing as
DoveBid may reasonably desire, and Comdisco will cause Comdisco's
representatives to cooperate fully with DoveBid and DoveBid's representatives in
connection therewith.

     8.3  Required Consents and Notices.
          -----------------------------

     On or prior to the Closing, Comdisco will obtain all consents, waivers and
authorizations required or appropriate to validly and timely assign and transfer
all of the Purchased Assets to DoveBid at the Closing free and clear of all
Encumbrances, other than the purchase money security interest of Comdisco with
respect to the [*] Equipment, and to permit DoveBid following the Closing to
resell the Purchased Assets to third parties, subject to payment in full to
Comdisco by DoveBid of the Cash Consideration.

     8.4  Bill of Sale.  At the Closing, Comdisco will execute and deliver to
          ------------
DoveBid the Bill of Sale.

     8.5  Further Assurances.  From and after the Closing Date, Comdisco will
          ------------------
promptly execute and deliver to DoveBid any and all such further assignments,
endorsements, records,

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities Exchange Commission.

                                       11
<PAGE>

information and other documents and instruments as DoveBid may reasonably
request for the purpose of effecting the transfer of Comdisco's title to the
Purchased Assets to DoveBid and/or carrying out the provisions of this
Agreement.

     8.6  Notice of Certain Matters.  Comdisco shall give prompt notice to
          -------------------------
DoveBid of the occurrence, or failure to occur, of any event, which occurrence
or failure to occur, if uncured, could cause (a) any inaccuracy or breach of any
representation or warranty or violation of a covenant of Comdisco in this
Agreement; or (b) the failure of any of the conditions set forth in Section 10
of this Agreement.

9.   COVENANTS OF DOVEBID
     --------------------

     9.1  Compliance.  DoveBid agrees that before and after the Closing Date,
          ----------
Comdisco shall have no responsibility for DoveBid's compliance or non-compliance
with any [*] order with respect to [*] or with any [*] statute or regulations
governing the conduct of [*] or auctions and DoveBid shall hold Comdisco
harmless from any such compliance or non-compliance by DoveBid.

     9.2  Taxes.  DoveBid agrees to promptly pay all sales, use, transfer, bulk
          -----
sales or other taxes imposed on the sale or transfer of the Purchased Assets to
DoveBid under this Agreement or in connection with any subsequent sales thereof
by DoveBid and to indemnify and hold Comdisco and its officers, directors,
shareholders, employees and agents, harmless from and against any such taxes or
claims for payment thereof by any tax authority.

     9.3  Required Consents and Notices.  Prior to the Closing, DoveBid will
          -----------------------------
obtain all consents, waivers and authorizations and provide all notices required
or appropriate to consummate the transactions contemplated by this Agreement.

     9.4  Notice of Certain Matters.  DoveBid shall give prompt notice to
          -------------------------
Comdisco of the occurrence, or failure to occur, of any event, which occurrence
of failure to occur, if uncured, could cause (a) any inaccuracy or breach of any
representation or warranty or violation of a convenant of DoveBid in this
Agreement, or (b) the failure of any of the conditions set forth in Section 10
of this Agreement.

     9.5  Further Assurances.  From and after the Closing Date, DoveBid will
          ------------------
promptly execute and deliver to Comdisco any and all such further records,
documents, information, and instruments as Comdisco may reasonably request for
the purpose of carrying out the provisions of this Agreement.

10.  CONDITIONS TO CLOSING
     ---------------------

     10.1 Conditions to DoveBid's Obligations.  The obligations of DoveBid
          -----------------------------------
hereunder shall be subject to the satisfaction and fulfillment of each of the
following conditions, except as DoveBid may expressly waive the same in writing:

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities Exchange Commission.

                                       12
<PAGE>

          (a)  Accuracy of Representations and Warranties.  The representations
               ------------------------------------------
and warranties made herein by Comdisco in Section 7 shall be true and correct in
all material respects, and shall not be misleading in any material respect, on
and as of the date given, and on and as of the Closing Date with the same force
and effect as though such representations and warranties were made on and as of
the Closing Date.

          (b)  Compliance.  As of the Closing Date, Comdisco shall have complied
               ----------
in all material respects with, and shall have fully performed, in all material
respects, all conditions, covenants and obligations in this Agreement imposed on
Comdisco, required to be performed or complied with by Comdisco at, or prior to,
the Closing Date.

          (c)  Delivery of Amended List of Purchased Assets. Comdisco shall have
               --------------------------------------------
delivered, and DoveBid shall have received an amended Exhibit A from which
                                                      ---------
assets sold by Comdisco prior to Closing, and their corresponding agreed upon
value, shall have been removed.

          (d)  Delivery of Purchased Assets.  Comdisco shall have delivered,
               ----------------------------
subject to the terms of Section 2.2 (c) hereof, and DoveBid shall have received
all the Purchased Assets free and clear of all Encumbrances, other than the
purchase money security interest in favor of Comdisco with respect to the [*]
Equipment.

          (e)  Bill of Sale.  Comdisco shall have duly executed and delivered to
               ------------
DoveBid the Bill of Sale.

          (f)  No Litigation; Legality. There shall not be pending or threatened
               -----------------------
any litigation with respect to the Purchased Assets or the transfer thereof by
Comdisco.  There shall not be in effect or pending any Applicable Law which
makes it illegal for Comdisco to consummate the transactions contemplated by
this Agreement, or any order, decree or judgment enjoining any party to this
Agreement from consummating the transactions contemplated by this Agreement or
requiring any part of the Purchased Assets to be divested or subject to an
Encumbrance.

     10.2 Conditions to Comdisco's Obligations.  The obligations of Comdisco
          ------------------------------------
hereunder shall be subject to the satisfaction and fulfillment of each of the
following conditions, except as Comdisco may expressly waive the same in
writing:

          (a)  Accuracy of Representations and Warranties on Closing Date.  The
               ----------------------------------------------------------
representations and warranties made herein by DoveBid in Section 6 hereof shall
be true and correct in all material respects, and shall not be misleading in any
material respect, on and as of the date given, and on and as of the Closing Date
with the same force and effect as though such representations and warranties
were made on and as of the Closing Date.

          (b)  Compliance.  DoveBid shall have complied in all material respects
               ----------
with, and shall have fully performed, in all material respects, all terms,
conditions, covenants and obligations in this Agreement imposed on DoveBid and
required to be performed or complied with by DoveBid at, or prior to, the
Closing Date.

