Document:

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                                                                  EXHIBIT 4.20

                                                               Warrant No._____

              ELECTRONICS ACCESSORY SPECIALISTS INTERNATIONAL, INC.
                           d/b/a Mobility Electronics
                            (A Delaware corporation)

                               WARRANT TO PURCHASE
                             SHARES OF COMMON STOCK

NEITHER THIS WARRANT NOR THE SHARES ISSUABLE UPON ITS EXERCISE HAVE BEEN
REGISTERED UNDER EITHER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
ACT"), OR THE SECURITIES LAWS OF ANY STATE AND MAY NOT BE SOLD, OFFERED FOR
SALE, TRANSFERRED, ASSIGNED, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN
EFFECTIVE REGISTRATION STATEMENT WITH RESPECT TO THE SECURITIES UNDER THE
SECURITIES ACT AND ANY APPLICABLE STATE SECURITIES LAWS OR AN OPINION OF COUNSEL
SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED.

         THIS CERTIFIES THAT, for value received,      or registered assigns
(hereinafter, the "Holder"), is entitled to purchase, subject to the conditions
set forth below, at any time or from time to time during the Exercise Period (as
defined in subsection 1.2, below),       shares ("Shares") of fully paid and
non-assessable common stock, par value $0.01 per share ("Common Stock"), of
ELECTRONICS ACCESSORY SPECIALISTS INTERNATIONAL, INC., a Delaware corporation
(the "Company"), at the per share purchase price (the "Warrant Price") set forth
in subsection 1.1, subject to the further provisions of this Warrant. The term
"Warrants" as used herein shall mean this Warrant and all instruments issued by
the Company which are substantially identical to this Warrant (except for the
name of the Holder and the number of securities purchasable by the Holder).

1.       EXERCISE OF WARRANT

         The terms and conditions upon which this Warrant may be exercised, and
the Common Stock covered hereby may be purchased, are as follows:

         1.1 Warrant Price. The Warrant Price shall be Seven Dollars ($7.00) per
Share, subject to adjustment as provided in Section 4 below.

         1.2 Method Of Exercise. The Holder of this Warrant may, at any time
prior to the earlier of (i) September 30,2001, (ii) eighteen months after the
time that the Company becomes subject to the reporting requirements of the
Exchange Act of 1934, as amended or (ii) the consummation of a

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Sales Transaction (as hereinafter defined) ("the Exercise Period"), exercise in
whole or in part the purchase rights evidenced by this Warrant. Such exercise
shall be effected by:

                  (a) the surrender of the Warrant, together with a duly
         executed copy of the form of subscription attached hereto, to the
         Secretary of the Company at its principal offices;

                  (b) the payment to the Company, by certified check or bank
         draft payable to its order, of an amount equal to the aggregate Warrant
         Price for the number of Shares for which the purchase rights hereunder
         are being exercised; and

                  (c) the delivery to the Company, if necessary to assure
         compliance with federal and state securities laws, of an instrument
         executed by the Holder certifying that the Shares are being acquired
         for the sole account of the Holder and not with a view to any resale or
         distribution.

         As used herein "Sales Transaction" means: (i) the consolidation or
merger of the Company with or into any other corporation or business entity
(other than a consolidation or merger effected to change the state of
incorporation of the Company or effected with a principal purpose of causing the
exercise of the Warrants or the termination of the Exercise Period), (ii) the
sale or other transfer in a single transaction or a series of related
transactions of all or substantially all of the assets of the Company, or (iii)
the liquidation, dissolution, winding-up or reorganization of the Company.

