Document:

<PAGE>
                                                                     EXHIBIT 4.1

                        [SANWA BANK LIMITED LETTERHEAD]

PRIVATE AND CONFIDENTIAL

Our Ref: 546/00-GF-610b

13th December, 2001

Jetcrown Industrial Limited
516-517 Hong Leong Ind. Complex,
4 Wang Kwong Road,
Kowloon Bay,
Kowloon

Attn: Mr. Richard Lau

Dear Sirs,

Re: Uncommitted Banking Facilities

We refer to the facility letter dated 27th October, 2000 as amended by the
letter dated 27th December, 2000 (which said facility letter as amended as
aforesaid is hereinafter referred to as the "Facility Letter") whereby we agreed
to make available to you various uncommitted banking facilities upon and subject
to the terms and conditions set out therein.

We write to confirm that with effect from 2nd January, 2002, certain terms of
the Facility Letter shall be amended as follows:-

(1)     Clause 3 of the Facility Letter shall be amended as follows:-

        "3.     Interest

        Loan facility           Interest on each drawing shall be charged at
                                1.25% per annum above our cost of funds as
                                conclusively determined by us. You will have the
                                option to choose any interest period varying
                                from one (1) week to three (3) months and
                                interest shall be payable in arrears on the
                                last day of each applicable interest period.

                                      -1-
<PAGE>

         Overdraft facility     Interest shall be charged at whichever is the
                                higher of (i) the prevailing Hong Kong Dollars
                                Prime Rate quoted by us from time to time or
                                (ii) 0.25% per annum above our cost of funds as
                                conclusively determined by us and shall be
                                payable monthly in arrears on the first day of
                                each calendar month.

         Bills receivable
         facility               Interest shall be charged at (i) whichever is
                                the higher of the prevailing Hong Kong Dollars
                                Prime Rate quoted by us from time to time or our
                                cost of funds as conclusively determined by us
                                (in case of Hong Kong Dollars items) or (ii) 1%
                                per annum above our cost of funds as
                                conclusively determined by us (in case of any
                                other currency items).

         Bills negotiation
         facility               Interest shall be charged at 0.8% per annum
                                above our cost of funds as conclusively
                                determined by us.

         If you fail to pay any sum due hereunder or in respect of any of the
         Facilities (including, without limitation, any sum payable pursuant to
         this paragraph) on its due date, you shall pay default interest on such
         sum from its due date up to the date on which actual payment is
         received by us, on a daily basis, at the rate conclusively determined
         by us to be 5% per annum above whichever is the higher of the
         prevailing Hong Kong Dollars Prime Rate quoted by us from time to time
         or our cost of funds, or, in case of the overdue sum denominated other
         than in Hong Kong Dollars, 5% per annum above our cost of funding the
         overdue sum. Default interest shall be payable on demand."

(2)     Clause 4(a) of the Facility Letter shall be amended as follows:-

        "(a)    Commission in lieu of exchange and opening commission for each
                letter of credit shall be charged as follows:-

                -       1/8% on the first US$100,000 or its equivalent; and

                -       l/32% on the balance, if any."

Save as amended herein, all other terms and conditions as stipulated in the
Facility Letter shall remain unchanged and in full force and effect.

As evidence of your agreement hereof, please return to us on or before 31st
January, 2002 the duplicate of this letter duly signed by you and countersigned
by Deswell Industries, Inc. as the guarantor together with certified copies of
the guarantor's and your relevant Board resolutions.

                                      -2-
<PAGE>
Yours faithfully,

For and on behalf of
The Sanwa Bank, Limited
Hong Kong Branch

/s/ Y. MIKI
-----------------------
Y. Miki
Deputy General Manager

                          ****************************

To:  The Sanwa Bank, Limited
     Hong Kong Branch

We hereby accept the above amendments to the Facility Letter and agree to be
bound thereby.

For and on behalf of
Jetcrown Industrial Limited

/s/ LAU PUI HON
----------------------------
Name: Lau Pui Hon
Title: DIRECTOR
Date: DEC. 29, 2001

                                      -3-
<PAGE>
We hereby acknowledge and agree to the above amendment to the Facility Letter
and confirm that the Continuing Guarantee dated 12th November, 1994 given by us
remains in full force, valid and effect.

For and on behalf of
Deswell Industries, Inc.