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities Exchange Commission.

                                       13
<PAGE>

          (c)  Stock. Comdisco shall have received a stock certificate
               -----
evidencing the DoveBid Series C Preferred Stock issued to Comdisco under the
Stock Purchase Agreement.

          (d)  Cash Consideration. DoveBid shall pay to Comdisco on or after the
               ------------------
Closing Date, but in no event later than March 31, 2000, the Cash Consideration.

          (e)  No Litigation; Legality.  There shall not be in effect or pending
               -----------------------
any Applicable Law which makes it illegal for DoveBid to consummate the
transactions contemplated by this Agreement, or any order, decree or judgment
enjoining any party to this Agreement from consummating the transactions
contemplated by this Agreement.

          (f)  [*].  DoveBid shall execute and deliver the Assignment of
Comdisco's rights and interests under the [*] in the form attached hereto as
Exhibit F.
---------

11.  CONFIDENTIALITY.
     ---------------

     11.1 Confidentiality Obligation.  Comdisco hereby expressly acknowledges
          --------------------------
and agrees that [*] (as defined in [*] constitutes "Confidential Information" as
defined in the Confidentiality Agreement entered into between the parties dated
October 5, 1999, a copy of which is attached hereto and made a part hereof as
Exhibit G (the "Confidentiality Agreement").
----------

     11.2 Permitted Disclosure.  The terms and conditions of this Agreement will
          --------------------
be considered confidential and will not be disclosed to any third parties except
to such party's accountants, attorneys or except as otherwise required by law.
Notwithstanding the foregoing, Comdisco will have the right to disclose this
Agreement to the extent necessary in connection with [*]. Neither party will
make any public announcement regarding the existence of this Agreement without
the other party's prior written approval and consent. If this Agreement or any
of its terms must be disclosed under any law, rule or regulation (e.g., as part
of a filing with the United States Securities and Exchange Commission),
excluding an order or other discovery request issued by a court of competent
jurisdiction, the disclosing party will (a) use reasonable efforts to give
written notice of the intended disclosure to the other party at least five (5)
days in advance of the date of disclosure; (b) redact portions of this Agreement
to the fullest extent permitted under any applicable laws, rules and
regulations; and (c) submit a request, to be agreed upon by the other party,
that such portions and other provisions of this Agreement requested by the other
party receive confidential treatment under the laws, rules and regulations of
the body or tribunal to which disclosure is being made or otherwise be held in
the strictest confidence to the fullest extent permitted under the laws, rules
or regulations of any other applicable governing body.

12.  SURVIVAL OF WARRANTIES; INDEMNIFICATION; LIMITATION OF LIABILITY
     ----------------------------------------------------------------

     12.1 Survival of Warranties.  All representations and warranties made
          ----------------------
by Comdisco or DoveBid herein, or in any certificate, schedule or exhibit
delivered pursuant hereto, shall survive the Closing.

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities Exchange Commission.

                                       14
<PAGE>

     12.2  Indemnified Losses.  For the purpose of this Section 12, "Loss" shall
           ------------------
mean and include any and all liability, loss, damage, claim, expense, cost,
fine, fee, penalty, obligation or injury including, without limitation, those
resulting from any and all actions, suits, proceedings, demands, assessments,
judgments, award or arbitration, together with reasonable costs and expenses
including the reasonable attorneys' and expert's fees and other legal costs and
expenses relating thereto plus interest on the foregoing at the rate of 10% per
annum.

     12.3  Indemnification by Comdisco.  Subject to the provisions and
           ---------------------------
limitations set forth in this Section 12, Comdisco agrees to defend, indemnify
and hold harmless DoveBid, any parent, subsidiary or affiliate of DoveBid and
any director, officer, employee, stockholder, agent or attorney of DoveBid or of
any parent, subsidiary or affiliate of DoveBid (collectively, the "DoveBid
Indemnified Parties") from and against any Loss which arises out of any breach
or violation of any covenant of Comdisco, or the material inaccuracy or untruth
of any representation or warranty of Comdisco made herein.

     12.4  Indemnification by DoveBid. Subject to the provisions and limitations
           --------------------------
set forth in this Section 12, DoveBid agrees to defend, indemnify and hold
harmless Comdisco, any parent, subsidiary or affiliate of Comdisco and any
director, officer, employee, stockholder, agent or attorney of Comdisco or of
any parent, subsidiary or affiliate of Comdisco (collectively, the "Comdisco
Indemnified Parties") from and against any Loss which arises out of (i) any
breach or violation of any covenant of DoveBid, or the material inaccuracy or
untruth or any representation or warranty by DoveBid made herein, or (ii) any
third party claims for death, bodily injury or tangible property damage incurred
while on Comdisco's premises on or after the Closing Date in connection with the
Purchased Assets (a "Comdisco Premises Claim").

     12.5  Procedures for Indemnification.  If any action, suit or proceeding
           ------------------------------
shall be commenced against, or any claim or demand be asserted against DoveBid
or Comdisco or any other party indemnified under Section 12.3 or 12.4 in respect
of which DoveBid or Comdisco is entitled to demand indemnification under this
Section 12, then, the indemnified party shall notify the indemnitor in writing
generally describing such action, suit, proceeding, claim or demand with
reasonable particularity. The indemnified party will not compromise or settle
any such action, suit, proceeding, claim or demand without the prior written
consent of the indemnitor. So long as the indemnitor is diligently defending, at
its sole expense and in good faith, any such action, suit, proceeding, claim or
demand asserted by a third party against the indemnified party, the indemnified
party shall not settle or compromise such action, suit, proceeding, claim or
demand without the prior written consent of the indemnitor, which consent will
not be unreasonably withheld or delayed. If the indemnitor fails to promptly and
adequately defend any such action, suit, proceeding, claim or demand, then the
indemnified party may defend, through counsel of its own choosing, such action,
suit, proceeding, claim or demand and (so long the indemnified party gives the
indemnitor at least ten (10) days' notice of the terms of the proposed
settlement thereof and permits the indemnitor to then undertake the defense
thereof at its sole expense if the indemnitor reasonably objects to the proposed
settlement) to settle such action, suit, proceeding, claim or demand and to
recover from the indemnitor the amount of such Losses.