         Notwithstanding the foregoing provisions requiring payment by check,
the Holder may from time to time at the Holder's option pay such Purchase Price
or any portion thereof by surrendering to the Company in lieu of such payment,
the right of such Holder to receive a number of shares of Common Stock having an
aggregate Market Value (as herein defined) equal to such Purchase Price (or
portion thereof) on the date of exercise (a "Cashless Exercise"). For purposes
of the foregoing, the term "Market Value" of a share of Common Stock as of a
relevant date means the closing price on the trading day preceding such date
with respect to the Common Stock on a national securities exchange, the Nasdaq
National Market or the Nasdaq Small-Cap Market. The closing price shall be (i)
the last sale price of shares of the Common Stock on such trading day or, if no
such sale takes place on such date, the average of the closing bid and asked
prices thereof on such date, in each case as officially reported on the
principal national securities exchange, the Nasdaq National Market or the Nasdaq
Small-Cap Market on which the Common Stock is then listed or admitted to
trading; or (ii) if no shares of Common Stock are then listed or admitted to
trading on any national securities exchange, the Nasdaq National Market or the
Nasdaq Small-Cap Market, the average of the reported closing bid and asked
prices thereof on such date in the over-the-counter market as shown on the
National Association of Securities Dealers automated quotation system. The
foregoing option of the Holder shall be of no force or effect unless the Common
Stock is then listed, admitted to trading, or reported.

         1.3 Satisfaction with Requirements of Securities Act of 1933.
Notwithstanding the provisions of subsection 1.2(c) and Section 7, each and
every exercise of this Warrant is contingent upon the Company's satisfaction
that the issuance of Common Stock upon the exercise is exempt

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from the requirements of the Securities Act of 1933, as amended (the "Securities
Act") and all applicable state securities laws. The Holder of this Warrant
agrees to execute any and all documents determined necessary by the Company's
counsel to effect the exercise of this Warrant.

         1.4 Issuance Of Shares and New Warrant. In the event the purchase
rights evidenced by this Warrant are exercised in whole or in part, one or more
certificates for the purchased Shares shall be issued as soon as practicable
thereafter to the person exercising such rights. Such Holder shall also be
issued at such time a new Warrant representing the number of Shares (if any) for
which the purchase rights under this Warrant remain unexercised and continuing
in force and effect.

2.       TRANSFERS

         2.1 Transfers. Subject to Sections 1.2 and 7 hereof, this Warrant and
all rights hereunder are transferable in whole or in part by the Holder. The
transfer shall be recorded on the books of the Company upon the surrender of
this Warrant, properly endorsed, to the Secretary of the Company at its
principal offices and the payment to the Company of all transfer taxes and other
governmental charges imposed on such transfer. In the event of a partial
transfer, the Company shall issue to the several Holders one or more appropriate
new Warrants.

         2.2 Registered Holder. Each Holder agrees that until such time as any
transfer pursuant to subsection 2.1 is recorded on the books of the Company, the
Company may treat the registered Holder of this Warrant as the absolute owner;
provided that nothing herein affects any requirement that transfer of any
Warrant or share of Common Stock issued or issuable upon the exercise thereof by
subject to securities law compliance.

         2.3 Form Of New Warrants. All Warrants issued in connection with
transfers of this Warrant shall bear the same date as this Warrant and shall be
substantially identical in form and provision to this Warrant, with the possible
exception of the number of Shares purchasable thereunder.

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3.       FRACTIONAL SHARES

         Notwithstanding that the number of Shares purchasable upon the exercise
of this Warrant may have been adjusted pursuant to the terms hereof, the Company
shall nonetheless not be required, to issue fractions of Shares upon exercise of
this Warrant or to distribute certificates that evidence fractional shares nor
shall the Company be required to make any cash payments in lieu thereof upon
exercise of this Warrant. Holder hereby waives any right to receive fractional
Shares. If a fractional Share shall result from adjustments in the number of
Shares purchasable hereunder, the number of Shares purchasable hereunder shall,
on an aggregate basis taking into account all adjustments hereunder from the
date of issuance of this Warrant, be rounded up to the next whole number.

4.       ANTIDILUTION PROVISIONS

         The provisions of this Section 4 shall apply in the event that any of
the events described in this Section 4 shall occur with respect to the Common
Stock of the Company at any time on or after the original issuance date of this
Warrant.