/s/ LAU PUI HON
----------------------------
Name: Lau Pui Hon
Title: DIRECTOR
Date: DEC. 29, 2001

                                      -4-<PAGE>
                                                                     EXHIBIT 4.3

                        [STANDARD CHARTERED LETTERHEAD]

DATE: 20th February 2002
OUR REF: C&I/LC/TEAM3/BKE

CONFIDENTIAL

Kwanasia Electronics Co. Ltd.
Units 10-14, 19/F.,
Kwong Sang Hong Centre,
151-153 Hoi Bun Road,
Kwun Tong,
Kowloon.

Attn.: Mr. Lee Shu Kwan/Mr. Tam Man Chi

Dear Sirs,

                BANKING FACILITIES: KWANASIA ELECTRONICS CO. LTD.

We are pleased to confirm that the Bank is willing to make available to your
company (the "Company") the following working capital facilities up to the
amounts indicated.

1.      CURRENT ACCOUNT OVERDRAFT - HKD1,000,000.-

Note
Unutilised Overdraft facility may be available for all Trade Finance
transactions.

2.      TRADE FINANCE GROUP 1 - HKD10,000,000.-

3.      TRADE FINANCE GROUP 2 - HKD4,000,000.-

4.      TRADE FINANCE GROUP 3 - HKD4,000,000.-

The above Trade Finance Groups 1, 2 and 3 are complementary and the combined
outstandings are not to exceed HKD10,000,000.-. Similarly the combined
outstandings of Trade Finance Groups 2 and 3 are not to exceed HKD4,000,000.-.
For product availability, please see the attachment to this letter.

Prior evidence of insurance is required for all "free on board" and "cost and
freight" shipments under import letters of credit.

<PAGE>
                                                                          Page 2

Combined usance and loan period of any one transaction under import facilities
is not to exceed 90 days.

Usance period of export facilities is not to exceed 45 days.

Packing credits allowed with maximum 70% advance for up to 90 days or the expiry
date of the related letters of credit, whichever is earlier.

Import invoice financing is allowed up to 100% finance against presentation of
certified true copy of supplier's invoice for up to 90 days.

Export invoice discounting is allowed with maximum 85% finance for up to 45 days
from invoice date against presentation of certified true copy of the Company's
invoice.

The Company undertakes not to accept any amendments to the master letters of
credit without the prior written consent of the Bank.

5.      STANDBY LETTERS OF CREDIT - HKD5,000,000.-

For the issuance of standby letters of credit up to 1 year to secure working
capital facilities granted by PRC banks.

6.      FACTORING FACILITY - HKD10,000,000.-

For purchase of receivables in accordance with the terms of the Receivables
Purchase Agreement entered into and the rider (if any) from time to time agreed
between the Bank and the Company ("Agreement").

Expressions used in this section have the same meanings as defined in the
Agreement unless otherwise defined or the context otherwise requires.

The above limit represents the FIU Limit.

Customer list to be advised to and approved by the Bank from time to time.

Prepayment will be made by the Bank up to the Prepayment Percentage (if not
zero) less the Bank's Service Charge, but subject to the FIU Limit and the
Concentration Percentage not being exceeded, and conditional upon compliance in
all other respects with the terms of the Agreement.

Credit insurance cover (if applicable) will be taken out in the Bank's name with
either a credit insurer or factoring company appointed by the Bank.

<PAGE>
                                                                          Page 3

The following will also be required for all receivables purchased by the Bank:

(1)     copy of invoice endorsed with notice of assignment of the relevant debt
        to the Bank and otherwise complying with the terms of the Agreement;

(2)     if required by the Bank, formal assignment of debt in the Bank's
        approved form, duly executed by you;

(3)     evidence of delivery of goods or completion of services satisfactory to
        the Bank.

Collection will be done either through the Bank, the Bank's service provider or
a factoring company appointed by the Bank. All proceeds are directly payable to
the Bank.

Discounting Charge will be payable monthly, calculated as the percentage
stipulated in the Agreement of the Funds In Use from time to time.

Service Charge will be calculated as stipulated in the Agreement.

7.      TREASURY FACILITY

The Bank will be pleased to quote rates for foreign exchange spot transactions
and forward transactions (including forward transactions on a non-deliverable
basis) up to 180 days. Quotes for same day or next day settlement can normally
be provided subject to the currency involved and the time of day. Such quotes
will always be at the sole discretion of the Bank.