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       15
<PAGE>

     12.6  Limitation of Liability.  IN NO EVENT SHALL EITHER PARTY TO THIS
           -----------------------
AGREEMENT BE RESPONSIBLE FOR SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES. Each
parties' liability hereunder shall be further limited to the Purchase Price for
the Purchased Asset giving rise to claim hereunder. The foregoing limitation
will not restrict Comdisco's liability for: (i) any breach by Comdisco of the
Confidentiality Agreement with respect to [*]; or (ii) any Loss for which
Comdisco is required to indemnify any DoveBid Indemnified Party arising out of
any breach by Comdisco of its representation and warranty as set forth in
Section 7.13.  The foregoing limitation will not restrict DoveBid's liability
for any Loss for which DoveBid is required to indemnify any Comdisco Indemnified
Party arising out of: (i) any breach by DoveBid of its covenants under Sections
9.1 or 9.2; or (ii) any Comdisco Premises Claim.

13.  MISCELLANEOUS
     -------------

     13.1  Expenses.  Each of the parties hereto shall bear its own expenses
           --------
(including without limitation attorneys' fees) in connection with the
negotiation and consummation of the transaction contemplated hereby.

     13.2  Notices.  Any notice required or permitted to be given under this
           -------
Agreement shall be in writing and shall be personally delivered or sent by
certified or registered United States mail, postage prepaid, or sent by
nationally recognized overnight express courier and shall be deemed given or
delivered upon the earlier or (i) the first business day after hand delivery or
deposit with overnight express courier, or (ii) three (3) calendar days after
mailed, and shall be addressed as follows:

     (a)   If to Comdisco:

                    Comdisco, Inc.
                    6111 North River Road
                    Rosemont, IL 60018
                    Attn.: Frank Cirone
                    Phone: (847)518-7773
                    Fax:   (847)518-

                    Attn:  General Counsel
                    Phone: (847) 518-5075
                    Fax:   (847) 518-5088

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       16
<PAGE>

     (b)   If to DoveBid:

                    DoveBid, Inc.
                    1241 East Hillsdale Blvd.
                    Foster City, CA 94404
                    Attn: Cory Ravid, Chief Financial Officer

                    Attn: Anthony Capobianco, General Counsel
                    Phone: (650) 571-7400
                    Fax:   (650) 571-1502

     13.3  Entire Agreement.  This Agreement, the Exhibits hereto (which are
           ----------------
incorporated herein by reference) and the agreements to be executed and
delivered in connection herewith, together constitute the entire agreement and
understanding between the parties and there are no agreements or commitments
with respect to the transactions contemplated herein except as set forth in this
Agreement. The captions in this Agreement are for convenience only and shall not
be considered a part of or affect the construction or interpretation of any
provision of this Agreement.

     13.4  Amendment; Waiver. Any term or provision of this Agreement may be
           -----------------
amended only by a writing signed by Comdisco and DoveBid. The observance of any
term or provision of this Agreement may be waived (either generally or in a
particular instance and either retroactively or prospectively) only by a writing
signed by the party to be bound by such waiver. No waiver by a party of any
breach of this Agreement will be deemed to constitute a waiver of any other
breach or any succeeding breach.

     13.5  Execution in Counterparts. For the convenience of the parties, this
           -------------------------
Agreement may be executed in one or more counterparts, each of which shall be
deemed an original but all of which together shall constitute one and the same
instrument.

     13.6  Assignment.  This Agreement may not be assigned by any party hereto
           ----------
without the prior written consent of each other party; except that either party
may assign this Agreement (and all related agreements) by operation of law or in
connection with any merger, consolidation or sale of all or substantially all
such party's assets or in connection with any similar transaction or to any
subsidiary, affiliate or parent of such party. This Agreement shall be binding
upon, shall inure to the benefit of, and be enforceable by and against, the
parties hereto and their respective successors and permitted assigns.

     13.7  Governing Law.  This Agreement shall be governed by and construed in
           -------------
accordance with the internal laws of the State of California (excluding
application of any conflicts of law doctrines that would make applicable the law
of any other state or jurisdiction) and, where appropriate, applicable federal
law.

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       17
<PAGE>

     13.8  Severability.  If any provision of this Agreement is for any reason
           ------------
and to any extent deemed to be invalid or unenforceable, then such provision
shall not be voided but rather shall be enforced to the maximum extent then
permissible under then applicable law and so as to reasonably effect the intent
of the parties hereto, and the remainder of this Agreement will remain in full
force and effect.

                           [Signature page follows]

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       18
<PAGE>

    IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Agreement by their duly authorized representatives as of the Effective Date.

COMDISCO, INC.                            DOVEBID, INC.

/s/ Frances Cirone                        /s/ Jeffrey M. Crowe
------------------------------------      --------------------------------------
By:                                       By:

President
------------------------------------      --------------------------------------
Name:                                     Name:

Exhibits
--------

Exhibit A - Purchased Assets
Exhibit B - Bill of Sale
Exhibit C - Auction Terms
Exhibit D - Auction Schedule
Exhibit E - [*]
Exhibit F - Assignment Agreement
Exhibit G - Confidentiality Agreement

                                   Exhibit A

                               Purchased Assets

                                      [*]

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       19
<PAGE>

                                   EXHIBIT A
                                   ---------

                               PURCHASED ASSETS

     [*]

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.
<PAGE>

                                   EXHIBIT B
                                   ---------

                                 BILL OF SALE

This Bill of Sale dated as of March 7, 2000 (this "Bill of Sale") is made
between DoveBid, Inc., a California corporation (hereinafter "Purchaser"), and
Comdisco, Inc., a Delaware corporation (hereinafter, "Seller"). Purchaser and
Seller are parties to a certain Asset Purchase and Co-Marketing Agreement dated
as of March 7, 2000 (the "Purchase Agreement"). Capitalized terms used without
definitions herein will have the meanings ascribed to such terms in the Purchase
Agreement.

     Seller hereby sells and transfers its rights, title and interest in the
Purchased Assets as described on Exhibit A attached to the Purchase Agreement
                                 ---------
and made a part hereof in accordance with the terms of the Purchase Agreement.
Seller hereby represents and warrants to Purchaser that Seller is the absolute
owner of said Purchased Assets, that said Purchased Assets are free and clear of
all liens, charges and encumbrances, other than the purchase money security
interest of Seller pending receipt of the Cash Consideration, and that Seller
has full right, power and authority to sell said Purchased Assets and execute
this Bill of Sale. SELLER MAKES NO OTHER WARRANTIES OTHER THAN THOSE
SPECIFICALLY SET FORTH IN THIS BILL OF SALE AND THE PURCHASE AGREEMENT, IF ANY,
AND SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. THE PURCHASED ASSETS ARE SOLD "AS IS".

