<PAGE>

                                AGENT AGREEMENT

     This AGENT Agreement (the "Agreement") is entered into as of August 1st,
                                ---------
1999 (the "Effective Date") by and between Xpeed, Inc., a California corporation
           --------------
having its principal place of business at 4699 Old Ironside Drive, Suite 300,
Santa Clara CA 95054 ("Xpeed"), and Han Kook Chong Mil Ki Ind. Co., Ltd, a
                       -----
corporation organized and existing under the laws of the Republic of Korea,
having its principal place of business at 11/th/ Floor, Manhattan Bldg., 32-2,
Yeoido-Dong, Youngdungpo-Ku, Seoul, 150-010, Republic of Korea (the "AGENT").
                                                                     -----

     In consideration of the covenants and conditions contained herein, the
parties agree as follows:

     1. DEFINITIONS.

          1.1 "Product" shall mean any of the products identified in Exhibit A.
               -------                                               ---------

          1.2 "Territory" shall mean the named accounts, or the geographic,
               ---------
market segment, or political area territory set forth on Exhibit B.
                                                         ---------

          1.3 "End-User" shall mean a customer to whom AGENT sells a Product
               --------
for use by such customer for consumer purposes or in the regular course of such
customer's business and not for resale. In the case of AGENT's internal use of
the Products, AGENT shall be deemed to be an End-User.

          1.4 "Agent" shall mean a representative of Xpeed's products to
               -----
customers in the Territory.

     2. GRANT OF RIGHTS.

          2.1 Appointment. Subject to the terms and conditions of this
              -----------
Agreement, Xpeed hereby appoints AGENT, and AGENT hereby accepts appointment, as
an exclusive (refer to Exhibit D) independent AGENT for the resale and
sublicense of only those Products set forth on Exhibit A in the Territory
                                               ---------
described in Exhibit B to commercial End-Users in the Territory for delivery and
             ---------
use in the Territory. AGENT shall not have the right to appoint any third
parties to distribute Products to any End-User unless jointly agreed to with
Xpeed in writing. AGENT shall not have the right to use, market or distribute
the Product outside of the Territory without prior written consent from Xpeed.
Xpeed reserves the right to revise the Territory upon thirty (30) days written
notice to AGENT.

          2.2 No Other Rights. Except as expressly granted hereunder, Xpeed
              ---------------
grants no license, by implication, estoppel, or otherwise to the Product. AGENT
acknowledges and agrees that its appointment under this Agreement is
nonexclusive and that it obtains no exclusive rights to resell the Products with
respect to any named accounts, or geographic, market segment, or political area.
Xpeed or its licensors retains all rights not expressly granted to AGENT.
<PAGE>

     3. AGENT'S OBLIGATIONS.

     In order to provide maximum protection and quality service to AGENT's
customers, AGENT agrees to comply with the following obligations, which
constitute Xpeed's minimum qualification criteria for United States AGENTs.
AGENT's ability to meet and maintain the minimum qualification criteria within
its immediate corporate organization within the Territory during the term of
this Agreement shall constitute a condition precedent for AGENT's appointment as
an AGENT. Failure to achieve and maintain such compliance shall constitute a
default under this Agreement.

          3.1 AGENT represents that it has the facilities, resources, personnel
and experience to promote, advertise, market, sell and sublicense the Products,
and to perform its obligations under this Agreement. AGENT shall use its best
efforts to promote, market, distribute, sell, and sublicense the Products within
the Territory and shall not perform any act which may hinder or interfere with
the supply and/or licensing of the Products. In no event shall AGENT make any
representations or warranties regarding the Products, which are not included in,
or which are inconsistent with information provided by Xpeed to AGENT.

          3.2 AGENT shall use its best efforts to attain each annual purchase
quota ("Quota") contained in each AGENT Purchase plan (the "Purchase Plan").
        -----                                               -------------
AGENT agrees that Xpeed has the sole authority to set the Purchase Plan for the
first and every subsequent year during which this Agreement is in effect. The
first Purchase Plan is attached as Exhibit D. Both parties agree that Xpeed
                                   ---------
retains the right to determine the Agreement in default for failure to meet the
quota and goals of any Purchase Plan. If for any reason Xpeed does not set a
Purchase Plan for any renewal term, the Purchase Plan for the prior year shall
apply. Xpeed may change the Purchase Plan at any time upon notice to AGENT,
provided that if Xpeed changes the Purchase Plan during an annual term of the
Agreement, the new Purchase Plan shall be applicable to the remaining portion,
but not the prior portion, of that year. Xpeed and AGENT will periodically
review AGENT's actual purchases of Products against AGENTs' Quota to determine
what action, if any is appropriate in light of such a review.