INTEREST, COMMISSIONS AND FEES

Unless otherwise specified, interest on all sums advanced will be payable
monthly in arrears at Prime or HIBOR, whichever is higher. A default rate of 8%
per annum over Prime or HIBOR, whichever is higher, will apply to amounts not
paid when due or in excess of agreed facility amounts. "Prime" means the rate
which we announce or apply from time to time as our prime rate for lending Hong
Kong Dollars and "HIBOR" means the rate which we determine to be the Hong Kong
Interbank Offered Rate for the relevant period. Commissions will be charged at
our standard rates unless otherwise stipulated. Export bills will be discounted
and import bills will be financed at our standard bills finance rate minus 0.25%
per annum for Hong Kong Dollar bills and at our standard bills finance rates for
foreign currency bills. All past due bills shall bear interest at 4% per annum
above the rates charged on your regular bills outstandings.

Commission on Letters of Credit/Standby Letters of Credit Opening
-----------------------------------------------------------------

First USD50,000.-                    1/4%
USD50,001.- to USD150,000.-          1/12%
Balance                              1/24%

<PAGE>
                                                                          Page 4

Commission in Lieu of Exchange
All amounts                       1/8%

Commission on Import Acceptance
 1/8% per month

You shall pay to the Bank an arrangement fee of HKD10,000.-, payable on the date
on which the Bank's offer of the above facilities are accepted by you as
signified by your counter-signing of this letter. The arrangement fee is
non-refundable in any event. A handling fee in an amount to be mutually agreed
will be payable on each anniversary of the date of this letter if the facilities
are continuing. The fees will be debited to your current account.

Whether or not the documentation for the above facilities is executed or the
facilities are made available to you as contemplated following your acceptance
of this letter, you shall forthwith on demand reimburse the Bank all out of
pocket expenses (including but not limited to legal fees and disbursements)
incurred by the Bank in connection with the facilities including, without
limitation, the negotiation, preparation, execution and/or enforcement of this
letter and the documentation.

AVAILABILITY AND REPAYMENT

The above facilities are subject to periodic review by the Bank at its
discretion, and it is expressly agreed that they will at all times be available
at the sole discretion of the Bank. Notwithstanding any other provisions
contained in this letter or in any other document, the Bank will at all times
have the right to require immediate payment and/or cash collateralisation of all
or part of any sums actually or contingently owing to it in respect of the above
facilities 1-5 and 7, and the right to immediately terminate or suspend, in
whole or in part, all of the above facilities 1-7 and all further utilisation of
these facilities.

   ASSIGNMENT

The Company may not assign or transfer all or any of its rights, benefits or
obligations under this letter (and any documentation or transactions to which
this letter relates) without the Bank's prior written consent.

The Bank may at any time assign or transfer to any one or more banks or other
financial institutions all or any of its rights, benefits or obligations under
this letter (and any documentation or transactions to which this letter relates)
or change its lending office.

<PAGE>
                                                                          Page 5

DOCUMENTATION

Before the above facilities may be used, the enclosed copy of this letter must
be signed by the Company and returned to us together with a certified copy of
appropriate authorising board resolutions.

The following documentation are held/will also be required:

-       General Customer Agreement executed by the Company.

-       Receivables Purchase Agreement and other related documents, including
        without limitation formal assignment of debt where required, in the
        Bank's approved forms for the above Facility 6 executed by the Company.

-       All monies first legal charge over the property known as Units 10-14,
        19/F., Kwong Sang Hong Centre, 151-153 Hoi Bun Road, Kwun Tong, Kowloon
        in the name of the Company. Insurance for the insurable value is to be
        arranged through mutually acceptable insurers and is to be assigned to
        and held by the Bank. If not otherwise paid, we will have the right to
        pay the premiums and debit your current account. We will require a
        formal valuation before the facilities are used, and annually thereafter
        a desk-top valuation with a full valuation every third year.

-       Letter of undertaking by Messrs. Lee Shu Kwan and Tam Man Chi
        covenanting that no personal guarantee will be given to any other banks
        for the account of the Company.

-       Signed original copies of the audited financial statements of the
        Company and Deswell Industries, Inc. within 9 months after their
        financial year end. A signed original copy of the Company's interim
        management accounts within 3 months from statement date. Such other
        information as the Bank may request from time to time.