     IN WITNESS WHEREOF, Seller has caused this Bill of Sale to be executed on
the date first written above.

     COMDISCO, INC.

     _________________________________

     By:

     _________________________________

     Name:

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.
<PAGE>

                                   EXHIBIT C
                                   ---------

                                 AUCTION TERMS

Welcome to the DoveBid.com Web site (the "Web Site"), the premiere web site for
the business-to-business sale of industrial machinery, equipment, and surplus
capital assets. The services provided by DoveBid, Inc. ("DoveBid") through the
Web Site ("Service" or "Services") and the use of the Web Site are governed by
these Terms and Conditions (the "Terms and Conditions"). By accessing or using
the Services or the Web Site or by registering as either a buyer or seller
("Buyer", "Seller" or "User"), you agree that (1) you have read and familiarized
yourself with the Terms and Conditions, (2) you understand the Terms and
Conditions, and (3) your use of the Services and the Web Site will be in
accordance with the Terms and Conditions. If you do not agree to the Terms and
Conditions, you may not access or use the Services or the Web Site. The Terms
and Conditions together with any additional terms and conditions specific to a
particular auction (incorporated herein by reference) constitute the entire
agreement (the "Agreement") between DoveBid and User regarding its subject
matter and supersede and replace any and all prior or contemporaneous agreements
between the parties regarding such subject matter

Amendment of Terms and Conditions. DoveBid may amend any or all of the Terms and
Conditions (including fees and transaction rules) at any time, at DoveBid's sole
discretion, without notice. Any amendment of the Terms and Conditions will be
reflected on the Web Site. User is encouraged to periodically review the Terms
and Conditions posted on the Web Site. Use of the Services and the Web Site
constitutes acceptance of the Terms and Conditions including any amendments
thereto. The Terms and Conditions were last revised on February 17, 2000.

Role of DoveBid. DoveBid provides the Services and the Web Site solely as a
forum or venue in which Sellers may offer assets for sale and Buyers may place
offers to purchase these assets. As such, DoveBid is neither a principal
interested in the transactions, nor an agent of Buyer or Seller. Because DoveBid
is not a party to any transaction, DoveBid does not make, and should not be
construed as having made, any representation or warranty of any kind concerning
any of the offered assets or offerings, including without limitation any
representation or warranty regarding the quality, safety or legality of the
offered assets, or the truth or accuracy of any offerings. Additionally, DoveBid
makes no representation or warranty of any kind as to the ability of either
Buyer or Seller to complete a sale in accordance with these Terms and Conditions
or otherwise, and in accordance with any additional terms and conditions
specific to a particular auction. DoveBid does not have the power to transfer
title to any assets offered by Sellers. DoveBid retains sole discretion to
remove any User who does not comply with the Terms and Conditions. However,
Buyers and Sellers are solely responsible for independently verifying the
background of those Users with whom they enter into, or with whom they
prospectively will enter into, a transaction. In the event of any dispute
regarding any transaction conducted through use of the Services or the Web Site
(a "Dispute"), User hereby releases DoveBid, its affiliates and subsidiaries,
and their respective directors, officers, employees, agents, shareholders, co-
branders, partners, successors and assigns (the "Released Parties"), and each of
the foregoing, from any and all manner of action, claim or cause of action or
suit, at law or in equity, and from any and all losses, damages, costs or
expenses,

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.
<PAGE>

including without limitation court costs and attorneys' fees, which User may
have against the Released Parties, or any of them, known or unknown, disclosed
or undisclosed, which arise out of or relate in any way to a Dispute. If User is
a California resident, User waives California Civil Code (S)1542 which states:
"A general release does not extend to claims which the creditor does not know or
suspect to exist in his favor at the time of executing the release, which if
known by him must have materially affected his settlement with the debtor."

Changes to Services and/or Web Site.  User acknowledges and agrees that DoveBid
may change, modify, amend, suspend or discontinue any aspect of the Services or
the Web Site, at any time, without notice and without liability to User or to
any third party. DoveBid reserves the right to impose limits on certain features
of the Services or the Web Site, at any time, without notice and without
liability to User or to any third party.

Registration. The Services and the Web Site are only available to persons with
the legal capacity to enter into this Agreement. DoveBid may, at its sole and
absolute discretion, refuse to accept a person's (or entity's) registration, and
may, at any time after accepting registration, refuse to permit a person's (or
entity's) continuing use of the Services and the Web Site.

Password and Security.  User is solely responsible for maintaining the
confidentiality of its User name and User password. User is obligated to
complete those transactions that occur using its User name and User password,
whether such transactions are authorized or unauthorized. User agrees that it
shall immediately notify DoveBid in writing or by electronic mail of any
unauthorized use of its User name or User password.

User Information.  User will provide information to DoveBid during the
registration process and to DoveBid and other Users during the course of the use
of the Services and the Web Site (the "User Information"). User agrees and
warrants: (1) that all User Information is accurate and complete at the time of
registration, and (2) that User information will be continuously updated such
that the User Information shall at all times be current, accurate, and complete.
User grants to DoveBid a non-exclusive, worldwide, perpetual, royalty-free and
irrevocable license to use the User Information, including any associated
copyrights, trademarks, or other intellectual property or proprietary rights
User may have in the User information, for any purposes in connection with the
Services or the Web Site, subject to the terms of the DoveBid Privacy Policy.
                                                              --------------

Privacy Policy.  The terms of the DoveBid Privacy Policy are incorporated by
reference into these Terms and Conditions. User is encouraged to periodically
review the DoveBid Privacy Policy posted on the Web Site at
www.dovebid.com/os/privacy.stm posted on the Web Site.
------------------------------

User Content.  DoveBid is not responsible for the quality, accuracy,
reliability, legality or completeness of any User-provided content, including
any User Information. User is solely responsible for verifying the quality,
accuracy, reliability, legality and competitiveness of all User-provided
content, including any User Information. User acknowledges and agrees that
DoveBid has the right, but not the obligation, to monitor User-provided content,
including User Information, and to edit, correct or remove any such content that
DoveBid, in its sole discretion, deems objectionable or in violation of this
Agreement.

