Document:

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                                                                   EXHIBIT 10.13

                          SECOND AMENDED AND RESTATED
                          INVESTORS' RIGHTS AGREEMENT

          This Second Amended And Restated Investors' Rights Agreement is made
as of February 25, 2000, by and among DoveBid, Inc., a Delaware corporation (the
"Company"), and the investors listed on Schedule A hereto, each of which is
                                        ----------
herein referred to as an "Investor" and collectively as the "Investors."

                                  BACKGROUND

          A.  The Company has issued 12,090,909 shares of the Company's Series A
Preferred Stock to one Investor pursuant to the Series A Preferred Stock
Purchase Agreement dated as of June 4, 1999 (the "Series A Purchase Agreement")
and has issued 16,830,635 shares of the Company's Series B Preferred Stock to
certain Investors pursuant to the Series B Preferred Stock Purchase Agreement
dated as of October 18, 1999 (the "Series B Purchase Agreement"). Such Investors
(the "Prior Investors") possesses certain rights pursuant to the Amended and
Restated Investors' Rights Agreement dated as of October 18, 1999 between the
Company and such Investor (the "Prior Agreement").

          B.  The Company and certain of the Investors (the "New Investors") are
parties to the Series C Preferred Stock Purchase Agreement of even date herewith
(the "Series C Purchase Agreement").

          C.  To induce the Company to enter into the Series C Purchase
Agreement and to induce the New Investors to invest funds in the Company
pursuant to the Series C Purchase Agreement, the Prior Investors and the Company
hereby agree that this Agreement shall govern the rights of all of the Investors
to cause the Company to register shares of Common Stock issuable to the
Investors and certain other matters as set forth herein and shall supercede the
Prior Agreement.

          Now, therefore, the parties hereby agree as follows:

          1.  Registration Rights.  The Company covenants and agrees as follows:
              -------------------

              1.1   Definitions.  For purposes of this Agreement:
                    -----------

                    (a)  The term "Act" means the Securities Act of 1933, as
     amended.

                    (b)  The term "Form S-3" means such form under the Act as in
     effect on the date hereof or any registration form under the Act
     subsequently adopted by the Securities and Exchange Commission ("SEC")
     which permits inclusion or incorporation of substantial information by
     reference to other documents filed by the Company with the SEC.

                    (c)  The term "Holder" means any person, including the
     Investors, owning or having the right to acquire Registrable Securities or
     any assignee thereof in accordance with Section 1.13 hereof.
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               (d) The term "Initiating Holders" means Holders, who own at least
     fifty percent (50%) of the Registrable Securities then outstanding.

               (e) The term "1934 Act" means the Securities Exchange Act of
     1934, as amended.

               (f) "Qualifying Acquisition" means any merger or consolidation of
     the Company with or into another entity resulting in the stockholders of
     the Company holding less than a majority of the voting power of the
     surviving Company, or the sale by the Company's stockholders of more than
     50% of the voting power of the Company in one transaction or series of
     related transactions, other than (i) open market sales or (ii) any sale to
     a person or entity who is an affiliate of the Company within the meaning of
     the Act, that has not been approved by the Company's Board of Directors by
     unanimous vote.

               (g) A "Qualifying IPO" means the consummation of the sale of
     securities pursuant to a closing of a bona fide, firm-commitment,
     underwritten public offering of shares of Common Stock registered under the
     Act, raising gross proceeds of at least $50,000,000 in the aggregate;
     provided, that immediately after such closing the Company's Common Stock is
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     listed on a national securities exchange or over-the-counter market.

               (h) The term "register," "registered," and "registration" refer
     to a registration effected by preparing and filing a registration statement
     or similar document in compliance with the Act, and the declaration or
     ordering of effectiveness of such registration statement or document.

               (i) The term "Registrable Securities" means (i) the Common Stock
     issuable or issued upon conversion of (A) the Series A Preferred Stock
     issued pursuant to the Series A Purchase Agreement, (B) the Series B
     Preferred Stock issued pursuant to the Series B Purchase Agreement, (C) the
     Series C Preferred Stock issued pursuant to the Series C Purchase Agreement
     or (D) the Series C Preferred Stock issued or issuable pursuant to the
     Warrant issued under the Series C Purchase Agreement (the "Warrant"); and
     (ii) any Common Stock of the Company issued as (or issuable upon the
     conversion or exercise of any warrant, right or other security which is
     issued as) a split, dividend or other distribution with respect to, or in
     exchange for or in replacement of, such Series A, B or C Preferred Stock or
     Common Stock; excluding in all cases, however, any Registrable Securities
     sold by a person in a transaction in which such person's rights under this
     Section 1 are not assigned in accordance with this Agreement and any
     Registrable Securities sold to the public in registered public offering or
     sold in accordance with Rule 144 promulgated under the Securities Act.

               (j) The number of shares of "Registrable Securities then
     outstanding" shall mean the number of shares of Common Stock then
     outstanding which are, and the number of shares of Common Stock issuable
     pursuant to then exercisable or convertible securities which are,
     Registrable Securities.

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          1.2  Request for Registration.
               ------------------------

               (a)  If the Company shall receive at any time after the earlier
of (i) November 30, 2001 or (ii) six (6) months after the effective date of the
first registration statement for a public offering of securities of the Company
(other than a registration statement relating to either the sale of securities
to employees of the Company pursuant to a stock option, stock purchase or
similar plan or a SEC Rule 145 transaction), a written request from the
Initiating Holders that the Company file a registration statement under the Act
covering the registration of at least twenty percent (20%) of the Registrable
Securities then outstanding (or a lesser percent if the anticipated aggregate
offering price, net of underwriting discounts and commissions, would exceed
$7,000,000), then the Company shall, within ten (10) days after the receipt
thereof, give written notice of such request to all Holders and shall, subject
to the limitations of subsection 1.2(b), use its best efforts to effect as soon
as practicable the registration under the Act of all Registrable Securities
which the Holders request to be registered within twenty (20) days after the
mailing of such notice by the Company in accordance with Section 3.5.

               (b)  If the Initiating Holders intend to distribute the
Registrable Securities covered by their request by means of an underwriting,
they shall so advise the Company as a part of their request made pursuant to
this Section 1.2, and the Company shall include such information in the written
notice referred to in subsection 1.2(a). The underwriter will be selected by a
majority in interest of the Initiating Holders and shall be reasonably
acceptable to the Company. In such event, the right of any Holder to include
such Holder's Registrable Securities in such registration shall be conditioned
upon such Holder's participation in such underwriting and the inclusion of such
Holder's Registrable Securities in the underwriting (unless otherwise mutually
agreed by a majority in interest of the Initiating Holders and such Holder) to
the extent provided herein. All Holders proposing to distribute their securities
through such underwriting shall (together with the Company as provided in
subsection 1.4(e)) enter into an underwriting agreement in customary form with
the underwriter or underwriters selected for such underwriting by a majority in
interest of the Initiating Holders. Notwithstanding any other provision of this
Section 1.2, if the underwriter advises the Initiating Holders in writing that
marketing factors require a limitation of the number of shares to be
underwritten, then the Initiating Holders shall so advise all Holders of
Registrable Securities which would otherwise be underwritten pursuant hereto,
and the number of shares of Registrable Securities that may be included in the
underwriting shall be allocated among all Holders thereof, including the
Initiating Holders, in proportion (as nearly as practicable) to the amount of
Registrable Securities of the Company owned by each Holder; provided, however,
that the number of shares of Registrable Securities to be included in such
underwriting shall not be reduced unless all other securities are first entirely
excluded from the underwriting.