          3.3 AGENT shall not delete any Xpeed tradenames, trademarks, logos,
markings, colors and other insignia (the "Trademarks") that are affixed to the
                                          ----------
Products and included in related materials. AGENT may only use the Trademarks in
conjunction with AGENT's marketing, sale and license of Products and in
accordance with Xpeed's then-current guidelines on the use of Trademarks that
will be provided, from time to time, at AGENT's request. AGENT shall refrain
from any other direct or indirect use, reference to, registration of,
application to register, or employment of Xpeed's Trademarks or those
confusingly similar unless otherwise authorized in writing by Xpeed. Upon
expiration or termination of this Agreement, AGENT shall take all necessary
actions to transfer and assign to Xpeed, any right, title or interest in and to
any of the Trademarks, and the goodwill related thereto, which AGENT may have
acquired in any manner as a result of the handling and selling of Products under
this Agreement and shall immediately cease to us any Trademark. AGENT agrees to
immediately notify Xpeed of any infringement or potential infringement of any
Trademark in the Territory.

          3.4 AGENT represents that it is qualified to support and shall support
the Products in accordance with the service addendum attached as Exhibit E.
                                                                 ---------
AGENT agrees to attend any product

                                      -2-
<PAGE>

or similar training seminars which may be periodically offered by Xpeed by
sending sales and support personnel. Such seminars will be conducted in English
at locations designated by Xpeed. AGENT shall bear all travel, lodging, meal and
other expenses of its personnel connected with such seminars.

          3.5 In recognition of the complexity of computer networking technology
and to ensure the success of Product sales, AGENT shall remain a single-tier
AGENT of Xpeed Products, selling directly to end-users. AGENT shall have no
rights to appoint or authorize any third party to license and/or service the
Products unless expressly agreed to in writing by Xpeed in its sole discretion.

          3.6 AGENT shall promptly advise Xpeed of any complaints or claims
brought or threatened against AGENT with respect to the sale or use of the
Products or with respect to any alleged patent, copyright, trademark, or other
intellectual property infringement. AGENT shall take all reasonable, prompt and
efficient actions to ensure customer satisfaction with the Products and shall
resolve all customer complaints in an expedited manner. In the event that Xpeed
receives three (3) or more complaints from AGENT's customers during any term of
this Agreement which indicate that AGENT has failed to satisfactorily resolve
reasonable customer complaints in a timely fashion, AGENT shall be in default
and Xpeed may give AGENT written notice to cure in accordance with Section 11.2.

          3.7 AGENT shall comply with the terms and conditions of any and all
programs and supplements ("Supplements") applicable to Xpeed United States
                           -----------
AGENTs and to the particular Products resold and sublicensed by AGENT hereunder
and which are put in place or issued from time to time by Xpeed in its sole
discretion. Such Supplements shall be incorporated into and made a part of this
Agreement and shall only be binding as to the particular products intended by
Xpeed to be applicable to each such Supplement.

          3.8 In order that AGENT will be able to promptly supply Products to
its customers, AGENT agrees to purchase and maintain reasonable inventory levels
as specified in the then-current Inventory Supplement. AGENT shall also purchase
each Product that it plans to resell hereunder for sales demonstration purposes
("Sales Demos") which may be subject to special discounts as unilaterally
  -----------
determined by Xpeed. Each purchase order for Sales Demos shall state "For
Demonstration Purposes." Xpeed reserves the unilateral right to limit the
quantity and type of Products ordered for Sales Demos.

          3.9 Within thirty (30) days after AGENT's execution of this Agreement,
AGENT shall provide Xpeed with a non-binding forecast of the quantity of
Products, by Product type, of expected sales of Products for the next three (3)
month period ("Forecast"). By the third Friday of every month thereafter, AGENT
               --------
shall provide a new Forecast for the then following three (3) month period.

          3.10 AGENT shall secure and maintain an insurance policy or policies
adequately protecting AGENT and Xpeed against any loss, liability, or expense
whatsoever, including product liability, worker's compensation, personal injury,
fire, theft, death, property damages or otherwise, that may arise from the
conduct of AGENT's business. Xpeed shall be an additional named insured

                                      -3-
<PAGE>

on such policy or policies. AGENT shall furnish Xpeed with certificates
evidencing all such insurance, which certificates shall contain provisions
requiring the insurance carriers to five Xpeed at least thirty (30) days prior
written notice of any cancellation or material change in such policy.

     4. XPEED'S OBLIGATIONS.

          4.1 Xpeed agrees to provide AGENT with a reasonable supply of Korean
Language Product sales literature and marketing information ("Literature") at
                                                              ----------
then-current prices. AGENT shall return all Literature upon the expiration or
termination of this Agreement.

          4.2 Xpeed shall offer to AGENT Product Certification and Sales
training classes for applicable Products, which will be conducted at a location
and in a format to be determined by Xpeed.

     5. PRICES.

          5.1 During the term of this Agreement, AGENT shall be entitled to
purchase the Products at the prices set forth in Xpeed's then-current Price
List, less any applicable discounts in accordance with the then-current Discount
Schedule Supplement. The current Discount Schedule Supplement is listed in
Exhibit C. All prices are exclusive of all taxes and other charges, including
----------
but not limited to, shipping, handling, insurance, brokerage and other related
charges, governmental sales, use, excise, privilege, occupational, value-added
or other similar taxes, duties or assessments.

          5.2 Xpeed shall be free to periodically change the Price List or
Discount Schedule Supplement for any Products sold under this Agreement at any
time without advance notice to AGENT.