         4.1 Stock Splits And Combinations. If the Company shall at any time
subdivide or combine its outstanding shares of Common Stock, this Warrant shall,
after that subdivision or combination, evidence the right to purchase the number
of shares of Common Stock that would have been issuable as a result of that
change with respect to the Shares which were purchasable under this Warrant
immediately before that subdivision or combination. If the Company shall at any
time subdivide the outstanding shares of Common Stock, the Warrant Price then in
effect immediately before that subdivision shall be proportionately decreased,
and, if the Company shall at any time combine the outstanding shares of Common
Stock, the Warrant Price then in effect immediately before that combination
shall be proportionately increased. Any adjustment under this Section shall
become effective at the time that such subdivision or combination becomes
effective.

         4.2 Reclassification, Exchange and Substitution. If the Common Stock
issuable upon exercise of this Warrant shall be changed into the same or a
different number of shares of any other class or classes of stock, whether by
capital reorganization, reclassification, or otherwise (other than a subdivision
or combination of shares provided for above), the Holder of this Warrant shall,
on its exercise, be entitled to purchase for the same aggregate consideration,
in lieu of the Common Stock which the Holder would have become entitled to
purchase but for such change, the number of shares of such other class or
classes of stock equivalent to the number of shares of Common Stock that would
have been subject to purchase by the Holder on exercise of this Warrant
immediately before that change.

         4.3 Reorganizations, Mergers, Consolidations Or Sale Of Assets. If at
any time there shall be a capital reorganization of the Common Stock (other than
a combination, reclassification, exchange, or subdivision of shares provided for
elsewhere above) then, as a part of such reorganization, lawful provision shall
be made so that the Holder of this Warrant shall thereafter be entitled to
receive upon exercise of this Warrant, during the period specified in this
Warrant and upon payment of the Warrant Price then in effect, the number of
shares of Common Stock or other securities or property of the Company, to which
a holder of the Common Stock deliverable upon
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exercise of this Warrant would have been entitled in such capital
reorganization, if this Warrant had been exercised immediately before that
capital reorganization. In any such case, appropriate adjustment (as determined
in good faith by the Company's Board of Directors) shall be made in the
application of the provisions of this Warrant with respect to the rights and
interests of the Holder of this Warrant after the reorganization to the end that
the provisions of this Warrant (including adjustment of the Warrant Price then
in effect and number of Shares purchasable upon exercise of this Warrant) shall
be applicable after that event, as near as reasonably may be, in relation to any
shares or other property deliverable after that event upon exercise of this
Warrant. The Company shall, within thirty (30) days after making such
adjustment, give written notice (by first class mail, postage prepaid) to the
registered Holder of this Warrant at the address of that Holder shown on the
Company's books. That notice shall set forth, in reasonable detail, the event
requiring the adjustment and the method by which the adjustment was calculated
and specify the Warrant Price then in effect after the adjustment and the
increased or decreased number of Shares purchasable upon exercise of this
Warrant. When appropriate, that notice may be given in advance and include as
part of the notice required under other provisions of this Warrant.

         4.4 Common Stock Dividends; Distributions. In the event the Company
should at any time prior to the expiration of this Warrant fix a record date for
the determination of the holders of Common Stock entitled to receive a dividend
or other distribution payable in additional shares of Common Stock or other
securities or rights convertible into or entitling the holder thereof to
receive, directly or indirectly, additional shares of Common Stock (hereinafter
referred to as the "Common Stock Equivalents") without payment of any
consideration by such holder for the additional shares of Common Stock or Common
Stock Equivalents (including the additional shares of Common Stock issuable upon
conversion or exercise thereof), then, as of such record date (or the date of
such distribution, split or subdivision if no record date is fixed), the Warrant
Price shall be appropriately decreased and the number of shares of Common Stock
issuable upon exercise of the Warrant shall be appropriately increased in
proportion to such increase of outstanding shares.