               (c)  The Company is obligated to effect only two (2) such
registrations pursuant to this Section 1.2.

               (d)  Notwithstanding the foregoing, if the Company shall furnish
to Holders requesting a registration statement pursuant to this Section 1.2, a
certificate signed by the Chief Executive Officer of the Company stating that in
the good faith judgment of the Board of Directors of the Company, it would be
seriously detrimental to the Company and its shareholders for such registration
statement to be filed and it is therefore essential to defer the filing of

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such registration statement, the Company shall have the right to defer taking
action with respect to such filing for a period of not more than one hundred
twenty (120) days after receipt of the request of the Initiating Holders;
provided, however, that the Company may not utilize this right more than once in
any twelve-month period.

               (e)  In addition, the Company shall not be obligated to effect,
or to take any action to effect, any registration pursuant to this Section 1.2:

                    (i)  During the period starting with the date thirty (30)
     days prior to the Company's good faith estimate of the date of filing of,
     and ending on a date one hundred eighty (180) days after the effective date
     of, a registration subject to Section 1.3 hereof, provided that the Company
     is actively employing in good faith all reasonable efforts to cause such
     registration statement to become effective; or

                    (ii) If the Initiating Holders propose to dispose of shares
     of Registrable Securities that may be immediately registered on Form S-3
     pursuant to a request made pursuant to Section 1.12 below.

          1.3  Company Registration.  If (but without any obligation to do so)
               --------------------
the Company proposes to register (including for this purpose a registration
effected by the Company for stockholders other than the Holders) any of its
stock or other securities under the Act in connection with the public offering
of such securities (other than a registration relating solely to the sale of
securities to participants in a Company stock plan, a SEC Rule 145 transaction
or a registration on any form which does not include substantially the same
information as would be required to be included in a registration statement
covering the sale of the Registrable Securities), the Company shall, at such
time, promptly give each Holder written notice of such registration.  Upon the
written request of each Holder given within twenty (20) days after mailing of
such notice by the Company in accordance with Section 3.5, the Company shall,
subject to the provisions of Section 1.8, cause to be registered under the Act
all of the Registrable Securities that each such Holder has requested to be
registered.

          1.4  Obligations of the Company.  Whenever required under this Section
               --------------------------
1 to effect the registration of any Registrable Securities, the Company shall,
as expeditiously as reasonably possible:

               (a)  Prepare and file with the SEC a registration statement with
respect to such Registrable Securities and use its best efforts to cause such
registration statement to become effective, and, upon the request of the Holders
of a majority of the Registrable Securities registered thereunder, keep such
registration statement effective for up to one hundred twenty (120) days or
until the distribution contemplated in the Registration Statement has been
completed; provided, however, that (i) such 120-day period shall be extended for
a period of time equal to the period the Holder refrains from selling any
securities included in such registration (A) at the request of an underwriter of
Common Stock (or other securities) of the Company or (B) when a prospectus must
be updated pursuant to Section 1.4(f) below; and (ii) in the case of any
registration of Registrable Securities on Form S-3 which are intended to be
offered on a continuous or delayed basis, such 120-day period shall be extended,
if necessary, to keep the registration statement effective until all such
Registrable Securities are sold, provided that

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Rule 415, or any successor rule under the Act, permits an offering on a
continuous or delayed basis, and provided further that applicable rules under
the Act governing the obligation to file a post-effective amendment permit, in
lieu of filing a post-effective amendment which (1) includes any prospectus
required by Section 10(a)(3) of the Act or (2) reflects facts or events
representing a material or fundamental change in the information set forth in
the registration statement, the incorporation by reference of information
required to be included in (1) and (2) above to be contained in periodic reports
filed pursuant to Section 13 or 15(d) of the 1934 Act in the registration
statement.

          (b) Prepare and file with the SEC such amendments and supplements to
such registration statement and the prospectus used in connection with such
registration statement as may be necessary to comply with the provisions of the
Act with respect to the disposition of all securities covered by such
registration statement.

          (c) Furnish to the Holders such numbers of copies of a prospectus,
including a preliminary prospectus, in conformity with the requirements of the
Act, and such other documents as they may reasonably request in order to
facilitate the disposition of Registrable Securities owned by them.

          (d) Use its best efforts to register and qualify the securities
covered by such registration statement under such other securities or Blue Sky
laws of such jurisdictions as shall be reasonably requested by the Holders,
provided that the Company shall not be required in connection therewith or as a
condition thereto to qualify to do business or to file a general consent to
service of process in any such states or jurisdictions.

          (e) In the event of any underwritten public offering, enter into and
perform its obligations under an underwriting agreement, in usual and customary
form, with the managing underwriter of such offering. Each Holder participating
in such underwriting shall also enter into and perform its obligations under
such an agreement.

          (f) Notify each Holder of Registrable Securities covered by such
registration statement at any time when a prospectus relating thereto is
required to be delivered under the Act of the happening of any event as a result
of which the prospectus included in such registration statement, as then in
effect, includes an untrue statement of a material fact or omits to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading in the light of the circumstances then existing.

          (g) Cause all such Registrable Securities registered hereunder to be
listed on each securities exchange on which similar securities issued by the
Company are then listed.

          (h) Provide a transfer agent and registrar for all Registrable
Securities registered hereunder and a CUSIP number for all such Registrable
Securities, in each case not later than the effective date of such registration.

          (i) Furnish, at the request of any Holder requesting registration of
Registrable Securities pursuant to this Section 1, on the date that such
Registrable Securities are

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delivered to the underwriters for sale in connection with a registration
pursuant to this Section 1, if such securities are being sold through
underwriters, or, if such securities are not being sold through underwriters, on
the date that the registration statement with respect to such securities becomes
effective, (i) an opinion, dated such date, of the counsel representing the
Company for the purposes of such registration, in form and substance as is
customarily given to underwriters in an underwritten public offering, addressed
to the underwriters, if any, and to the Holders requesting registration of
Registrable Securities and (ii) a letter dated such date, from the independent
certified public accountants of the Company, in form and substance as is
customarily given by independent certified public accountants to underwriters in
an underwritten public offering, addressed to the underwriters, if any, and to
the Holders requesting registration of Registrable Securities.

          1.5  Furnish Information.
               -------------------

               (a)  It shall be a condition precedent to the obligations of the
Company to take any action pursuant to this Section I with respect to the
Registrable Securities of any selling Holder that such Holder shall furnish to
the Company such information regarding itself, the Registrable Securities held
by it, and the intended method of disposition of such securities as shall be
required to effect the registration of such Holder's Registrable Securities.

               (b)  The Company shall have no obligation with respect to any
registration requested pursuant to Section 1.2 or Section 1.12 if, due to the
operation of subsection 1.5(a), the number of shares or the anticipated
aggregate offering price of the Registrable Securities to be included in the
registration does not equal or exceed the number of shares or the anticipated
aggregate offering price required to originally trigger the Company's obligation
to initiate such registration as specified in subsection 1.2(a) or subsection
1.12(b)(2), whichever is applicable.