          (a) In the event of an Xpeed price increase, all orders shipped on or
after the effective date of such price increase shall be filled at the new
higher price. Xpeed shall, however, honor all Xpeed accepted and scheduled AGENT
purchase orders for the Products received by Xpeed prior to notice of the date
of the price increase at the prices in effect as of the date the order was
received. The above notwithstanding, Xpeed agrees to deliver at the original
price and for a period not to exceed six (6) months from the effective date of
the new higher price, Products which are required for AGENT to fulfill its long-
term fixed-price contractual commitments. AGENT shall, within thirty (30) days
of the date of such price revision, notify Xpeed in writing of any and all such
contractual obligations, providing to Xpeed adequate evidence and copies of
supporting documentation thereof and of all relevant purchase orders placed on
AGENT by each of AGENT's customers pursuant to such obligations. Failure to so
notify Xpeed within said thirty (30) day period shall constitute a waiver of
AGENT's claim under this Section 5.2.

          (b) In the event of an Xpeed price decrease, all products shipped on
or after the effective date of such price decrease shall be filled at the new
lower price.

          5.3 AGENT and Xpeed to jointly agree on the pricing structure AGENT
charges its customers for the Products and services. Xpeed may suggest and
advertise a suggested retail price for its Products.

                                      -4-
<PAGE>

     6. PAYMENT.

          6.1 AGENT agrees to open a "Confirmed, Irrevocable Letter of Credit"
in US Dollars, thirty (30) days prior to shipment of the products. All such
Letter of Credits will be payable to the following account, in US Dollars:

               Nara Bank                     Account: 05-101530-01
               1102 E. El Camino Real        Routing: 11210090
               Sunnyvale, CA 94087           Account Name: Xpeed, Inc.

          6.2 Except for taxes based on Xpeed's net income, AGENT shall pay any
applicable sales, use, excise, privilege, occupational, value-added or other
similar taxes, duties or assessments, or amounts levied in lieu of such taxes,
now or later imposed under the authority of any national, state or local taxing
authority, based on or measured by (i) charges set forth in this Agreement, (ii)
upon sales of the Products to AGENT or their use, or (iii) upon importation of
the Products into the Territory. Any claim for sales tax or duty exemption by
AGENT shall be effective only after Xpeed's receipt of all proper exemption
forms.

          6.3 AGENT shall pay or reimburse Xpeed for all shipping costs
including transportation, brokerage, handling, and other costs incurred in
delivering the Products from Xpeed's point of shipment.

     7. ORDERING.

          7. 1 Shipments of the Products shall only be made against written
purchase orders issued by AGENT to Xpeed in the United States and which
reference this Agreement. At a minimum, each purchase order shall specify the
following items:

               (a) A complete list of the Products covered by the purchase
order, specifying the quantity, model number and description of each;

               (b) The price of each Product, any applicable discounts, and any
additional charges and costs;

               (c) The billing address, the destination to which the Products
will be delivered, and the requested delivery date; and

               (d) The signature of AGENT's employee or agent who possesses the
authority to place such an order.

          7.2 All orders are subject to acceptance by Xpeed and assignment of
delivery schedules in accordance with Product availability. Xpeed shall
acknowledge AGENT's purchase orders in writing within five (5) days after
receipt. Xpeed's acknowledgment shall note any exceptions regarding matters such
as the items ordered, configuration, and Product pricing. Xpeed shall also
confirm the requested delivery date or offer an alternative delivery date. In no
event shall any order be binding on Xpeed until AGENT's order and Xpeed's
acknowledgment are in agreement

                                      -5-
<PAGE>

as to the items ordered, configuration, pricing, delivery dates, and all other
material terms. Xpeed shall use reasonable efforts to meet agreed-upon projected
delivery dates for the Products. Xpeed shall not be liable for delivery delays.

          7.3 No purchase order, acknowledgment form, or other document or
communication from either party shall vary the terms and conditions of this
Agreement unless both parties expressly agree in writing.

     8. DELIVERY.

          8.1 All deliveries of the Products purchased pursuant to this
Agreement shall be for destinations only in the United States and will be made
F.O.B. Xpeed's plant or other point of shipment. All Products will be packaged
for shipment in accordance with standard industry practices.

          8.2 Unless AGENT has otherwise notified Xpeed in writing, Xpeed shall
select a freight forwarder for transporting the shipment. Notwithstanding
AGENT's notification to Xpeed of particular shipping instructions, Xpeed shall
be free to select any freight forwarder in its discretion for logistical
purposes.

          8.3 Risk of loss and title (excluding software) to the Products shall
pass to AGENT upon delivery to the selected common carrier at Xpeed's plant or
other point of shipment. Insurance coverage on all shipments is the
responsibility of AGENT. All transportation and shipping costs shall be charged
to AGENT's account. AGENT must notify Xpeed in writing within ten (10) days of
receipt of Products of any discrepancies in the shipment of such Products.