User Conduct.  User represents, warrants and covenants that its use of the
Services and the Web Site shall not:

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       2
<PAGE>

     (a)  violate any applicable local, state, national or international law,
statute, ordinance, rule or regulation. Without limiting the foregoing, User
represents, warrants and covenants that it will not sell or buy any assets that
may not be lawfully offered for sale or purchase in the United States and that
User will not export from the United States any asset in violation of U.S. law;

     (b)  impersonate any other person or entity, or make any misrepresentation
as to User's employment by or affiliation with any other person or entity;

     (c)  forge headers or in any manner manipulate identifiers in order to
disguise the origin of any User Information;

     (d)  upload, post, transmit, publish, or distribute any material or
information for which User does not have all necessary rights and licenses;

     (e)  upload, post, transmit, publish, or distribute any material which
infringes, violates, beaches or otherwise contravenes the rights of any third
party, including any copyright, trademark, patent, rights of privacy or
publicity or any other proprietary right;

     (f)  interfere with or disrupt the use of the Services or the Web Site by
any other User, nor "stalk", threaten, or in any manner harass another User;

     (g)  upload, post, transmit, publish, or distribute any unauthorized or
unsolicited advertising, solicitations, offers for the sale of services,
unsolicited communications, or offers for any "investment opportunities" (except
as may be permitted by the use of the Services or the Web Site as provided for
herein);

     (h)  upload, post, transmit, publish, or distribute any material or
information which contains a computer virus, or other code, files or programs
intending in any manner to disrupt or interfere with the functioning of the
Services, the Web Site, or that of other computer systems;

     (i)  use the Services or the Web Site in such a manner as to gain
unauthorized entry or access to the computer systems of others;

     (j)  upload, post, transmit, publish or distribute any material or
information which constitutes or encourages conduct that would constitute a
criminal offense, give rise to other liability, or otherwise violate applicable
law;

     (k)  upload, post, transmit, publish, or distribute any material or
information that is unlawful, or which may potentially be perceived as being
harmful, threatening, abusive, harassing, defamatory, libelous, vulgar, obscene,
or racially, ethnically, or otherwise objectionable; or

     (l)  reproduce, copy, modify, sell, distribute or otherwise exploit for any
commercial purposes the Services or the Web Site, or any component thereof
(including, but not limited to any materials or information accessible through
the Web Site).

Seller Conduct.  In addition to those other obligations set forth herein, Seller
agrees to be bound by the following:

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       3
<PAGE>

     (a)  Placing an asset for sale requires that Seller provide complete and
accurate information regarding the asset offered (the "Listing Information"). It
is the Seller's responsibility to review the Listing Information prior to its
posting on the Web Site and to immediately notify DoveBid of any changes
necessary to make the Listing Information complete and accurate at the time of
its submission, without any misrepresentation of any kind. Seller represents,
warrants and covenants that the Listing Information is complete and accurate and
actually reflects the quantity, quality, and condition of the offered assets.
Seller is obligated to update Listing Information to ensure that it is at all
times complete and accurate. Additionally, Seller represents, warrants and
covenants (1) that it has good and marketable legal title to the offered assets,
free and clear of any lien, security interest, leasehold interest, co-ownership
interest, or any other type of encumbrance or interest of any other person or
entity, (2) that it has authority to list the offered assets for sale and to
sell the offered assets, (3) no asset provided for sale on the Web Site shall be
fraudulent or counterfeit, (4) the offering by Seller of any asset on the Web
Site and the payment by Seller of any fees to DoveBid as specified in these
Terms and Conditions will not cause DoveBid to violate any applicable law,
statute, ordinance or regulation; (5) that each asset listed for sale is a
"capital asset" as those terms are understood in accordance with generally
accepted accounting principles (i.e., industrial machinery, equipment and
surplus assets), (6) that no listed asset infringes or violates (or contains any
parts or components which infringe or violate) any third party's copyright,
patent, trademark, trade secret or other intellectual property or propriety
rights, and (7) that no listed asset contains any Hazardous Substance.
Notwithstanding the foregoing, Users agree that DoveBid shall have no duty or
obligation to investigate the presence of any Hazardous Substances in or
integral to the assets. For purposes of this subparagraph, the term "Hazardous
Substances" shall mean, either individually or collectively, any chemical,
solid, liquid, gas, or other substance having the characteristics identified in,
listed under, or designated pursuant to (i) the Comprehensive Environmental
                                                ---------------------------
Response, Compensation and Liability Act of 1980 (CERCLA) as amended, 42 USCA
---------------------------------------------------------
Section 9601(4), as a "hazardous substance", (ii) the Resource, Conservation and
                                                      --------------------------
Recovery Act, 42 USCA Sections 6903(5) and 6921, as a "hazardous waste", or
------------
(iii) any other laws, statutes, or regulations of a government or political
subdivision or agency thereof, as presenting an imminent and substantial danger
to the public health or welfare or to the environment, or as otherwise requiring
special handling, collection, storage, treatment, disposal, or transportation;

     (b)  Seller agrees to pay to DoveBid a listing fee (the "Listing Fee") in
the amount of $10.00 per lot (or group of listed assets), which Listing Fee is
non-refundable. Additionally, Seller agrees to pay to DoveBid a fee (the "Sale
Fee") of five percent (5%) of the high bid for each successful sale such five
percent (5%) to be calculated based upon the gross sales price;

     (c)  Seller agrees not to contact Users with respect to the sale of assets
other than those listed through the Services;

     (d)  Seller agrees to pay the Sale Fee to DoveBid if a successful sale is
made to a User, without regard for such User's ability to perform.

Buyer Conduct.  In addition to those other obligations set forth herein, Buyer
acknowledges and agrees that by placing a bid on an asset, Buyer represents,
warrants and covenants (1) that it shall not misrepresent its ability to close
the transaction pursuant to the terms and conditions of sale, and in accordance
with these Terms and Conditions, (2) that it has the capacity to close the
transaction,

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       4
<PAGE>

and (3) that it has actual authority to enter a bid, and to enter into an
agreement to purchase the asset.