          1.6  Expenses of Demand Registration.  All expenses other than
               -------------------------------
underwriting discounts and commissions incurred in connection with
registrations, filings or qualifications pursuant to Section 1.2, including
(without limitation) all registration, filing and qualification fees, printers'
and accounting fees, fees and disbursements of counsel for the Company, and the
reasonable fees and disbursements of one counsel for the selling Holders shall
be borne by the Company; provided, however, that the Company shall not be
required to pay for any expenses of any registration proceeding begun pursuant
to Section 1.2 if the registration request is subsequently withdrawn at the
request of the Holders of a majority of the Registrable Securities to be
registered (in which case each Holder shall bear a pro rata portion of such
expenses, based on the ratio of the number of Registrable Securities to have
been included in such registration by such Holder compared to the total number
of Registrable Securities to have been included by all Holders), unless the
Holders of a majority of the Registrable Securities agree to forfeit their right
to one demand registration pursuant to Section 1.2; provided further, however,
that if at the time of such withdrawal, the Holders have learned of a material
adverse change in the condition, business, or prospects of the Company from that
known to the Holders at the time of their request and have withdrawn the request
with reasonable promptness following disclosure by the Company of such material
adverse change, then the Holders shall not be required to pay any of such
expenses and shall retain their rights pursuant to Section 1.2.

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          1.7  Expenses of Company Registration.  The Company shall bear and pay
               --------------------------------
all expenses incurred in connection with any registration, filing or
qualification of Registrable Securities with respect to the company
registrations pursuant to Section 1.3 and the firsts two Form S-3 registrations
pursuant to Section 1.12 below, for each Holder, including (without limitation)
all registration, filing, and qualification fees, printers and accounting fees
relating or apportionable thereto, but excluding underwriting discounts and
commissions relating to Registrable Securities.  In addition, the Company shall
pay the reasonable fees and disbursements of one counsel for the selling
Holders.

          1.8  Underwriting Requirements.  In connection with any offering
               -------------------------
involving an underwriting of shares of the Company's capital stock, the Company
shall not be required under Section 1.3 to include any of the Holders'
securities in such underwriting unless they accept the terms of the underwriting
as agreed upon between the Company and the underwriters selected by it (or by
other persons entitled to select the underwriters), and then only in such
quantity as the underwriters determine in their sole discretion will not
jeopardize the success of the offering by the Company. If the total amount of
securities, including Registrable Securities, requested by stockholders to be
included in such offering exceeds the amount of securities sold other than by
the Company that the underwriters determine in their sole discretion is
compatible with the success of the offering, then the Company shall be required
to include in the offering only that number of such securities, including
Registrable Securities, which the underwriters determine in their sole
discretion will not jeopardize the success of the offering (the securities so
included to be apportioned pro rata among the selling stockholders according to
the total amount of securities entitled to be included therein owned by each
selling stockholder or in such other proportions as shall mutually be agreed to
by such selling stockholders) but in no event shall:

               (i)  the amount of securities of the selling Holders included in
     the offering be reduced below thirty percent (30%) of the total amount of
     securities included in such offering, unless such offering is the initial
     public offering of the Company's securities in which case the selling
     stockholders may be excluded if the underwriters make the determination
     described above and no other stockholder's securities are included; or

               (ii) notwithstanding (i) above, any shares being sold by a
     stockholder exercising a demand registration right similar to that granted
     in Section 1.2 above be excluded from such offering.

For purposes of the preceding parenthetical concerning apportionment, for any
selling stockholder which is a holder of Registrable Securities and which is a
partnership or corporation, the partners, retired partners, members, retired
members and stockholders of such holder, or the estates and family members of
any such partners, retired partners, members, retired members and any trusts for
the benefit of any of the foregoing persons shall be deemed to be a single
"selling stockholder," and any pro-rata reduction with respect to such "selling
stockholder" shall be based upon the aggregate amount of shares carrying
registration rights owned by all entities and individuals included in such
"selling stockholder," as defined in this sentence.

          1.9  Delay of Registration.  No Holder shall have any right to obtain
               ---------------------
or seek an injunction restraining or otherwise delaying any such registration
filed with and declared effec-

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tive by the SEC as the result of any controversy that might arise with respect
to the interpretation or implementation of this Section 1.

          1.10 Indemnification.  In the event any Registrable Securities are
               ---------------
included in a registration statement under this Section 1the following shall
apply.

               (a)  To the extent permitted by law, the Company will indemnify
and hold harmless each Holder, the partners, officers, directors, stockholders
and members of each Holder, any underwriter (as defined in the Act) for such
Holder and each person, if any, who controls such Holder or underwriter within
the meaning of the Act or the 1934 Act, against any losses, claims, damages or
liabilities (joint or several) to which they may become subject under the Act,
or the 1934 Act, insofar as such losses, claims, damages or liabilities (or
actions in respect thereof) arise out of or are based upon any of the following
statements, omissions or violations (collectively a "Violation"):

                    (i)   any untrue statement or alleged untrue statement of a
     material fact contained in such registration statement, including any
     preliminary prospectus or final prospectus contained therein, or any
     amendments or supplements thereto,

                    (ii)  the omission or alleged omission to state therein a
     material fact required to be stated therein, or necessary to make the
     statements therein not misleading, or

                    (iii) any violation or alleged violation by the Company of
     the Act, the 1934 Act, any other federal or state law, or any rule or
     regulation promulgated under the Act or the 1934 Act;

and the Company will pay to each such Holder, underwriter or controlling person
any legal or other expenses reasonably incurred by them in connection with
investigating or defending any such loss, claim, damage, liability or action;
provided, however, that the indemnity agreement contained in this subsection
1.10(a) shall not apply to amounts paid in settlement of any such loss, claim,
damage, liability or action if such settlement is effected without the consent
of the Company (which consent shall not be unreasonably withheld), nor shall the
Company be liable in any such case for any such loss, claim, damage, liability
or action to the extent that it arises out of or is based upon a Violation which
occurs in reliance upon and in conformity with written information furnished
expressly for use in connection with such registration by any such Holder,
underwriter or controlling person.

               (b)  To the extent permitted by law, each selling Holder will
indemnify and hold harmless the Company, each of its directors, each of its
officers who has signed the registration statement, each person, if any, who
controls the Company within the meaning of the Act, any underwriter, any other
Holder selling securities in such registration statement and any controlling
person of any such underwriter or other Holder, against any losses, claims,
damages or liabilities (joint or several) to which any of the foregoing persons
may become subject, under the Act, or the 1934 Act or any other federal or state
law insofar as such losses, claims, damages or liabilities (or actions in
respect thereto) arise out of or are based upon any Violation, in each case to
the extent (and only to the extent) that such Violation occurs in reliance upon
and in con-

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formity with written information furnished by such Holder expressly for use in
connection with such registration; and each such Holder will pay any legal or
other expenses reasonably incurred by any person intended to be indemnified
pursuant to this subsection 1.10(b), in connection with investigating or
defending any such loss, claim, damage, liability or action; provided, however,
that the indemnity agreement contained in this subsection 1.10(b) shall not
apply to amounts paid in settlement of any such loss, claim, damage, liability
or action if such settlement is effected without the consent of the Holder,
which consent shall not be unreasonably withheld; provided, that, in no event
shall any indemnity under this subsection 1.10(b) exceed the net proceeds from
the offering received by such Holder.