         4.5 Adjustments of Other Distributions. In the event the Company shall
declare a distribution payable in securities of other persons, evidences of
indebtedness issued by the Company or other persons, assets (excluding cash
dividends) or options or rights not referred to in subsection 4.4, then, in each
such case for the purpose of this subsection 4.5, upon exercise of this Warrant
the Holder hereof shall be entitled to a proportionate share of any such
distribution as though such Holder was the holder of the number of shares of
Common Stock into which this Warrant may be exercised as of the record date
fixed for the determination of the holders of Common Stock of the Company
entitled to receive such distribution.

         4.6 Certificate as to Adjustments. In the case of each adjustment or
readjustment of the Warrant Price pursuant to this Section 4, the Company will
promptly compute such adjustment or readjustment in accordance with the terms
hereof and cause a certificate setting forth such adjustment or readjustment and
showing in detail the facts upon which such adjustment or readjustment is based,
to be delivered to the Holder of this Warrant. The Company will, upon the
written request at any time of the Holder of this Warrant, furnish or cause to
be furnished to such Holder a certificate setting forth:

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                  (a)      Such adjustments and readjustments;

                  (b)      The purchase price at the time in effect; and

                  (c)      The number of shares of Common Stock issuable upon
                           exercise of the Warrant and the amount, if any, of
                           other property at the time receivable upon the
                           exercise of the Warrant.

         4.7 Reservation of Stock Issuable Upon Exercise. The Company shall at
all times reserve and keep available out of its authorized but unissued shares
of Common Stock solely for the purpose of effecting the exercise of this Warrant
such number of its shares of Common Stock as shall from time to time be
sufficient to effect the exercise of this Warrant and if at any time the number
of authorized but unissued shares of Common Stock shall not be sufficient to
effect the exercise of this Warrant, in addition to such other remedies as shall
be available to the Holder of this Warrant, the Company will use its best
efforts to take such corporate action as may, in the opinion of its counsel, be
necessary to increase its authorized but unissued shares of Common Stock to such
number of shares as shall be sufficient for such purposes.

5.       RIGHTS PRIOR TO EXERCISE OF WARRANT

         This Warrant does not entitle the Holder to any of the rights of a
stockholder of the Company, including without limitation, the right to receive
dividends of other distributions, to exercise any preemptive rights, to vote, or
to consent or to receive notice as a stockholder of the Company. If, however, at
any time prior to the expiration of this Warrant and prior to its exercise, any
of the following events shall occur:

                  (a) the Company shall declare any dividend payable in any
         securities upon its shares of Common Stock or make any distribution
         (other than a cash dividend) to the holders of its shares of Common
         Stock;

                  (b) the Company shall offer to all of the holders of its
         shares of Common Stock any additional shares of Common Stock or
         securities convertible into or exchangeable for shares of Common Stock
         or any right to subscribe for or purchase any thereof; or

                  (c) a dissolution, liquidation or winding up of the Company
         (other than in connection with a consolidation, merger, sale, transfer
         or lease of all or substantially all of its property, assets, and
         business as an entirety) shall be proposed and action by the Company
         with respect thereto has been approved by the Company's Board of
         Directors,

the Company shall give notice in writing of such event to the Holder at his last
address as it shall appear on the Company's records at least twenty (20) days'
prior to the date fixed as a record date or the date of closing the transfer
books for the determination of the stockholders entitled to such dividends,
distribution, or subscription rights, or for the determination of stockholders
entitled to

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vote on such proposed dissolution, liquidation or winding up. Such notice shall
specify such record date or the date of closing the transfer books, as the case
may be. Failure to publish, mail or receive such notice or any defect therein or
in the publication or mailing thereof shall not affect the validity of any
action taken in connection with such dividend, distribution or subscription
rights, or such proposed dissolution, liquidation or winding up. Each person in
whose name any certificate for Shares is to be issued shall for all purposes be
deemed to have become the holder of record of such Shares on the date on which
this instrument was surrendered and payment of the Warrant Price was made,
irrespective of the date of delivery of such stock certificate, except that, if
the date of such surrender and payment is a date when the stock transfer books
of the Company are closed, such person shall be deemed to have become the holder
of such Shares at the close of business on the next succeeding date on which the
stock transfer books are open.