UNDERTAKINGS

The Company undertakes to the Bank that it will:

-       Immediately inform the Bank of any change of the Company's directors or
        beneficial shareholders or amendment of its memorandum or articles of
        association.

<PAGE>
                                                                          Page 6

Deswell Industries, Inc. undertakes to the Bank that it will: -

-       Give the Bank prior notice if it offers corporate guarantee and/or
        personal guarantees of its directors to any other banks or financial
        institutions for and on behalf of the Company.

CONDITION

-       No in-house bills from related companies including Jetcrown Industrial
        Ltd., Deswell Industries, Inc. and Kwanta Precision Metal Products Co.
        Ltd. would be accepted.

By acceptance of this letter the Company gives consent to the Bank to disclose
details of the Company's account relationship with the Bank (including credit
balances and any security given for the facilities) to all or any of the
following persons (whether in or outside Hong Kong): (i) its Head Office and any
of its offices, branches, related companies or associates, (ii) any actual or
proposed participant or sub-participant in, or assignee or novatee of the Bank's
rights in relation to the Company's accounts, (iii) any agent, contractor or
third party service provider which provides services of any kind to the Bank in
connection with the operation of its business, (iv) any financial institution
with which the Company has or proposes to have dealings to enable credit checks
to be conducted on the Company, and (v) any person to whom the Bank is under an
obligation to make disclosure under the requirements of any law binding on the
Bank or any of its branches.

Please sign the enclosed copy of this letter and return it to the Bank's Credit
Operations at 11th Floor, Standard Chartered Tower, 388 Kwun Tong Road, Kwun
Tong, Kowloon for the attention of Ms. Peggy Yiu, within one month after the
date of this letter, after which this offer will lapse. When accepted, this
letter will supersede any previous facility letter which the Bank has issued to
the Company. This letter will be governed by Hong Kong SAR law.

We enclose a set of documents which should also be completed and returned to the
Bank at the above mentioned address. If you have any queries regarding the
completion of the required documents, please contact Ms. Peggy Yiu, whose
telephone number is 2282-6611. With regard to queries on banking arrangements,
you can contact your Senior Relationship Manager Ms. Angela Leung, whose
telephone number is 2821-1812.

<PAGE>
                                                                          Page 7

We are pleased to be of service to you and take this opportunity to thank you
for your custom.

Yours faithfully,
For and on behalf of STANDARD CHARTERED BANK

/s/ EROS HUNG
-----------------------------------------
Eros Hung
Senior Credit Documentation Manager

EH/PFG/kc
Encl.

Agreed.
For and on behalf of KWANASIA ELECTRONICS CO. LTD.

/s/ TAM MAN CHI     LEE SHU KWAN
------------------------------------------

Agreed.
For and on behalf of DESWELL INDUSTRIES, INC.

/s/ LAU PUI HON
------------------------------------------

<PAGE>

                          KWANASIA ELECTRONICS CO. LTD.

ATTACHMENT REGARDING TRADE FINANCE PRODUCTS

This attachment forms an integral part of our banking facility letter dated 20th
February 2002.

You may use any product or aggregate of products in any one group up to the
limit shown in the attached banking facility letter.

Trade Finance Group 1

-       Discrepant Credit Bills Negotiated - with recourse

-       Purchase of Documents Against Payment Bills of Exchange secured by goods

-       Purchase of Documents Against Acceptance Bills of Exchange with
        ECA/approved insurance cover

-       Back to Back Letters of Credit

-       Import Letters of Credit      - sight and usance
                                      - secured by goods

Trade Finance Group 2

-       Purchase of Documents Against Acceptance Bills of Exchange without
        ECA/approved insurance cover

-       Purchase of Documents Against Payment Bills of Exchange not secured by
        goods

-       Import Letters of Credit      - sight and usance
                                      - not secured by goods

-       Shipping Guarantees

Trade Finance Group 3

-       Pre-shipment Loan - i.e. Packing Credit

-       Acceptance of draft under Import Letter of Credit

-       Release of Documents Against Acceptance or Trust Receipt

-       Loans Against Trust Receipt

-       Post Import Loans

-       Invoice Discounting

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00041-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00041-of-00352.parquet"}]]