          8.4 Xpeed may make changes in the Products in whole or in part to be
supplied to AGENT at any time prior to delivery to include electrical or
mechanical design refinements deemed appropriate by Xpeed without any obligation
to modify or change any Products previously delivered to AGENT. Xpeed reserves
the unilateral right at any time to effect changes in or discontinue the sale or
license of any of its Products. Xpeed shall also have the right to deliver
Products, which comply with earlier specifications. In no event shall Xpeed be
liable to AGENT for damages or any nature whatsoever as a result of its actions
under this Section.

     9. RESCHEDULING AND CANCELLATION OF ORDERS.

          9.1 Upon at least thirty (30) days' prior written notice to Xpeed,
AGENT may reschedule the delivery of any Products scheduled for shipment by up
to ninety (90) days at no charge. Orders may, however, be rescheduled only once.
AGENT's request to reschedule any delivery with less than thirty (30) days'
prior written notice to Xpeed shall be at the sole discretion of Xpeed and shall
be subject to a rescheduling charge of ten percent (10%) of the net order value
of the rescheduled portion of the order.

          9.2 Upon at least sixty (60) days' written notice to Xpeed prior to
the originally scheduled shipment date of Products under this Agreement, AGENT
may cancel any shipment of the Products without charge. The following
cancellation charges based on the total invoice shall apply to any cancellations
made by AGENT less than sixty (60) days prior to shipment as liquidated

                                      -6-
<PAGE>

damages and not as a penalty based on the number of days prior to the scheduled
delivery that written notice of cancellation is received by Xpeed. (See Exhibit
D for superceding conditions):

               Days Notice                Charge
          ---------------------        ---------------
          Greater than 60 days              0%
          3l -- 60 days                     5%
          0 -- 30 days                     10%

     10. LIMITED WARRANTIES.

          10.1 Product Warranty. Xpeed warrants to AGENT that, for a period of
               ----------------
thirteen (13) months from the date of delivery of the Product, the Product will,
under normal use, be free from defects in material and workmanship and that the
Product, when delivered, will perform in substantial accordance with the
documentation supplied by Xpeed with such Product. Xpeed's sole obligation under
this warranty is to use reasonable efforts to correct or replace any non-
conforming Product or, in Xpeed's sole discretion, to require return of such
Product and refund to AGENT all amounts paid by AGENT hereunder with respect to
such nonconforming Product. Warranty claims must be made within ten (10)
business days after the thirteen (13) month warranty period has expired, and
must be made by AGENT and not End-Users.

          10.2 Xpeed will appoint service organization to manage the service and
warranty process (Exhibit E) for the product listed in Exhibit A.

          10.3 Disclaimer. XPEED MAKES NO OTHER WARRANTIES, EXPRESS, IMPLIED,
               ----------
STATUTORY OR OTHERWISE, WITH RESPECT TO THE PRODUCT OR ANY SERVICES PROVIDED
HEREUNDER, AND XPEED SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF FITNESS
FOR A PARTICULAR PURPOSE, MERCHANTABILITY, AND NONINFRINGEMENT. XPEED DOES NOT
WARRANT THAT THE PRODUCT OR ANY SERVICES PROVIDED HEREUNDER WILL MEET AGENT'S OR
ITS END-USERS' REQUIREMENTS, THAT THE OPERATION OF THE PRODUCT WILL BE
UNINTERRUPTED OR ERROR FREE, OR THAT DEFECTS IN THE PRODUCT WILL BE CORRECTED.

          10.4 Representations. AGENT shall not make any warranties or
               ---------------
representations binding on Xpeed with respect to the Product, and AGENT shall
limit its representations regarding the Product to those contained in this
Agreement. AGENT shall indemnify and hold Xpeed harmless from and against
warranty claims made by End-Users for warranties made by AGENT that exceed the
scope of the warranty expressly set forth above.

     11. TERM AND TERMINATION.

          11. 1 Term. This Agreement shall commence upon the Effective Date and
                ----
shall continue in force for an initial term of three (3) years (see Exhibit D
Item 4) unless terminated earlier under the terms of this Section 11 or is
superceded by the bilateral Manufacturing Agreement. This

                                      -7-
<PAGE>

Agreement will renew automatically each of the three (3) years as long as the
terms of Exhibit D Item 4 are satisfied.

          11.2 Termination. This Agreement may be terminated by either party
               -----------
upon notice if the other party (i) breaches any material term or condition of
this Agreement and fails to remedy the breach within sixty (60) days after being
given notice thereof, or, in the event such breach is not reasonably susceptible
of cure within sixty (60) days, such longer period as is reasonably necessary,
or (ii) ceases to function as a going concern or to conduct operations in the
normal course of business, or (iii) has a petition filed by or against it under
any state or federal bankruptcy or insolvency laws which petition has not been
dismissed or set aside within sixty (60) days of filing.

          11.3 Effect of Termination. In the event this Agreement is terminated,
               ---------------------
AGENT' rights under this Agreement shall terminate, provided, however, that each
End-User's right to use the Product previously licensed to it by AGENT shall
survive. All Products and other Xpeed materials provided hereunder will remain
the property of Xpeed and its licensors. Within thirty (30) days after the
termination of this Agreement, AGENT will prepare all such items in its
possession or control for shipment, or destroy such materials as Xpeed may
direct. Upon termination of this Agreement, neither party will retain any copies
of Confidential Information which may have been entrusted to it by the other
party, and within thirty (30) days of a written request by the other party, an
officer of each party shall certify to the other party that all copies of
Confidential Information of the other party received hereunder have been
returned or destroyed.