Webcast Auctions.  A "webcast" auction is an on-site auction conducted by
DoveBid that is simultaneously broadcast live over the Web Site. In connection
with a webcast auction, DoveBid may charge each Buyer a Buyer's Premium of up to
ten percent (10.0%) of the winning bid price ("Buyer's Premium") upon the
completion of a successful transaction, or some other amount is DoveBid's sole
discretion. For more details regarding whether a Buyer's Premium applies to a
particular webcast auction and to what extent, including the amount of such
Buyer's Premium, please view the appropriate auction brochure on the Web Site.
Any purchase offer that you make on the Web Site indicates your express
agreement to pay all amounts due, including any applicable Buyer's Premium.

Withdrawal of Auction/Auction Assets.  User acknowledges and agrees that assets
in an auction may be withdrawn or sold prior to the end of the designated
auction period, and/or that the auction may be discontinued, either temporarily
or permanently, all without notice to User.

Termination.  DoveBid expressly reserves the right to terminate the use of, or
to refuse to permit the use of, the Services and the Web Site by any person or
entity, at the sole and absolute discretion of DoveBid, for any reason or for no
reason.

Price Manipulation/ Bid Rigging.  Collusion between Users or any form of price
manipulation or bid rigging is strictly prohibited.

Taxes.  User acknowledges and agrees that DoveBid does not collect, and shall
not be held responsible for the collection of, any sales tax, use tax, transfer
tax, or any other tax or fee which may be assessed by any jurisdiction having
taxing authority over any transaction conducted through the Services or the Web
Site. Additionally, DoveBid is not responsible for the calculation of any taxes
or the reporting or remittance of any taxes to any taxing authority. User
expressly agrees and warrants that it shall comply with any and all applicable
laws and regulations, including without limitation, those with respect to taxes.
Users agree to defend, indemnify, and hold harmless DoveBid from and against any
and all damages, penalties, costs and expenses incurred by or imposed upon
DoveBid resulting from any failure by User to comply with applicable tax laws.

No Relationship.  User and DoveBid are independent contractors. Neither party is
an agent, representative, broker, employee, or partner of the other party. This
Agreement shall not be interpreted or construed to create an association, joint
venture, agency, franchise or partnership between the parties or to impose any
partnership obligation or liability upon either party.

Links to Third Parties.  The Services and the Web Site may provide links to the
web sites or services of others ("Third-Party Sites"). Links to such Third-Party
Sites do not constitute an endorsement by DoveBid of such Sites, or the
products, content, materials or information presented or made available by such
Sites. User acknowledges and agrees that DoveBid is not responsible for any
damages or losses caused or alleged to have been caused by the use of any Third-
Party Sites, or from the products, content, material or information presented by
or available through such Sites.

Downloading Information/Material.  User hereby releases DoveBid, its affiliates
and subsidiaries, and their respective directors, officers, employees, agents,
shareholders, co-branders, partners,

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       5
<PAGE>

successors and assigns from any and all actual or alleged damages which may
result from User downloading any information or materials from the Web Site.

Choice of Law.  This Agreement, and all questions with respect to the
interpretation of this Agreement, shall be governed by and construed in
accordance with the internal laws of the State of California and without regard
for conflict of laws provisions. User expressly consents to personal and
exclusive jurisdiction in the courts of the State of California located in San
Mateo County.

Indemnification.  User will defend, indemnify and hold harmless DoveBid, its
affiliates and subsidiaries, and their respective directors, officers,
employees, agents, shareholders, co-branders, partners, successors and assigns
(collectively, "Indemnified Parties"), from and against any claim, loss, damage,
liabilities, judgments, fees and expenses related thereto (including, without
limitation, reasonable attorney's fees) incurred by any of the Indemnified
Parties arising from or related to: (i) the use of the Services or the Web Site
by User or (2) any breach or violation of these Terms and Conditions by User and
(3) any breach of any of User's representations, warranties and covenants.

Dispute Resolution. Any controversy involving DoveBid arising from or in any way
related to this Agreement or User's use of the Services or the Web Site shall be
submitted to binding arbitration to be conducted in accordance with the Rules of
Commercial Arbitration of the American Arbitration Association ("AAA"). A single
arbitrator with knowledge of the auction business shall conduct the arbitration
in San Mateo County, California, United States of America. The parties shall
mutually agree upon such arbitrator. In the event that the parties have not
agreed to a mutually acceptable arbitrator within thirty (30) days of the date
of the notice of intention to arbitrate, the arbitrator shall be selected by the
AAA from its regularly maintained list of commercial arbitrators. Within sixty
(60) days after the arbitrator has been selected, the arbitrator shall conduct a
single hearing no longer than one (1) day in duration for the purpose of
receiving evidence and shall render a decision within ten (10) days after the
conclusion of the hearing. The Federal Rules of Evidence and the Federal Rules
of Civil Procedure shall apply to any arbitration hearing, and aggregate
deposition discovery conducted in connection with any such hearing shall not
exceed ten (10) hours for each party. The decision of the arbitrator shall be
binding and final, and the arbitration award may be filed in a court of
competent jurisdiction. In the event that a civil or administrative proceeding
with respect to any disputes subject to arbitration under this provision is
commenced, any other party to such proceeding shall be entitled to demand
arbitration with respect to that dispute and shall be entitled to a permanent
stay and injunction against any such civil or administrative proceeding. In the
event that a party asserts multiple claims or causes of action, some but not all
of which are subject to arbitration under law, any and all claims subject to
arbitration shall be submitted to arbitration in accordance with this provision.

Disclaimer of Warranties. THE SERVICES AND THE WEB SITE, INCLUDING ALL CONTENT,
FUNCTIONS, MATERIALS AND INFORMATION MADE AVAILABLE ON OR ACCESSED THROUGH THE
SERVICES OR THE WEB SITE, ARE PROVIDED ON AN "AS IS", "WHERE IS", "AS AVAILABLE"
BASIS WITHOUT REPRESENTATIONS OR WARRANTIES OF ANY KIND WHATSOEVER, EXPRESS OR
IMPLIED, INCLUDING WITHOUT LIMITATION, NON-INFRINGEMENT, MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. DOVEBID DOES NOT WARRANT THAT THE SERVICES OR
THE FUNCTIONS, FEATURES OR CONTENT CONTAINED THEREIN OR IN THE WEB SITE,
INCLUDING WITHOUT LIMITATION ANY THIRD-PARTY SOFTWARE, PRODUCTS OR OTHER
MATERIALS USED IN CONNECTION WITH THE SERVICES OR THE WEB SITE, WILL BE TIMELY,
SECURE, UNINTERRUPTED OR ERROR FREE, OR THAT DEFECTS WILL BE CORRECTED. DOVEBID