6.       SUCCESSORS AND ASSIGNS

         The terms and provisions of this Warrant shall inure to the benefit of,
         and be binding upon, the Company and the holder thereof and their
         respective successors and permitted assigns.

7.       RESTRICTED SECURITIES

         In order to enable the Company to comply with the Securities Act and
         applicable state laws, the Company may require the Holder as a
         condition of the transfer or exercise of this Warrant, to give written
         assurance satisfactory to the Company that the Warrant, or in the case
         of an exercise hereof the Shares subject to this Warrant, are being
         acquired for his or her own account, for investment only, with no view
         to the distribution of the same, and that any disposition of all or any
         portion of this Warrant or the Shares issuable upon the due exercise of
         this Warrant shall not be made, unless and until:

                           (a) There is then in effect a registration statement
                  under the Securities Act covering such proposed disposition
                  and such disposition is made in accordance with such
                  registration statement; or

                           (b) (i) The Holder has notified the Company of the
                  proposed disposition and shall have furnished the Company with
                  a detailed statement of the circumstances surrounding the
                  proposed disposition, and (ii) the Holder has furnished the
                  Company with an opinion of counsel, reasonably satisfactory to
                  the Company, that such disposition will not require
                  registration of such securities under the Securities Act and
                  applicable state law.

         Any transferee of this Warrant, by its acceptance thereof, agrees to be
         bound by the terms of this Warrant with the same force and effect as if
         a signatory thereto.

         The Holder acknowledges that this Warrant is, and each of the shares of
         Common Stock issuable upon the due exercise hereof will be, a
         restricted security, that he understands the provisions of Rule 144 of
         the Securities and Exchange Commission, and that the certificate

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         or certificates evidencing such shares of Common Stock will bear a
         legend substantially similar to the following:

              "THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
              REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR UNDER
              THE SECURITIES LAWS OF ANY STATE, AND MAY NOT BE OFFERED FOR SALE,
              SOLD, TRANSFERRED, ASSIGNED, PLEDGED, HYPOTHECATED, OR OTHERWISE
              DISPOSED OF IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT
              COVERING THESE SECURITIES UNDER THE SECURITIES ACT AND APPLICABLE
              STATE SECURITIES LAWS, OR AN OPINION OF COUNSEL SATISFACTORY TO
              THE COMPANY THAT REGISTRATION IS NOT REQUIRED THEREUNDER."

8.       LOSS OR MUTILATION

         Upon receipt by the Company of satisfactory evidence of the ownership
    of and the loss, theft, destruction, or mutilation of any Warrant, and (i)
    in the case of loss, theft, or destruction, upon receipt by the Company of
    indemnity satisfactory to it, or (ii) in the case of mutilation, upon
    receipt of such Warrant and upon surrender and cancellation of such Warrant,
    the Company shall execute and deliver in lieu thereof a new Warrant
    representing the right to purchase an equal number of shares of Common
    Stock.

    9.   NOTICES

         All notices, requests, demands and other communications under this
    Warrant shall be in writing and shall be deemed to have been duly given on
    the date of service if served personally on the party to whom notice is to
    be given, or on the date of mailing if mailed to the party to whom notice is
    to be given, by first class mail, registered or certified, postage prepaid,
    and properly addressed as follows: if to the Holder, at his address as shown
    in the Company records; and if to the Company, at its principal office. Any
    party may change its address for purposes of this Section by giving the
    other party written notice of the new address in the manner set forth above.