          11.4 Limitation. In the event of termination by either party in
               ----------
accordance with any of the provisions of this Agreement, neither party shall be
liable to the other because of such termination, for compensation, reimbursement
or damages (i) on account of the loss of prospective profits or anticipated
sales or on account of expenditures, inventory, investment, leases or
commitments in connection with the business or goodwill of Xpeed or AGENT, or
(ii) under any legal theory of special damages or consequential damages.

          11.5 Survival of Provisions. The provisions of Sections 2.2, 3.3, 3.5,
               ----------------------
3.6, 3.7, 5, 6, 10, 11, 12, 13, 14, 15, and 16 of this Agreement shall survive
the termination of this Agreement for any reason. All other rights and
obligations of the parties shall cease upon termination of this Agreement.

     12. PROPERTY RIGHTS.

          12.1 Property Rights. AGENT acknowledges and agrees that, as between
               ---------------
Xpeed and AGENT, Xpeed owns all right, title, and interest in the Product
subject to this Agreement, and in all of Xpeed's patents, trademarks, trade
names, inventions, copyrights, know-how, and trade secrets relating to the
Product.

          12.2 Protection. AGENT will do all things reasonably requested by
               ----------
Xpeed to protect Xpeed's intellectual property rights as those reasonably relate
to AGENT's use, sale, and distribution of the Products under the terms of this
Agreement, including without limitation copyrights, patent rights, trademarks
and trade secrets.

                                      -8-
<PAGE>

          12.3 Proprietary Notices. AGENT will ensure that all Products sold or
               -------------------
otherwise distributed by AGENT, as applicable, will incorporate copyright and
other proprietary notices in the same manner that Xpeed incorporates such
notices in the Product or in any other manner reasonably requested by Xpeed.
AGENT shall not, and shall require that its End-Users do not, remove, alter,
cover or obfuscate any copyright notices or other proprietary rights notices
placed on, or embedded in the Product by Xpeed.

          12.4  Trademarks. During the Term of this Agreement, AGENT shall have
                ----------
the right to indicate to the public that it is an authorized Agent of Xpeed's
Product and to advertise such Product under the Trademarks. All representations
of the Trademarks that AGENT intends to use shall be exact copies of those used
by Xpeed, or shall first be submitted to Xpeed for approval (which shall not be
unreasonably withheld) of design, color and other details. In addition, AGENT
shall fully comply with all reasonable guidelines, if any, communicated by Xpeed
concerning the use of the Trademarks.

          12.5  Restrictions. AGENT shall not alter or remove any of the
                ------------
Trademarks affixed to or embedded in the Products by Xpeed. Except as set forth
in Section 12.4, nothing contained in this Agreement shall grant or shall be
deemed to grant to AGENT any right, title or interest in or to the Trademarks.
At no time during or after the term of this Agreement shall AGENT challenge or
assist others to challenge the Trademarks or the registration thereof or attempt
to register any trademarks, marks or trade names confusingly similar to those of
Xpeed. Upon termination of this Agreement, AGENT shall immediately cease to use
all the Trademarks.

     13. CONFIDENTIAL INFORMATION.

          13.1  Definition. As used in this Agreement, the term "Confidential
                ----------                                       ------------
Information" shall mean any information disclosed by one party to the other
-----------
pursuant to this Agreement that is in written, graphic, machine readable or
other tangible form and is marked "Confidential," "Proprietary," or in some
other manner to indicate its confidential nature. Confidential Information may
also include oral information disclosed by one party to the other pursuant to
this Agreement, provided that such information is designated as confidential at
the time of disclosure and reduced to a written summary by the disclosing party,
within thirty (30) days after its oral disclosure, which is marked in a manner
to indicate its confidential nature and delivered to the receiving party.

          13.2  General. Each party shall treat as confidential all Confidential
                -------
Information of the other party, shall not use such Confidential Information
except as expressly set forth herein or otherwise authorized in writing, shall
implement reasonable procedures to prohibit the disclosure, unauthorized
duplication, misuse or removal of the other party's Confidential Information and
shall not disclose such Confidential Information to any third party except as
may be necessary and required in connection with the rights and obligations of
such party under this Agreement, and subject to confidentiality and nonuse
obligations at least as protective as those set forth herein. Without limiting
the foregoing, each of the parties shall use at least the same procedures and
degree of care which it uses to prevent the disclosure of its own confidential
information of like importance to prevent the disclosure of Confidential
Information disclosed to it by the other party under this Agreement, but in no
event less than reasonable care. The parties further agree to keep confidential
the terms and conditions of this Agreement.

                                      -9-
<PAGE>

          13.3 Exceptions. Notwithstanding the above, neither party shall have
               ----------
liability to the other with regard to any Confidential Information of the other
which: (i) was generally known and available in the public domain at the time it
was disclosed or becomes generally known and available in the public domain
through no fault of the receiving party; (ii) was known to the receiving party
at the time of disclosure; (iii) is disclosed with the prior written approval of
the disclosing party; (iv) was independently developed by the receiving party
without any use of the disclosing party's Confidential Information; or (v)
becomes known to the receiving party from a source other than the disclosing
party without breach of this Agreement by the receiving party and otherwise not
in violation of the disclosing party's rights.