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       6
<PAGE>

MAKES NO WARRANTY THAT THE WEB SITE OR THE SERVICES WILL MEET USERS'
REQUIREMENTS, AND EXPRESSLY DISCLAIMS ANY REPRESENTATIONS, WARRANTIES OR
GUARANTEES THAT BY POSTING AN ASSET ON THE SERVICES OR THE WEB SITE, THE POSTED
ASSET WILL BE SOLD. IF USER IS DISSATISFIED WITH THE SERVICES OF THE WEB SITE,
USER'S SOLE REMEDY IS TO DISCONTINUE USING THE SERVICES OF THE WEB SITE. DOVEBID
MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING ANY GOODS OR SERVICES PURCHASED
OR OBTAINED THROUGH THE SERVICES OR THE WEB SITE OR ANY TRANSACTIONS ENTERED
INTO THROUGH THE SERVICES OF THE WEB SITE. NO ADVICE OR INFORMATION, WHETHER
ORAL OR WRITTEN, OBTAINED BY USER FROM DOVEBID OR THROUGH THE SERVICES OF THE
WEB SITE SHALL CREATE ANY WARRANTY NOT EXPRESSLY MADE HEREIN. DOVEBID EXPRESSLY
DISCLAIMS ANY RESPONSIBILITY FOR ANY MISREPRESENTATIONS OR BREACHES COMMITTED BY
ANY USER

Limitation of Liability. IN NO EVENT SHALL DOVEBID BE LIABLE FOR ANY DAMAGES
THAT ARE DIRECTLY OR INDIRECTLY RELATED TO THE USE OF, OR THE INABILITY TO USE,
THE SERVICES, THE WEB SITE OR THE CONTENT, MATERIALS AND FUNCTIONS RELATED
THERETO, INCLUDING WITHOUT LIMITATION, SPECIAL, INDIRECT, INCIDENTAL,
CONSEQUENTIAL OR PUNITIVE DAMAGES, LOSS OF REVENUE OR ANTICIPATED PROFITS OR
LOST BUSINESS, LOST GOODWILL, OR LOST SALES. IN NO EVENT SHALL THE TOTAL
LIABILITY OF DOVEBID TO A USER FOR ALL DAMAGES, LOSSES, CLAIMS AND CAUSES OF
ACTION (WHETHER IN CONTRACT OR TORT, INCLUDING, BUT NOT LIMITED TO, NEGLIGENCE
OR OTHERWISE) ARISING FROM THIS AGREEMENT OR THE USE OF THE SERVICES OR THE WEB
SITE EXCEED, IN THE AGGREGATE, ONE HUNDRED DOLLARS ($100.00).

THE FOREGOING LIMITATION SHALL APPLY AND SURVIVE NOTWITHSTANDING ANY FAILURE OF
ESSENTIAL PURPOSE OF ANY REMEDY.

Notices.

Notices shall be given:

  To DoveBid:  By email legal@DoveBid.com and by certified mail, return receipt
                                          ---
requested, to

          DoveBid, Inc., Attention Legal Department, 1241 East Hillsdale
Boulevard, Foster City, California, 94404 or to such other address as may be
designated from time to time.

  To User:  By email at the email address as reflected in User's registration
information.

Notices to User shall be deemed to have been received twenty-four (24) hours
after the email is sent. Notices to DoveBid shall be deemed to have been given
three (3) days after the date of mailing by certified mail.

Severability.  If any provision of this Agreement is held by a court of
competent jurisdiction to be invalid or unenforceable, then such provision shall
be enforced to the maximum extent permissible so as to effect the intent of this
Agreement, and the remainder of this Agreement shall continue in full force and
effect.

Waiver.  The failure of DoveBid to exercise or enforce any right or provision of
this Agreement will not deemed a waiver of such right or provision

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       7
<PAGE>

Trademarks.  DoveBid, DoveBid.com, and the logos thereof are trademarks or
service marks of DoveBid, Inc. No display or use of such marks may be made
without the express written permission of DoveBid, Inc.

(C)  2000 DoveBid, Inc.  All rights reserved.

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       8
<PAGE>

                                   EXHIBIT D
                                   ---------

                               AUCTION SCHEDULE

This Auction Schedule dated as of ___________, 2000 is entered into between
DoveBid, Inc. ("DoveBid") and Comdisco, Inc. ("Seller") and incorporates the
"Terms and Conditions" specified on the DoveBid.com Web site, other than as
specifically amended hereby, and shall be subject to the terms and conditions
agreed between the parties under the Asset Purchase and Co-Marketing Agreement
dated as of __________, 2000 (the "Asset Purchase Agreement").

1.   Duration.  DoveBid and Seller hereby agree that the assets of Seller being
     offered and accepted for auction by DoveBid as described on Schedule I
     hereto (the "Assets") at the reserve prices specified therein shall be
     subject to auction by DoveBid for a period of time commencing
     _______________and expiring _________________.

2.   Fee.  DoveBid and Seller hereby agree that the fee structure associated
     with DoveBid's auction of the Assets shall be as follows:

     Except as amended hereby, all of the Terms and Conditions referenced above
shall remain in full force and effect.

DOVEBID, INC.                           COMDISCO, INC.

By:________________________________     By:____________________________

Title:_____________________________     Title:_________________________

Date:______________________________     Date:__________________________

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.
<PAGE>

                                   EXHIBIT E
                                   ---------

                                      [*]

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       2
<PAGE>

                                   EXHIBIT F
                                   ---------

                              ASSIGNMENT AGREEMENT

     This Assignment Agreement dated as of March 7, 2000 is entered into between
DoveBid, Inc., as Assignee and Comdisco, Inc., as Assignor in connection with
the sale of Purchased Assets pursuant to the Asset Purchase and Co-Marketing
Agreement of even date herewith ("Asset Purchase Agreement").  All terms not
otherwise defined herein shall have the meaning ascribed to them in the Asset
Purchase Agreement.

     Comdisco, Inc. hereby assigns to DoveBid, Inc. and DoveBid, Inc. hereby
accepts the assignment, of all of Comdisco, Inc.'s rights and interests under
the [*] attached to the Asset Purchase Agreement as Exhibit E and made a part
hereof, entered into in connection with [*].