    10.  GOVERNING LAW

         This Warrant and any dispute, disagreement or issue of construction of
    interpretation arising hereunder whether relating to its execution, its
    validity, the obligations provided herein or performance shall be governed
    or interpreted according to the internal laws of the State of Delaware
    without regard to conflicts of law.

         DATED: ____________, 1997.

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                             ELECTRONICS ACCESSORY
                             SPECIALISTS INTERNATIONAL, INC.

                             --------------------------------------------------
                             Charles R. Mollo, President

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                                  SUBSCRIPTION

ELECTRONICS ACCESSORY SPECIALISTS
INTERNATIONAL, INC.
Attn: President
7955 East Redfield Road
Scottsdale, Arizona 85260

Ladies and Gentlemen:

The undersigned, ________________________________________________, hereby elects
to purchase, pursuant to the provisions of the foregoing Warrant held by the
undersigned,____________________ shares (the "Shares") of the Common Stock, par
value $0.01 per share ("Common Stock"), of Electronics Accessory Specialists
International, Inc, a Delaware corporation.

Payment of the purchase price for the Shares required under such Warrant
accompanies this subscription.

The undersigned hereby represents and warrants that the undersigned is acquiring
the Shares for the account of the undersigned and not for resale or with a view
to distribution of such Shares or any part hereof; that the undersigned is
fully aware of the transfer restrictions affecting restricted securities under
the pertinent securities laws and the undersigned understands that the Shares
purchased hereby are restricted securities and that the certificate or
certificates evidencing the same will bear a legend to that effect.

DATED:                  .
       -----------------

                                    Signature:
                                                -------------------------------

                                    Printed:
                                                -------------------------------

                                    Address:
                                                -------------------------------<PAGE>   1
                                                                    EXHIBIT 4.21

                                    EXHIBIT A

THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
(THE "ACT"), OR UNDER ANY STATE SECURITIES LAW OF ANY STATE OR OTHER
JURISDICTION AND MAY NOT BE SOLD, ASSIGNED, PLEDGED, HYPOTHECATED OR OTHERWISE
TRANSFERRED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT FOR THIS NOTE
UNDER THE ACT AND APPLICABLE SECURITIES LAWS OF ANY STATE OR OTHER JURISDICTION,
OR AN OPINION OF COUNSEL SATISFACTORY TO MAKER THAT SUCH REGISTRATION IS NOT
REQUIRED.

                           MOBILITY ELECTRONICS, INC.

                           13% BRIDGE PROMISSORY NOTE

                                  NO. BN - ____

$____________                                                _____________,1999

     FOR VALUE RECEIVED, the undersigned, Mobility Electronics, Inc., a Delaware
corporation ("Maker"), hereby promises to pay to the order of
__________________________, or its successors or assigns ("Payee"), the
principal sum of ____________________ and No/100 Dollars ($_______________),
together with interest accrued thereon (calculated on the basis of a 365-day
year) at a rate of thirteen percent (13%) per annum from the date hereof until
the date that this Note is paid in full; provided, however, that such interest
rate shall increase to a rate of eighteen percent (18%) per annum upon the
occurrence, and during the continuation, of an Event of Default (as defined
below). All payments on this Note shall be due and payable in lawful money of
the United States of America.

     This Note is one of a series of promissory notes of the Company styled "13%
Bridge Promissory Note" in the aggregate amount not to exceed $2,500,000 (plus
an over-allotment option not to exceed $500,000), which are being issued from
time to time between February 24, 1999 and March 5, 1999, subject to a one-week
extension at the option of Maker (collectively, the "Bridge Notes").

     1. Principal and Interest Payments. The principal of and interest on this
Note shall be due and payable on March 5, 2000. Maker agrees that any payments
of interest and/or principal on the Bridge Notes (including this Note) shall be
made pari passu with all Bridge Notes based on the principal balance and the
accrued but unpaid interest on all Bridge Notes at the time of such payment.