          13.4 Employee Agreements. Each party shall obtain the execution of
               -------------------
non-disclosure agreements with its employees, agents and consultants having
access to Confidential Information of the other party, and shall diligently
enforce such agreements.

          13.5 Remedies. If either party breaches any of its obligations with
               --------
respect to confidentiality and unauthorized use of Confidential Information
hereunder, the other party or its licensors shall be entitled to equitable
relief to protect its interest therein, including but not limited to injunctive
relief, as well as money damages.

     14. INTELLECTUAL PROPERTY INDEMNITY.

          14.1 Indemnification. Xpeed shall defend, indemnify and hold AGENT
               ---------------
harmless from and against all damage, liability, claim, action, demand, loss,
settlement, expense and costs (including, without limitation, reasonable
attorney's fees and court costs) arising out of any claim that the Product
improperly includes third party copyrighted subject matter or third party trade
secrets, and will, at its sole cost and expense defend any suit or proceeding
brought against AGENT relating thereto, provided that AGENT (i) promptly
notifies Xpeed of the claim of infringement or legal proceeding, (ii) gives
Xpeed the authority to settle, compromise or litigate such suit or proceeding,
and (iii) does not settle, or agree to settle, any such suit without the prior
written permission of Xpeed. If it is adjudicatively determined, or if Xpeed
believes it may be determined, that the Product infringes in the manner
described above, then Xpeed shall, at its option do one of the following: (a)
procure for AGENT the right to use or distribute such Product in the Territory
as contemplated herein; (b) replace or modify the Product with a functionally
equivalent product; or (c) if (a) and (b) are not practicable, as determined in
Xpeed's sole discretion, terminate this Agreement with respect to such Product.
Xpeed will not be liable for any costs or expenses incurred without its prior
written authorization.

          14.2 Limitation. Notwithstanding the provisions of Section 14.1 above,
               ----------
Xpeed assumes no liability to the extent such claims are based on (i)
combination of the Product with software or hardware not provided by Xpeed if
the infringement would have been avoided by use of the Product alone; (ii) any
marking or branding not applied by Xpeed or applied at the request of an
authorized employee of AGENT; or (iii) any modification of the Product, or any
part thereof, unless such modification was made by or authorized by Xpeed, if
the infringement would have been avoided in the absence of such modification.

                                      -10-
<PAGE>

          14.3 Entire Liability. THE FOREGOING PROVISIONS OF THIS SECTION 14
               ----------------
STATE THE ENTIRE LIABILITY AND OBLIGATIONS OF XPEED, AND THE EXCLUSIVE REMEDY OF
AGENT, WITH RESPECT TO THE INFRINGEMENT OF ANY PATENT, COPYRIGHT, TRADEMARK,
TRADE SECRET OR OTHER INTELLECTUAL PROPERTY RIGHT BY THE PRODUCT.

     15. LIMITED LIABILITY.

     EXCEPT FOR LIABILITY UNDER SECTION 13 AND LIABILITY FOR THIRD PARTY CLAIMS
ARISING UNNDER SECTION 14, EACH PARTY'S LIABILITY ARISING OUT OF THIS AGREEMENT,
THE TERMINATION THEREOF, AND/OR THE PROVISION OF GOODS OR SERVICES HEREUNDER
WILL BE LIMITED TO THE AMOUNT PAID BY AGENT HEREUNDER. EXCEPT FOR LIABILITY
UNDER SECTION 13 OR LIABILITY FOR THIRD PARTY CLAIMS ARISING UNDER SECTION 14,
IN NO EVENT WILL EITHER PARTY BE LIABLE TO THE OTHER PARTY OR ANY OTHER ENTITY
FOR LOSS OF DATA, COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES OR ANY
SPECIAL, CONSEQUENTIAL OR INCIDENTAL DAMAGES, UNDER ANY CAUSE OF ACTION, WHETHER
FOR BREACH OF CONTRACT, TORT (INCLUDING NEGLIGENCE), OR OTHERWISE, AND WHETHER
OR NOT SUCH PARTY OR ITS AGENTS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE. THIS LIMITATION WILL APPLY NOTWITHSTANDING ANY FAILURE OF ESSENTIAL
PURPOSE OF ANY LIMITED REMEDY PROVIDED HEREIN.

     16. MISCELLANEOUS.

          16.1 Governing Law. This Agreement shall be governed by and
               -------------
interpreted in accordance with the laws of California without reference to
conflict of laws principles and excluding the 1980 United Nations Convention on
Contracts for the International Sale of Goods. Any claim, controversy, or
dispute (collectively, "Disputes") concerning any issues arising out of or
                        --------
relating to this Agreement shall be submitted in writing to the legal
departments of each party, who shall attempt to resolve the Dispute. In the
event the legal departments are unable to resolve the Dispute within thirty (30)
business days, the Dispute shall be escalated in writing to executive management
of the companies who shall attempt to resolve the Dispute. In the event there is
no resolution after this process, the parties may proceed to resolve the Dispute
as they individually see fit.