          (c) Promptly after receipt by an indemnified party under this Section
1.10 of notice of the commencement of any action (including any governmental
action), such indemnified party will, if a claim in respect thereof is to be
made against any indemnifying party under this Section 1.10, deliver to the
indemnifying party a written notice of the commencement thereof and the
indemnifying party shall have the right to participate in, and, to the extent
the indemnifying party so desires, jointly with any other indemnifying party
similarly noticed, to assume the defense thereof with counsel mutually
satisfactory to the parties; provided, however, that an indemnified party
(together with all other indemnified parties which may be represented without
conflict by one counsel) shall have the right to retain one separate counsel,
with the fees and expenses to be paid by the indemnifying party, if
representation of such indemnified party by the counsel retained by the
indemnifying party would be inappropriate due to actual or potential differing
interests between such indemnified party and any other party represented by such
counsel in such proceeding. The failure to deliver written notice to the
indemnifying party within a reasonable time of the commencement of any such
action, if prejudicial to its ability to defend such action, shall relieve such
indemnifying party of any liability to the indemnified party under this Section
1.10, but the omission so to deliver written notice to the indemnifying party
will not relieve it of any liability that it may have to any indemnified party
otherwise than under this Section 1.10.

          (d) If the indemnification provided for in this Section 1.10 is held
by a court of competent jurisdiction to be unavailable to an indemnified party
with respect to any loss, liability, claim, damage or expense referred to
therein, then the indemnifying party, in lieu of indemnifying such indemnified
party hereunder, shall contribute to the amount paid or payable by such
indemnified party as a result of such loss, liability, claim, damage or expense
in such proportion as is appropriate to reflect the relative fault of the
indemnifying party on the one hand and of the indemnified party on the other in
connection with the statements or omissions that resulted in such loss,
liability, claim, damage or expense as well as any other relevant equitable
considerations; provided that in no event shall any contribution by a Holder
under this Section 1.10(d) exceed the gross proceeds from the offering received
by such Holder. The relative fault of the indemnifying party and of the
indemnified party shall be determined by reference to, among other things,
whether the untrue or alleged untrue statement of a material fact or the
omission to state a material fact relates to information supplied by the
indemnifying party or by the indemnified party and the parties' relative intent,
knowledge, access to information, and opportunity to correct or prevent such
statement or omission.

          (e) Notwithstanding the foregoing, to the extent that the provisions
on indemnification and contribution contained in the underwriting agreement
entered into in con-

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nection with the underwritten public offering are in conflict with the foregoing
provisions, the provisions in the underwriting agreement shall control, provided
that the Company shall use its reasonable efforts to cause such provisions to
conform to those set forth herein.

               (f)  The obligations of the Company and Holders under this
Section 1.10 shall survive the completion of any offering of Registrable
Securities in a registration statement under this Section 1, and otherwise.

          1.11 Reports Under 1934 Act. With a view to making available to the
               ----------------------
Holders the benefits of Rule 144 promulgated under the Act and any other rule or
regulation of the SEC that may at any time permit a Holder to sell securities of
the Company to the public without registration or pursuant to a registration on
Form S-3, the Company agrees to:

               (a)  make and keep public information available, as those terms
     are understood and defined in SEC Rule 144, at all times after the
     effective date of the first registration statement filed by the Company for
     the offering of its securities to the general public;

               (b)  file with the SEC in a timely manner all reports and other
     documents required of the Company under the Act and the 1934 Act; and

               (c)  furnish to any Holder, so long as the Holder owns any
     Registrable Securities, forthwith upon request (i) a written statement by
     the Company that it has complied with the reporting requirements of SEC
     Rule 144 (at any time after the effective date of the first registration
     statement filed by the Company), the Act and the 1934 Act (at any time
     after it has become subject to such reporting requirements), or that it
     qualifies as a registrant whose securities may be resold pursuant to Form
     S-3 (at any time after it so qualifies), (ii) a copy of the most recent
     annual or quarterly report of the Company and such other reports and
     documents so filed by the Company, and (iii) such other information as may
     be reasonably requested in availing any Holder of any rule or regulation of
     the SEC which permits the selling of any such securities without
     registration or pursuant to such form.

          1.12 Form S-3 Registration.  In case the Company shall receive from a
               ---------------------
Holder or Holders a written request or requests that the Company effect a
registration on Form S-3 and any related qualification or compliance with
respect to all or a part of the Registrable Securities owned by such Holder or
Holders, the Company will:

               (a)  promptly give written notice of the proposed registration,
     and any related qualification or compliance, to all other Holders; and

               (b)  as soon as practicable, effect such registration and all
     such qualifications and compliances as may be so requested and as would
     permit or facilitate the sale and distribution of all or such portion of
     such Holder's or Holders' Registrable Securities as are specified in such
     request, together with all or such portion of the Registrable Securities of
     any other Holder or Holders joining such request as are specified in a
     written request given within 15 days after receipt of such written notice
     from the Com-

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     pany; provided, however, that the Company shall not be obligated to effect
     any such registration, qualification or compliance, pursuant to this
     Section 1.12: (i) if Form S-3 is not available for such offering by the
     Holders; (ii) if the Holders, together with the holders of any other
     securities of the Company entitled to inclusion in such registration,
     propose to sell Registrable Securities and such other securities (if any)
     at an aggregate price to the public (net of any underwriters' discounts or
     commissions) of less than $1,000,000; (iii) if the Company shall furnish to
     the Holders a certificate signed by the Chief Executive Officer of the
     Company stating that in the good faith judgment of the Board of Directors
     of the Company, it would be seriously detrimental to the Company and its
     stockholders for such Form S-3 Registration to be effected at such time, in
     which event the Company shall have the right to defer the filing of the
     Form S-3 registration statement for a period of not more than 90 days after
     receipt of the request of the Holder or Holders under this Section 1.12;
     provided, however, that the Company shall not utilize this right (A) more
     than once in any twelve month period or (B) if it has exercised the
     deferral right in Section 1.2(d) in the previous twelve month period; (iv)
     if the Company has, within the twelve (12) month period preceding the date
     of such request, already effected two registrations on Form S-3 for the
     Holders pursuant to this Section 1.12; or (v) in any particular
     jurisdiction in which the Company would be required to qualify to do
     business or to execute a general consent to service of process in effecting
     such registration, qualification or compliance.

Subject to the foregoing, the Company shall file a registration statement
covering the Registrable Securities and other securities so requested to be
registered as soon as practicable after receipt of the request or requests of
the Holders. All expenses incurred in connection with a registration requested
pursuant to Section 1.12, including (without limitation) all registration,
filing, qualification, printer's and accounting fees and the reasonable fees and
disbursements of one counsel for the selling Holder or Holders and counsel for
the Company, but excluding any underwriters' discounts or commissions associated
with Registrable Securities, shall for the first two such registrations be borne
by the Company and, thereafter shall be borne pro rata by the Holder or Holders
participating in the Form S-3 Registration. Registrations effected pursuant to
this Section 1.12 shall not be counted as demands for registration or
registrations effected pursuant to Sections 1.2 or 1.3, respectively.