Mobility Electronics, Inc. 13% Bridge Promissory Note                    Page 1

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     2. Prepayments. Neither the unpaid principal balance of this Note nor any
accrued but unpaid interest thereon may be prepaid in whole or in part without
the prior written consent of Payee (and in any event, subject to Section 1
above).

     3. Method of Payment. All payments made under this Note, whether of
principal or interest, shall be made by Maker to the holder hereof on the date
specified or provided herein and shall be delivered by means of certified or
cashiers' check or wire transfer of immediately available funds to an account
specified by the holder hereof. Whenever payment hereunder shall be due on a day
which is not a Business Day (as hereinafter defined), the date for payment
thereof shall be extended to the next succeeding Business Day. If the date for
any payment is extended by operation of law or otherwise, interest thereon shall
be payable for such extended time. "Business Day" means every day which is not a
Saturday, Sunday or legal holiday.

     4. Subordination. Notwithstanding anything herein to the contrary, the
payment of principal of and interest on this Note shall be subordinate and
junior to the prior payment of the indebtedness of Maker: (a) owed to Sirrom
Capital Corporation and NationsBank, N.A., and their respective successors and
assigns (as such indebtedness may be renewed, deferred, extended, refunded,
amended or modified from time to time); and (b) hereafter created constituting
borrowed money from financial institutions or lenders approved by the Board of
Directors of Maker and designated in writing as being senior to this Note (but
only to the extent so designated (as such indebtedness may be renewed, deferred,
extended, refunded, amended or modified from time to time) (collectively, the
"Senior Indebtedness"). If any payment or distribution shall be received in
respect of this Note in contravention of the terms of this Section 4, such
payment or distribution shall be held in trust for the holders of the Senior
Indebtedness, and shall be immediately delivered to such holders in the same
form as received.

     5. Events of Default. The following shall constitute events of default
("Events of Default") hereunder:

          (a) failure of Maker to make any payment on this Note as and when the
same becomes due and payable in accordance with the terms hereof;

          (b) failure of Maker to perform any other covenant contained herein,
if the same has continued for thirty (30) days after written notice specifying
such default has been delivered to Maker by Payee;

          (c) the occurrence of any event of default under any Bridge Note or
under the Senior Indebtedness, which event of default is not cured within any
applicable cure period and, in the case of Senior Indebtedness, for which the
holder of such Senior Indebtedness commences legal action against Maker to
collect the Senior Indebtedness;

          (d) if Maker makes an assignment for the benefit of creditors, or
petitions or applies for the appointment of a liquidator, receiver or custodian
(or similar official) of it or of any

Mobility Electronics, Inc. 13% Bridge Promissory Note                    Page 2

<PAGE>   3

substantial part of its assets, or if Maker commences any proceeding or case
relating to it under the Bankruptcy Code or any other bankruptcy,
reorganization, arrangement, insolvency, readjustment of debt, dissolution or
liquidation or similar law of any jurisdiction, or takes any action to authorize
any of the foregoing; or

          (e) if any petition or application of the type described in
subparagraph (e) immediately above is filed or if any such proceeding or case
described in subparagraph (e) is commenced against Maker and is not dismissed
within sixty (60) days, or if Maker indicates its approval thereof, consents
thereto or acquiesces therein, or if an order is entered appointing any such
liquidator or receiver or custodian (or similar official), or adjudicating Maker
bankrupt or insolvent, or approving a petition in any such proceeding, or if a
decree or order for relief is entered in respect of Maker in an involuntary case
under the Bankruptcy Code or any other bankruptcy, reorganization, arrangement,
insolvency, readjustment of debt, dissolution or liquidation or similar law of
any jurisdiction.