          16.2 Assignment. Neither party may assign or delegate this Agreement
               ----------
or any of its licenses, rights or duties under this Agreement, directly or
indirectly, by operation of law or otherwise, without the prior written consent
of the other party, except in the case of a sale or other transfer of
substantially all such party's assets or equity, whether by sale of assets or
stock or by merger or other reorganization, provided that the assignee has
agreed in writing to be bound by all the terms and conditions of this Agreement,
and further, provided that AGENT may not assign this Agreement or any of its
licenses, rights or duties hereunder, to any entity which, in the reasonable
judgement of Xpeed, is a direct competitor of Xpeed. Upon any such attempted
prohibited assignment or delegation this Agreement shall automatically
terminate. Except as provided above, this Agreement shall inure to the benefit
of each party's successors and assigns.

                                      -11-
<PAGE>

          16.3 Authority. Each party represents that all corporate action
               ---------
necessary for the authorization, execution and delivery of this Agreement by
such party and the performance of its obligations hereunder has been taken.

          16.4 Notices. All notices, demands or consents required or permitted
               -------
under this Agreement shall be in writing. Notice shall be considered delivered
and effective (a) when personally delivered; (b) the day following transmission
if sent by telex, telegram or facsimile followed by written confirmation by
registered overnight carrier or certified United States mail; or (c) one (1) day
after posting when sent by registered private overnight carrier (e.g., DHL,
Federal Express, etc.); or (d) five (5) days after posting when sent by
certified United States mail. Notices shall be sent to the parties at the
addresses set forth on the first page of this Agreement or at such other address
as shall be given by either party to the other in writing.

          16.5 Partial Invalidity. If any paragraph, provision, or clause in
               ------------------
this Agreement shall be found or be held to be invalid or unenforceable in any
jurisdiction in which this Agreement is being performed, the remainder of this
Agreement shall be valid and enforceable and the parties shall negotiate, in
good faith, a substitute, valid and enforceable provision which most nearly
effects the parties' intent in entering into this Agreement.

          16.6 Counterparts. This Agreement may be executed in two or more
               ------------
counterparts, all of which, taken together, shall be regarded as one and the
same instrument.

          16.7 Amendment and Waiver. No modification, amendment or waiver of any
               --------------------
provision of this Agreement shall be effective unless in writing, with explicit
reference to this Section 16.7, and signed by the party to be charged. The
failure of either party to enforce at any time the provisions of this Agreement
shall in no way constitute a present or future waiver of such provisions, nor in
any way affect the right of either party to enforce each and every such
provision thereafter.

          16.8 Independent Contractors. The relationship of Xpeed and AGENT
               -----------------------
established by this Agreement is that of independent contractors, and nothing
contained in this Agreement shall be construed to constitute the parties as
partners, joint venturers, co-owners or otherwise as participants in a joint or
common undertaking, or allow either party to create or assume any obligation on
behalf of the other party. All financial obligations associated with a party's
business are the sole responsibility of such party.

          16.9 Export Control. AGENT understands and acknowledges that Xpeed is
               --------------
subject to regulation by agencies of the United States Government, including,
but not limited to, the U.S. Department of Commerce, which prohibit export or
diversion of certain technology to certain countries. Any and all obligations of
Xpeed to provide the Product, as well as any other technical information or
assistance shall be subject in all respects to such United States laws and
regulations as shall from time to time govern the license and delivery of
technology abroad by persons subject to the jurisdiction of the United States,
including the Export Administration Act of 1979, as amended, any successor
legislation, and the Export Administration Regulations issued by the Department
of Commerce, Bureau of Export Administration. AGENT warrants that it will comply
with the Export

                                      -12-
<PAGE>

Administration Regulations and other United States laws and regulations
governing exports in effect from time to time.

          16.10  Governmental Approvals. AGENT represents and warrants that it
                 ----------------------
will obtain all required approvals of the government of any country outside the
United States in which it markets or distributes the Product in connection with
this Agreement. AGENT understands and agrees that it may not market or
distribute the Product in any jurisdiction that is outside of its Territory.

          16.11  Applicable Laws. AGENT agrees that it will comply with all
                 ---------------
applicable laws of each jurisdiction applicable to AGENT's activities under this
Agreement.

          16.12  Force Majeure. Nonperformance of either party, except the
                 -------------
payment of money, shall be excused to the extent that performance is rendered
impossible by strike, fire, acts of God, governmental acts or orders or
restrictions, failure of suppliers, or any other reason where failure to perform
is beyond the reasonable control of and is not caused by the negligence of the
non-performing party. In the event such delay extends delivery of Product beyond
thirty (30) days, AGENT may cancel such corresponding purchase order without
liability for such cancellation.

          16.13  Entire Agreement. The terms and conditions herein contained,
                 ----------------
including all Exhibits which are hereby incorporated herein by reference,
constitute the entire agreement between the parties and supersede all previous
agreements and understandings, whether oral or written, between the parties
hereto with respect to the subject matter hereof, and no agreement or
understanding varying or extending the same shall be binding upon either party
hereto unless in a written document signed by the party to be bound thereby.