          1.13 Assignment of Registration Rights.  The rights to cause the
               ---------------------------------
Company to register Registrable Securities pursuant to this Section 1 may be
assigned (but only with all related obligations) by a Holder to a wholly-owned
subsidiary of a corporate Holder or to a transferee or assignee of Registrable
Securities who, after such assignment or transfer, holds at least 10% of the
Registrable Securities (subject to appropriate adjustment for stock splits,
stock dividends, combinations and other recapitalizations), provided the Company
is, within a reasonable time after such transfer, furnished with written notice
of the name and address of such transferee or assignee and the securities with
respect to which such registration rights are being assigned; and provided,
further, that such assignment shall be effective only if immediately following
such transfer the further disposition of such securities by the transferee or
assignee is restricted under the Act. For the purposes of determining the number
of shares of Registrable Securities held by a transferee or assignee, the
holdings of transferees and assignees of a partnership or limited liability
company who are partners or members or retired partners or members of such
entity

                                       11
<PAGE>

(including spouses and ancestors, lineal descendants and siblings of such
partners or members or spouses who acquire Registrable Securities by gift, will
or intestate succession) shall be aggregated together and with the partnership
or limited liability company; provided that all assignees and transferees who
would not qualify individually for assignment of registration rights shall have
a single attorney-in-fact for the purpose of exercising any rights, receiving
notices or taking any action under this Section 1.

          1.14 Limitations on Subsequent Registration Rights.  From and after
               ---------------------------------------------
the date of this Agreement, the Company shall not, without the prior written
consent of the Holders of a majority of the outstanding Registrable Securities,
enter into any agreement with any holder or prospective holder of any securities
of the Company which would allow such holder or prospective holder (a) to obtain
registration rights superior to or on parity with the rights contained in this
Agreement, (b) to include such securities in any registration filed under
Section 1.2 hereof, unless under the terms of such agreement, such holder or
prospective holder may include such securities in any such registration only to
the extent that the inclusion of its securities will not reduce the amount of
the Registrable Securities of the Holders which is included or (c) to make a
demand registration which could result in such registration statement being
declared effective prior to the earlier of either of the dates set forth in
subsection 1.2(a) or within one hundred twenty (120) days of the effective date
of any registration effected pursuant to Section 1.2.

          1.15 Market Stand-Off Agreement.  Each Investor hereby agrees that,
               --------------------------
during the period of duration specified by the Company and an underwriter of
common stock or other securities of the Company, following the effective date of
a Qualifying IPO, such Investor shall not, to the extent requested by the
Company and such underwriter, directly or indirectly sell, offer to sell,
contract to sell (including, without limitation, any short sale), grant any
option to purchase or otherwise transfer or dispose of (other than to donees who
agree to be similarly bound) any securities of the Company held by it at any
time during such period except common stock included in such registration;
provided, however, that:

               (a)  Such agreement shall not exceed one hundred eighty (180)
     days; and

               (b)  An Investor shall not be subject to such agreement unless
     substantially all executive officers and directors of the Company enter
     into similar agreements and all other Investors and holders of other
     registration rights are subject to or obligated to enter into similar
     agreements.

In order to enforce the foregoing covenant, the Company may impose stop-transfer
instructions with respect to all securities of the Company held by each Investor
(and the shares or securities of every other person subject to the foregoing
restriction) until the end of such period.

          1.16 Termination of Registration Rights.  No Holder shall be entitled
               ----------------------------------
to exercise any right provided for in this Section 1 after the earlier of (a)
five (5) years following a Qualifying IPO (b) after a Qualifying Acquisition or
(c) with respect to any Holder which then owns one percent (1%) or less of the
outstanding capital stock of the Company, such time as the Holder can sell all
such stock under Rule 144 (or any successor rule) without restriction (including
without being subject to any sales volume limitation).

                                       12
<PAGE>

     2.   Covenants of the Company.
          ------------------------

          2.1  Delivery of Financial Statements.  The Company shall deliver to
               --------------------------------
each Investor, for so long as such Investor continues to own at least five
percent (5%) of the Company's outstanding capital stock, on an as-converted
basis, and the Warrant, as if exercised and the shares acquired thereunder
converted, or, if less than five percent (5%) of such securities are purchased
by an Investor pursuant to the Series C Agreement but the Investor has purchased
at least 3,745,000 shares of Series C Preferred Stock thereunder, for so long as
such Investor continues to own all of the shares of Series C Preferred Stock
purchased thereunder or the Common Stock into which such shares may be
converted:

               (a) as soon as practicable, but in any event within ninety (90)
     days after the end of each fiscal year of the Company, a statement of
     operations for such fiscal year, a balance sheet of the Company and
     statement of stockholder's equity as of the end of such year, and a cash
     flow statement for such year, such year-end financial reports to be in
     reasonable detail, prepared in accordance with generally accepted
     accounting principles ("GAAP"), and audited and certified by independent
     public accountants of nationally recognized standing selected by the
     Company;

               (b) as soon as practicable, but in any event within forty-five
     (45) days after the end of each of the quarters of each fiscal year of the
     Company, an unaudited statement of operations and cash flow statement, for
     such fiscal quarter and setting forth year-to-date financial information,
     and an unaudited balance sheet as of the end of such fiscal quarter;

               (c) within twenty (20) days after the end of each month, an
     unaudited statement of operations and cash flow statement for such month
     and setting forth year-to-date financial information, and an unaudited
     balance sheet as of the end of such month, all in reasonable detail;

               (d) as soon as practicable, but in any event thirty (30) days
     prior to the end of each fiscal year, a financial budget and business plan
     for the next fiscal year, prepared on a monthly and quarterly basis, in
     form and substance reasonably acceptable to Investors;

               (e) with respect to the financial statements called for in
     subsection (b) and (c) of this Section 2.1, an instrument executed by the
     Chief Financial Officer or Chief Executive Officer of the Company
     certifying that such financials were prepared in accordance with GAAP
     consistently applied with prior practice for earlier periods (with the
     exception of footnotes that may be required by GAAP) and fairly present the
     financial condition of the Company and its results of operations for the
     period specified, subject to the year-end audit adjustment; and

               (f) such other information relating to the financial condition,
     business, prospects or corporate affairs of the Company as the Investor may
     from time to time reasonably request; provided, however that the Company
                                           --------  -------
     shall not be obligated pursuant to

                                       13
<PAGE>

     this Section 2.1(f) to provide access to any information which it
     reasonably considers a trade secret or other proprietary intellectual
     property information, unless the Investor has agreed to maintain such
     information in confidence.

          2.2  Inspection.  The Company shall permit each Investor, at such
               ----------
Investor's expense, to visit and inspect the Company's properties, to examine
its books of account and records and to discuss the Company's affairs, finances
and accounts with its officers, all at such reasonable times as may be requested
by the Investor; provided, however, that the Company shall not be obligated
                 --------  -------
pursuant to this Section 2.2 to provide access to any trade secret or other
proprietary intellectual property information, unless the Investor has agreed to
maintain such information in confidence.

          2.3  Termination of Information and Inspection Covenants.  The
               ---------------------------------------------------
covenants set forth in Sections 2.1 and 2.2 shall terminate and be of no further
force or effect upon the earlier of (A) immediately prior to the first closing
of a Qualifying IPO, (B) the Company first becoming subject to the periodic
reporting requirements of Sections 12(g) or 15(d) of the 1934 Act or (C) after a
Qualifying Acquisition.