     In the event any one or more of the Events of Default specified above
occurs and is continuing, the holder of this Note may (i) accelerate the
maturity of this Note with notice to Maker at which time all such amounts shall
be immediately due and payable, (ii) proceed to protect and enforce its rights
either by suit in equity or by action at law, or by other appropriate
proceedings, whether for the specific performance of any covenant or agreement
contained in this Note or in aid of the exercise of any power or right granted
by this Note, or (iii) enforce any other legal or equitable right of the holder
of this Note.

     6. Delay or Omission Not Waiver. No delay or omission on the part of the
holder of this Note in the exercise of any power, remedy or right under this
Note, or under any other instrument executed pursuant hereto, shall operate as a
waiver thereof, nor shall a single or partial exercise of any such power or
right preclude any other or further exercise thereof or the exercise of any
other right or power hereunder.

     7. Waiver. Any term, covenant, agreement or condition of this Note may,
only with the written consent of Maker and Payee, be amended or compliance
therewith may be waived (either generally or in a particular instance and either
retroactively or prospectively), altered, modified or amended.

     8. Attorneys' Fees and Costs. In the event an Event of Default shall occur,
and in the event that thereafter this Note is placed in the hands of an attorney
for collection, or in the event this Note is collected in whole or in part
through legal proceedings of any nature, then and in any such case Maker
promises to pay all costs of collection, including, but not limited to,
reasonable attorneys' fees and court costs incurred by the holder hereof on
account of such collection, whether or not suit is filed.

Mobility Electronics, Inc. 13% Bridge Promissory Note                    Page 3

<PAGE>   4

     9. Successors and Assigns. All of the covenants, stipulations, promises and
agreements in this Note made by Maker and Payee (by virtue of its acceptance of
this Note) shall bind its successors and assigns, whether so expressed or not.

     10. Maximum Lawful Rate. It is the intent of the Maker and holder of this
Note to conform to and contract in strict compliance with applicable usury law
from time to time in effect. In no way, nor in any event or contingency
(including but not limited to prepayment, default, demand for payment, or
acceleration of the maturity of any obligation), shall the rate of interest
taken, reserved, contacted for, charged or received under this Note exceed the
highest lawful interest rate permitted under applicable law. If the holder of
this Note shall ever receive anything of value which is characterized as
interest under applicable law and which would apart from this provision be in
excess of the highest lawful interest rate permitted under applicable law, an
amount equal to the amount which would have been excessive interest shall,
without penalty, be applied to the reduction of the principal amount owing on
this Note in the inverse order of its maturity and not to the payment of
interest, or refunded to Maker or the other payor thereof if and to the extent
such amount which would have been excessive exceeds such unpaid principal. All
interest paid or agreed to be paid to the holder hereof shall, to the extent
permitted by applicable law, be amortized, prorated, allocated and spread
throughout the full stated term (including any renewal or extension) of this
Note so that the amount of interest on account of such obligation does not
exceed the maximum permitted by applicable law. As used in this Section, the
term "applicable law" shall mean the laws of the State of Delaware or the
federal laws of the United States, whichever laws allow the greater interest, as
such laws now exist or may be changed or amended or come into effect in the
future.

     11. Governing Law. This Note shall be governed by and construed in
accordance with the substantive laws (but not the rules governing conflicts of
laws) of the State of Delaware.

     12. Notice. All notices, demands or requests provided for or permitted to
be given under this Note must be in writing, and shall be given and be deemed
received as set forth in the Purchase Agreement.

     13. Severability. In case any one or more of the provisions contained in
this Note shall for any reason be held to be invalid, illegal or unenforceable
in any respect, such invalidity, illegality or unenforceability shall not affect
any other provision hereof.

Mobility Electronics, Inc. 13% Bridge Promissory Note                    Page 4

<PAGE>   5

     EXECUTED as of the date set forth above.

                                          MAKER:

                                          MOBILITY ELECTRONICS, INC.

                                          By:
                                              ---------------------------------
                                              Charles R. Mollo,
                                              Chief Executive Officer

Mobility Electronics, Inc. 13% Bridge Promissory Note                    Page 5

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