DOVEBID, INC.                           COMDISCO, INC.

By:________________________________     By:____________________________

Title:_____________________________     Title:_________________________

Date:______________________________     Date:__________________________

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       3
<PAGE>

                                   EXHIBIT G
                                   ---------

                           CONFIDENTIALITY AGREEMENT

* Confidential portions have been omitted from this public filing and have been
filed separately with the Securities and Exchange Commission.

                                       4
<PAGE>

                                   EXHIBIT G
                                   ---------

                           CONFIDENTIALITY AGREEMENT

     CONFIDENTIALITY AGREEMENT, dated as of October 5, 1999, between DoveBid,
Inc., a Delaware corporation having a place of business at 1241 East Hillsdale
Boulevard, Foster City, CA 94404, and COMDISCO, INC., a Delaware corporation
having its principal place of business at 6111 N. River Road, Rosemont, IL 60018
("COMDISCO").

     WHEREAS, the parties to this Confidentiality Agreement have determined to
establish terms governing the confidentiality of certain information one party
("Owner") may disclose to the other party ("Recipient"), for the purpose of
establishing a business relationship;

     NOW THEREFORE, in consideration of the premises and the mutual covenants
contained herein, the parties agree as follows:

     1.   For purposes of this Confidentiality Agreement, "Confidential
          Information" means all information or data in whatever form
          transmitted relating to the past, present or future business affairs,
          including without limitation, (i) technology lease and services
          information, methodology and procedures; plus (ii) research,
          technology, product development, or business plans, operations or
          systems, of Owner or another party whose information Owner has in its
          possession under obligations of confidentiality, which (a) is
          disclosed by Owner or its affiliates to Recipient or its affiliates,
          bearing an appropriate legend indicating its confidential or
          proprietary nature or if oral or visual is identified as confidential
          or proprietary at the time of disclosure or as otherwise disclosed in
          a manner consistent with its confidential or proprietary nature, or
          (b) is produced or developed during the working relationship between
          the parties and which would, if disclosed to competitors of either
          party, give or increase such competitors' advantage over that party or
          diminish that party's advantage over its competitors.

          Confidential Information shall not include any information of an Owner
          that:  (a) is already known to Recipient at time of its disclosure;
          (b) is or becomes publicly known through no wrongful act of Recipient;
          (c) is received from a third party free to disclose it to Recipient;
          (d) is independently developed by Recipient; (e) is communicated to a
          third party by recipient with the express written consent of the
          Owner, or (f) is lawfully required to be disclosed to any governmental
          agency or is otherwise required to be disclosed by law, provided that
          before making such disclosure the Recipient shall give the Owner an
          adequate opportunity to interpose an objection or take action to
          assure confidential handling of such information.

     2.   For a period of two (2) years from the date of disclosure to
          Recipient, Recipient shall not disclose any Confidential Information
          it receives from Owner to any person or entity except employees of
          Recipient and its affiliates who have a need to know and who have been
          informed of Recipient's obligations under this Confidentiality
          Agreement.  Recipient shall use not less than the same degree of
<PAGE>

          care to avoid disclosure of such Confidential Information as Recipient
          uses for its own confidential information of like importance.
          Recipient shall use Confidential Information of the Owner only for
          purposes consented to by Owner.

     3.   All Confidential Information disclosed by Owner to Recipient under
          this Confidentiality Agreement in tangible form (including, without
          limitation, information incorporated in computer software or held in
          electronic storage media) shall be and remain property of Owner.  All
          such Confidential Information shall be returned to Owner promptly upon
          written request and shall not thereafter be retained in any form by
          Recipient.  The rights and obligations of the parties under this
          Confidentiality Agreement shall survive any such return of
          Confidential Information.

     4.   Owner shall not have any liability or responsibility for errors or
          omissions in, or any business decisions made by Recipient in reliance
          on, any Confidential Information disclosed under this Confidentiality
          Agreement.

     5.   The parties agree that, in the event of a breach or threatened breach
          of the terms of this Confidentiality Agreement, Owner shall be
          entitled to an injunction prohibiting any such breach.  Any such
          relief shall be in addition to and not in lieu of any appropriate
          relief in the way of money damages.  The parties acknowledge that
          Confidential Information is valuable and unique and that disclosure in
          breach of this Confidentiality Agreement will result in irreparable
          injury to Owner.

     6.   Either party may terminate this Confidentiality Agreement by written
          notice to the other.  Notwithstanding any such termination, all rights
          and obligations hereunder shall survive with respect to Confidential
          Information disclosed prior to such termination.

     7.   Neither party hereto shall in any way or in any form disclose,
          publicize or advertise in any manner the discussions that give rise to
          this Confidentiality Agreement or the discussions or negotiations
          covered by this Confidentiality Agreement without the prior written
          consent of the other party.

     8.   The term "affiliate" shall mean any person or entity controlling,
          controlled by or under common control with a party.

     9.   This Confidentiality Agreement:  (a) is the complete agreement of the
          parties concerning the subject matter hereof and supersedes any prior
          such agreements; (b) may not be amended or in any manner modified
          except in writing signed by the parties; and (c) shall be governed by
          and construed in accordance with the laws of California without regard
          to its choice of law provisions.  If any provision of this
          Confidentiality Agreement is found to be unenforceable, the remainder
          shall be enforced as fully as possible and the unenforceable provision
          shall be deemed modified to the limited extent required to permit its
          enforcement in a manner most closely approximating the intention of
          the parties as expressed herein.

                                       2
<PAGE>

     10.  The parties warrant that each has the right to disclose to the other
          all information which shall be disclosed and indemnifies and holds the
          other harmless against all claims, damages and expenses, including
          reasonable legal fees, resulting from an alleged wrongful disclosure
          which would breach such warranty.

     11.  It is understood that neither party hereby grants to the other any
          rights under existing or future patents, trade secrets, copyrights or
          other proprietary information.

     12.  It is understood that there is no obligation on the part of either
          party to enter into an agreement with the other party.

     IN WITNESS WHEREOF, the parties have executed this Confidentiality
Agreement by their duly authorized representatives as of the date first above
written.

DOVEBID, INC.                            COMDISCO, INC.

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

NAME:                                    NAME:
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TITLE:                                   TITLE:
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