          2.4  Right of First Offer.  Subject to the terms and conditions
               --------------------
specified in this Section 2.4, the Company hereby grants to each Major Investor
(as hereinafter defined) a right of first offer with respect to future sales by
the Company of its Shares (as hereinafter defined). For purposes of this Section
2.4, a "Major Investor" means any Investor who holds at least 1,500,000 shares
of Series A or B Preferred Stock (or the Common Stock issued upon conversion
thereof) issued pursuant to the Series A or B Purchase Agreements or who holds
any number of shares of Series C Preferred Stock issued or issuable pursuant to
the Series C Purchase Agreement or the Warrant.  For purposes of this Section
2.4, Investor includes any general or limited partners, members or affiliates of
an Investor, and the shares held by such general or limited partners, members or
affiliates shall be aggregated for purposes of determining whether the Investor
is a Major Investor.  An Investor shall be entitled to apportion the right of
first offer hereby granted it among itself and its partners, members and
affiliates in such proportions as it deems appropriate.  Each time the Company
proposes to offer any shares of, or securities convertible into or exercisable
for any shares of, any class of its capital stock ("Shares"), the Company shall
first make an offering of such Shares to each Major Investor in accordance with
the following provisions.

               (a)  The Company shall deliver a notice by certified mail
("Notice") to the Major Investors stating (i) its bona fide intention to offer
such Shares, (ii) the number of such Shares to be offered, and (iii) the price
and terms, if any, upon which it proposes to offer such Shares.

               (b)  Within 10 business days after receipt of the Notice, the
Major Investors may elect to purchase or obtain, at the price and on the terms
specified in the Notice, up to that portion of such Shares which equals the
proportion that the number of shares of Common Stock issued and held, or
issuable upon conversion of the Series A, B and C Preferred Stock then held, by
such Major Investor bears to the total number of shares of Common Stock of the
Company then outstanding (assuming full conversion and exercise of all
convertible or exercisable securities outstanding) as of the date of the Notice.

                                       14
<PAGE>

          (c) If all Shares which the Major Investors are entitled to obtain
pursuant to Section 2.4(b) above are not elected to be obtained as provided
herein, the Company shall promptly following the expiration of the period
provided in such Section 2.4(b), deliver to each Major Investor who has elected
to purchase its full initial portion in accordance with Section 2.4(b) (a "Fully
Exercising Investor"), a written Notice of Unsubscribed Shares, which shall
specify the number of unsubscribed Shares remaining after application of Section
2.4(b). A Fully Exercising Investor may, during the ten calendar day period
after receipt of the Notice of Unsubscribed Shares, elect to purchase any such
unsubscribed Shares, up to each such Fully Exercising Investor's pro rata
portion, or such other proportion of all or any part of the unsubscribed Shares
as all Fully Exercising Investors may mutually agree upon.  A Fully Exercising
Investor's pro rata portion shall be equal to (i) the proportion that the number
of shares of Common Stock issued, or issuable upon conversion of Series A, B and
C Preferred Stock or upon exercise of the Warrant and conversion of the shares
of Series C Preferred Stock purchasable thereunder, then held by such Fully
Exercising Investor bears to (ii) the total number of shares of such stock then
held by all Fully Exercising Investors who wish to purchase some of the
unsubscribed Shares.

          (d) If all Shares referred to in the Notice are not elected to be
obtained as provided in subsections 2.4(b) and 2.4(c) hereof, the Company may,
during the 60-day period following the expiration of the period provided in
subsection 2.4(c) hereof, offer the remaining unsubscribed portion of such
Shares to any person or persons at a price not less than, and upon terms no more
favorable to the offeree than those specified in the Notice. If the Company does
not enter into an agreement for the sale of the Shares within such period, or if
such agreement is not consummated within 60 days of the execution thereof, the
right provided hereunder shall be deemed to be revived and such Shares shall not
be offered unless first reoffered to the Major Investors in accordance herewith.

          (e) The right of first offer in this Section 2.4 shall not be
applicable (i) to the issuance or sale of Common Stock (or options therefor) to
employees, consultants or directors of the Company directly or pursuant to a
stock option plan, restricted stock plan or similar benefit program or agreement
approved by the Board of Directors of the Company or by the Compensation
Committee thereof, (ii) to or after a Qualifying IPO, (iii) upon the exercise of
warrants or options, or upon the conversion of convertible securities,
outstanding on the date hereof or as to which the Major Investors have been
previously offered the right to participate as contemplated by this Section 2.4,
(iv) to the issuance of securities in connection with a bona fide business
acquisition by the Company, whether by merger, consolidation, sale of assets,
sale or exchange of stock or otherwise, (v) to the issuance of stock, warrants
or other securities or rights to persons or entities with which the Company has
business relationships provided such issuances are for other than primarily
equity financing, (vi) to the issuance of capital stock (or warrants therefor)
to a lending or leasing institution in connection with a debt or lease
financing, (vii) in connection with a stock split or dividend, or a
recapitalization or reorganization of the Company, (ix) securities issued in a
transaction registered under the Act (x) to the shares of Series A, B or C
Preferred Stock purchased pursuant to the Series A Purchase Agreement, the
Series B Purchase Agreement or the Series C Purchase Agreement or to the shares
of capital stock of the Company into which such shares of Preferred Stock may be
converted or (xi) upon a Qualifying Acquisition.

                                       15
<PAGE>

          2.5  Proprietary Information Agreements.  The Company agrees to use
               ----------------------------------
its best efforts to cause each officer and employee of the Company and its
subsidiaries to enter into, and maintain in effect, a proprietary information
and inventions agreement in a form that has been approved by the Investors.

          2.6  Key Man Life Insurance.  The Company shall maintain in full force
               ----------------------
and effect term life insurance in favor of the Company on the life of each of
Ross Dove and Kirk Dove in a coverage amount not less than $2 million in each
case, unless otherwise approved by the Company's Board of Directors.

          2.7  SBA Requirements.  The Company will promptly furnish to any
               ----------------
Investor, upon request from such Investor, all forms that may be required to be
filed with the Small Business Administration ("SBA") from time to time with
respect to the transactions contemplated by this Agreement and such Investor's
ownership of the Series A or B Preferred Stock, and will provide to such
Investor and the SBA such other information and forms as such Investor may
reasonably request or the SBA may from time to time request with respect to the
transactions contemplated by this Agreement and such Investor's ownership of
such shares.  The Company has not and will not directly or indirectly use the
proceeds from the issuance and sale of the shares of Series A Preferred Stock
pursuant to the Series A Purchase Agreement or the Series B Preferred Stock
pursuant to the Series B Purchase Agreement for any purpose for which a small
business investment company is prohibited from providing funds under 13 C.F.R.
(S)107.901.

          2.8  Termination of Certain Covenants.  The covenants set forth in
               --------------------------------
Sections 2.5 through 2.7 shall terminate and be of no further force or effect
immediately prior to the first closing of a Qualifying IPO or upon a Qualifying
Acquisition.

     3.   Miscellaneous.
          -------------

          3.1  Successors and Assigns.  Except as otherwise provided herein, the
               ----------------------
terms and conditions of this Agreement shall inure to the benefit of, and be
binding upon, the respective successors and assigns of the parties (including
transferees of any shares of Registrable Securities). Nothing in this Agreement,
express or implied, is intended to confer upon any party other than the parties
hereto or their respective successors and assigns any rights, remedies,
obligations, or liabilities under or by reason of this Agreement, except as
expressly provided in this Agreement.