          16.14  Construction. The subject headings of the sections of this
                 ------------
Agreement are included for convenience only and shall not affect the
construction or interpretation of any of its provisions. The neuter gender shall
be construed to include the masculine and feminine and vice versa. The singular
number shall be construed to include plural and vice versa. The parties agree
that they have been represented by counsel during the negotiation, preparation,
and execution of this Agreement and therefore waive the application of any law,
regulation, holding, or rule of construction providing that ambiguities in an
agreement or other document will be construed against the party drafting such
agreement or document.

          16.15  Market Conditions. This Agreement may be reviewed by both
                 -----------------
parties should the Korean Market conditions change. Any modifications to this
Agreement must be approved in writing by both parties.

                                      -13-
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
signed by duly authorized officers or representatives as of the date first above
written.

XPEED CORPORATION                       AGENT

By: /s/ Michael Pak                     For: /s/ BH Chang
   -------------------------                -----------------------------------
Name: Michael Pak                       Name: BH Chang
     -----------------------                 ----------------------------------
Title: President/CEO.                   Title: President/CEO.
      ----------------------                  ---------------------------------
Company: Xpeed, Inc.                    Company: Han Kook Chung Mil Ki Co., Ltd
        --------------------                   --------------------------------
Date: August 25, 1999                   Date: Aug. 25, 1999
     -----------------------                 ----------------------------------

                                      -14-
<PAGE>

                                   EXHIBIT A

                                    Product
                                    -------

XTAN400H       ANSI 1.413.2 ADSL Full Rate (Alcatel Compatible) Modem

                                      -15-
<PAGE>

                                   EXHIBIT B

                                   Territory
                                   ---------

                               REPUBLIC OF KOREA

                                      -16-
<PAGE>

                                   EXHIBIT C

                   Price List & Discount Schedule Supplement
                   -----------------------------------------

                       Suggested List Price: $199.00 U.S

Volume Discount Chart
--------------------------------------------------------------------------------

                            AGENT DISCOUNT SCHEDULE
--------------------------------------------------------------------------------
Part Number      Description        Volume     Agent Cost   Suggested Resale
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
XTAN400H         ANSI 1.413.2 ADSL   1K Units    $160.00        $199.00
--------------------------------------------------------------------------------
                                     5K Units    $150.00        $189.00
--------------------------------------------------------------------------------
                                     10K Units   $145.00        $179.00
--------------------------------------------------------------------------------
                                     50K Units   $139.00        $175.00
--------------------------------------------------------------------------------

                                      -17-
<PAGE>

                                   EXHIBIT D

                                 Purchase Plan
                                 -------------

1. AGENT to purchase 50,000 units of XTAN400H ADSL CPE Adapter Card with the
   scheduled delivery over the next 7 months, with a minimum of 30,000 units to
   be delivered by 12/31/99. The purchase order placed for 50,000 units is to be
   non-cancelable, subject to Hanaro's written approval of interoperability.
   AGENT becomes exclusive agent for the Republic of Korea.

2. AGENT to open $1,000,000 US, Confirmed Irrevocable Letter of Credit to cover
   initial shipments, within 2 weeks of approval of this Agreement. Shipments
   will not begin until written approval of interoperability from Hanaro has
   been obtained along with regulatory approvals within Korea.

3. AGENT to purchase 100,000 Kits of XTAN400H ADSL components for manufacture of
   product in Korea starting in the Year 2000. If less than 100,000 Kits are
   purchased, then the terms of section 11.2 of this Agreement apply. Kit
   comprises the following components:

--------------------------------------------------------------------------------
   Qty            Description                 Xpeed PN          Packaging
--------------------------------------------------------------------------------
  1         ADSL Analog front end AS          XP201.0003         TQFP64
--------------------------------------------------------------------------------
  1         ADSL Physical Layer ASlC          XP201-0004         PQFP144
--------------------------------------------------------------------------------
  1         ADSL Bridge to PCI                XP201-0005         PQFP160
--------------------------------------------------------------------------------
  1         CRYSTAL.25Mhz                     XP211-0016         Half Height
--------------------------------------------------------------------------------
  1         VCXO                              XP211-0015
--------------------------------------------------------------------------------
  2         470uH,5%                          XP210-0063
--------------------------------------------------------------------------------
  2         560uH,5%                          XP210-0064
--------------------------------------------------------------------------------
  2         1000uH,5%                         XP210-0065
--------------------------------------------------------------------------------
  1         Transformer                       XP213-0015
--------------------------------------------------------------------------------

4. AGENT to purchase 100,000 kits or complete units of XTAN400H ADSL CPE Adapter
   Card per year for each of the years of 2001 and 2002, provided the Agent
   Agreement is not superceded by a bilateral Manufacturer Agreement.

5. Should conditions change for either party to this Agreement, both parties
   agree to work diligently to resolve those issues in good faith.

                                      -18-
<PAGE>

                                   EXHIBIT E

                                Service Addendum
                                ----------------

To be determined.

                                      -19-