          3.2  Governing Law.  This Agreement shall be governed by and construed
               -------------
under the laws of the State of California as applied to agreements among
California residents entered into and to be performed entirely within
California.

          3.3  Titles and Subtitles.  The titles and subtitles used in this
               --------------------
Agreement are used for convenience only and are not to be considered in
construing or interpreting this Agreement.

          3.4  Notices.  All notices, requests, consents and other
               -------
communications required or permitted hereunder shall be in writing and shall be
deemed to have been given for all purposes upon (i) personal delivery, (ii) one
day after being sent, when sent by professional

                                       16
<PAGE>

overnight courier service from and to locations within the United States, (iii)
five days after posting when sent by registered or certified mail, or (iv) on
the date of transmission when sent by facsimile and when receipt has been
confirmed, addressed (A) if to the Company at the address or facsimile number,
as applicable, set forth on the signature pages hereto; or (B) if to any
Investor, at the address or facsimile number, as applicable, as shown on the
stock register maintained by the Company. Any party hereto may from time to time
by notice in writing to the other parties as provided herein, designate a
different mailing address or a different person to which such notices or demands
are thereafter to be addressed or delivered.

          3.5  Expenses.  If any action at law or in equity is necessary to
               --------
enforce or interpret the terms of this Agreement, the prevailing party shall be
entitled to reasonable attorneys' fees, costs and necessary disbursements in
addition to any other relief to which such party may be entitled.

          3.6  Amendments and Waivers.   Any term of this Agreement may be
               ----------------------
amended and the observance of any term of this Agreement may be waived (either
generally or in a particular instance and either retroactively or
prospectively), only with the written consent of the Company and the Holders of
a majority of the Registrable Securities then outstanding.  Any amendment or
waiver effected in accordance with this paragraph shall be binding on each
Holder of any Registrable Securities then outstanding, each future holder of all
such Registrable Securities, and the Company.

          3.7  Severability.  If one or more provisions of this Agreement are
               ------------
held to be unenforceable under applicable law, such provision shall be excluded
from this Agreement and the balance of the Agreement shall be interpreted as if
such provision were so excluded and shall be enforceable in accordance with its
terms.

          3.8  Aggregation of Stock.  All shares of Registrable Securities held
               --------------------
or acquired by affiliated entities or persons, including, in each case, general
or limited partners or members of such person, shall be aggregated together for
the purpose of determining the availability of any rights under this Agreement.

          3.9  Entire Agreement.  This Agreement (including the Exhibits hereto,
               ----------------
if any) constitutes the full and entire understanding and agreement between the
parties with regard to the subjects hereof and thereof and supersedes all prior
agreements or understandings between or among any of the parties hereto with
respect to the subject matter hereof, including the Prior Agreement.

          3.10 Counterparts.  This Agreement may be executed in two or more
               ------------
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

                           [Signature Pages Follow]

                                       17
<PAGE>

  In Witness Whereof, the parties have executed this Agreement as of the date
first above written.

                              DOVEBID, INC.

                              By: /s/ Jeff Crowe
                                 ----------------------------------------
                              Its: President
                              Address: 1241 East Hillsdale Blvd.
                                       Foster City, CA 94404
                                       Facsimile No.: (650) 571-5980
                                       Attention: Chief Executive Officer

INVESTORS:                    BAIN & COMPANY, INC.
----------

                              By: /s/
                                 ----------------------------------------
                              Its: Vice President

                              COMDISCO, INC.

                              By: /s/
                                 ----------------------------------------
                              Title:
                                    -------------------------------------

                              FREMONT VENTURES I, L.P.
                              a Delaware limited partnership
                              By: FV, L.P., its General Partner
                              By: Fremont Resources, Inc.
                                   its General Partner

                              By: /s/
                                 ----------------------------------------
                              Its: Vice President

                              F&W INVESTMENTS 2000

                              By: /s/
                                 ----------------------------------------
                              It's: General Partner

                                       18

<PAGE>

                    MAYFIELD X, L.P.
                    By:   Mayfield X Management, L.L.C.
                    Its:  General Partner

                    By: /s/ A. Grant Heidrich
                       ------------------------------------
                    Its:  Managing Director

                    MAYFIELD ASSOCIATES FUND V, L.P.
                    By:   Mayfield X Management, L.L.C.
                    Its:  General Partner

                    By: /s/ A. Grant Heidrich
                       ------------------------------------
                    Its:  Managing Director

                    MAYFIELD PRINCIPALS FUND, L.L.C.
                    By:   Mayfield X Management, L.L.C.
                       ------------------------------------
                    Its:  Managing Member

                    By: /s/ A. Grant Heidrich
                       ------------------------------------
                    Its:  Managing Director

                    SOFTBANK CAPITAL PARTNERS LP
                    a Delaware limited partnership
                    By: SOFTBANK Capital Partners LLC
                    its General Partner

                    By: /s/
                       ------------------------------------
                    Its: Admin. Member

                    SOFTBANK CAPITAL ADVISORS FUND LP
                    a Delaware limited partnership
                    By: SOFTBANK Capital Partners LLC
                    its General Partner

                    By: /s/
                       ------------------------------------
                    Its: Admin. Member

                    SUN MICROSYSTEMS, INC.

                    By: /s/
                       ------------------------------------
                    Its:

                                       19
<PAGE>

                    TPG PARTNERS III, L.P.
                    By: TPG GenPar III, L.P.
                    By: TPG Advisors III, Inc.

                    By: /s/ Richard Ekleberry
                       ------------------------------------
                    Title: Vice President
                          ---------------------------------

                    TPG PARALLEL III, L.P.
                    By: TPG GenPar III, L.P.
                    By: TPG Advisors III, Inc.

                    By: /s/ Richard Ekleberry
                       ------------------------------------
                    Title: Vice President
                          ---------------------------------

                    TPG INVESTORS III, L.P.
                    By: TPG GenPar III, L.P.
                    By: TPG Advisors III, Inc.

                    By: /s/ Richard Ekleberry
                       ------------------------------------
                    Title: Vice President
                          ---------------------------------

                    T/3/ PARTNERS, L.P.

                    By: T/3/ GenPar, L.P.
                    By: T/3/ Advisors, Inc.

                    By: /s/ Richard Ekleberry
                       ------------------------------------
                    Title: Vice President
                          ---------------------------------

                    T/3/ PARALLEL, L.P.
                    By: T/3/ GenPar, L.P.
                    By: T/3/ Advisors, Inc.

                    By: /s/ Richard Ekleberry
                       ------------------------------------
                    Title: Vice President
                          ---------------------------------

                                       20
<PAGE>

                    T/3/ INVESTORS, L.P.
                    By: T/3/ GenPar, L.P.
                    By: T/3/ Advisors, Inc.

                    By: /s/ Richard Ekleberry
                       ------------------------------------
                    Title: Vice President
                          ---------------------------------

                    FOF PARTNERS III, L.P.
                    By: TPG GenPar III, L.P.
                    By: TPG Advisors III, Inc.

                    By: /s/ Richard Ekleberry
                       ------------------------------------
                    Title: Vice President
                          ---------------------------------

                    FOF PARTNERS III-B, L.P.
                    By: TPG GenPar III, L.P.
                    By: TPG Advisors III, Inc.

                    By: /s/ Richard Ekleberry
                       ------------------------------------
                    Title: Vice President
                          ---------------------------------

                    TPG DUTCH PARALLEL III, C.V.
                    By: TPG GenPar III, L.P.
                    By: TPG Advisors III, Inc.

                    By: /s/ Richard Ekleberry
                       ------------------------------------
                    Title: Vice President
                          ---------------------------------

                    T/3/ DUTCH PARALLEL, C.V.
                    By: T/3/ GenPar, L.P.
                    By: T/3/ Advisors, Inc.

                    By: /s/ Richard Ekleberry
                       ------------------------------------
                    Title: Vice President
                          ---------------------------------

                                       21
<PAGE>

                    T.H. eVENTURE PTE LTD

                    By: /s/
                       ------------------------------------
                    Its:

                    YAHOO! INC.

                    By: /s/
                       ------------------------------------
                    Its:

                    DATA STREAM SYSTEMS, INC.

                    By: /s/
                       ------------------------------------
                    Its:

                                       22
<PAGE>

                                  SCHEDULE A
                                  ----------

                                   INVESTORS

                              Bain & Company, Inc.

                              Comdisco, Inc.

                              Data Stream Systems, Inc.

                              Fremont Ventures I, L.P.

                              F&W Investments 2000

                              Mayfield Associates Fund V, L.P.

                              Mayfield X, L.P.

                              Mayfield Principals Fund, L.L.C.

                              SOFTBANK Capital Partners LP

                              SOFTBANK Capital Advisors Fund LP

                              Sun Microsystems, Inc.

                              TPG Partners III, L.P.

                              TPG Parallel III, L.P.

                              TPG Investors III, L.P.

                              T/3/ Partners, L.P.

                              T/3/ Parallel, L.P.

                              T/3/ Investors, L.P.

                              FOF Partners III, L.P.

                              FOF Partners III-B, L.P.

                              TPG Dutch Parallel III, C.V.

                              T/3/ Dutch Parallel, C.V.

                              T.H. eVenture PTE LTD

                              Yahoo! Inc.

                                       23<PAGE>

                                                                   EXHIBIT 10.15

          NEITHER THIS NOTE NOR ANY SECURITIES WHICH MAY BE ISSUED UPON
CONVERSION HEREOF HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, 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 SAID ACT AND REGISTRATION
OR OTHER QUALIFICATION UNDER ANY APPLICABLE STATE SECURITIES LAWS, OR AN OPINION
OF COUNSEL SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION OR OTHER
QUALIFICATION IS NOT REQUIRED.

                                 DOVEBID, INC.
                                 -------------

                   CONVERTIBLE SUBORDINATED PROMISSORY NOTE
                   ----------------------------------------

$1,000,000                                                     December 30,1999

          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 Unidyne International, Inc. ("Payee") at such address as
Payee may designate, One Million Dollars and No Cents ($1,000,000.00), plus
simple interest thereon calculated from the date hereof until paid at the annual
rate of 5.74%, compounded annually.  Principal and accrued interest will be due
and payable in lawful money of the United States in full on December 30, 2002
(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:

          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.
<PAGE>

               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 or Form SB-1
(or similar successor form) under the Securities Act of 1933, as amended, 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 concurrent with the
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 (7) days after it files with the
Securities and Exchange Commission any registration statement on Form S-1, SB-1
or a similar successor form for an Initial Public Offering, and (ii) reasonably
promptly following the 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 closing of an Initial Public
Offering, the conversion shall be deemed to have occurred either immediately
prior to contemporaneously with the 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, 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 specified in Section 2.5 below shall apply to
the Conversion Stock.  This Note shall not be convertible and shall not be
converted into Conversion Stock if there is not an Initial Public Offering
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
<PAGE>

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  Restriction on Sale.  Upon and following any conversion pursuant
               -------------------
to this Section 2, no holder of any Conversion Stock shall effect any sale or
distribution of any of the Conversion Stock (which shall include any and all
voting securities received by such holder as or in connection with a stock
dividend, stock split or other recapitalization or similar distribution on or in
respect of the Conversion Stock) or any of the Company's other equity
securities, or of any securities convertible into or exchangeable for such
securities, during the period beginning on the closing of the Initial Public
Offering and ending 180 days after such closing.  The certificate(s)
representing the shares of Conversion Stock issued upon the conversion of this
Note shall be legended to reflect such restriction on sale.

          2.6  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.

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

     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; provided that (i) the Company must give the Noteholder at least ten
(10) days prior written notice of its intention to prepay, and (ii) prepayment
cannot take place (x) after the Company has filed with the Securities and
Exchange Commission a registration statement on Form S-1, SB-1 or a similar
successor form for an Initial Public Offering and for so long as any such
registration statement remains pending, or (y) during the 60 days prior to the
Company's filing of a registration
<PAGE>

statement with the Securities and Exchange Commission on Form S-1, SB-1 or a
similar successor form for an Initial Public Offering.

     5.   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 5 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.

     6.   General Provisions.
          ------------------

          6.1  Notices.  Any notice, request or other communication required or
               -------
permitted hereunder shall be in writing and shall be deemed to have been duly
given if personally delivered or mailed by certified mail return receipt
requested, postage prepaid, at the respective addresses of the parties.  Notice
shall conclusively be deemed to have been given when personally delivered or
when deposited in the mail in the manner set forth above.

          6.2  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 for
convenience only and shall not be used to construe or interpret this Note.

          6.3  Noteholder Representations and Status.  By accepting this Note,
               -------------------------------------
the Payee and any other Noteholder each acknowledges, represents and warrants
that (i) this Note is being acquired for investment, solely for its own account
and not as a nominee for any other person or entity, and that it will not offer,
sell or otherwise dispose of this Note except as expressly permitted by this
Note and under circumstances which will not result in a violation of the
Securities Act of 1933, as amended (the "Securities Act"), and (ii) it is an
"accredited investor" with the meaning of Rule 501(a) of Regulation D
promulgated under the Securities Act.

          6.4  Assignment.  Except as provided in the next sentence, neither
               ----------
this Note nor any right hereunder may be assigned by the Noteholder without the
prior written consent of the Company, which may be granted or withheld in the
Company's sole discretion.

          6.5  Entire Agreement; Changes.  This Note, and the Subscription and
               -------------------------
Loan Agreement executed by the holder in connection with the issuance of this
Note, contains the entire agreement between the parties hereto superseding and
replacing any prior agreement or understanding relating to the subject matter
hereof.  Neither this Note nor any term hereof may be changed, waived,
discharged or terminated orally but only by an instrument in writing signed
<PAGE>

by the party against which enforcement of the change, waiver, discharge or
termination is sought.

          6.6  Law Governing.  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 law.

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

                                 DOVEBID, INC.

                                 By: /s/ Anthony Capobianco
                                    -------------------------------------

                                 Its     General Counsel
                                    -------------------------------------

                                 UNIDYNE INTERNATIONAL, INC.

                                 By: /s/ Jack L. Saggau
                                    -------------------------------------

                                 Its:    Vice President
                                     ------------------------------------

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