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                                                                EXHIBIT 10(d)(i)

                                December 13, 2000

PERSONAL AND CONFIDENTIAL

Mr. Douglas J. Glader
MiLAN Technology Corporation
1299 Orleans Avenue
Sunnyvale, CA   94089

Dear Doug:

         This letter, dated as of the date set forth above, confirms the terms
of an amendment to your Employment Agreement with the Company dated February 6,
1995, as previously amended by letter agreements dated January 16, 1997 and
November 20, 2000 (the "Agreement"). This letter also clarifies certain items
contained in a memorandum dated April 19, 2000 regarding your relocation to
California (the "Memorandum").

         1. The Company shall satisfy any obligation that you incur for federal
and state income taxes on amounts that the Company either paid on your behalf or
paid to you in reimbursement of your expenses related to the following items:
house-hunting trips, temporary housing, household moving and insurance,
temporary storage, and closing costs on both your previous residence in
Minnesota and your current residence in California.

         2. The Company shall pay you (a) $8,481.66 per month and (b) the
difference between annual real estate taxes you pay on your current residence in
California and the 2000 homestead property tax on your former residence in
Minnesota (the amounts in (a) and (b) are referred to as "Housing Normalization
Payments") until the earliest of (i) the date on which you sell your current
residence in California, (ii) the date on which you cease to be an employee of
the Company, or (iii) the first date on which you are both free to trade under
the Company's insider trading policy and you are legally entitled to sell shares
of the Company's Common Stock that can be acquired under stock options granted
to you by the Company and the net profit from such a sale (whether or not such
sale actually occurs) after your payment of federal and state income taxes
(whether or not such taxes are actually paid) would equal at least one million
dollars. In addition, the Company agrees to make an additional after-tax payment
to you in the full amount necessary to cover the additional federal and state
income tax liability imposed on you because of your receipt of the Housing
Normalization Payments, but reduced by any tax benefit you derive as a result of
the deductibility of payments you make that are attributable to the Housing
Normalization Payments.

         3. You shall repay to the Company $243,056.00 on or before January 26,
2001.

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         4. If your employment is terminated by the Company without "cause", you
shall be entitled to severance pay equal to one year's base salary and a bonus
(if earned) that would be prorated for the portion of the fiscal year through
your employment termination date. The definition of "cause", which was
originally attached as an appendix to the Agreement, is now attached to this
letter. This letter shall not be construed so as to amend the definition of
"cause" contained in the terms and conditions of your options to purchase shares
of the Company's Common Stock.

         This letter constitutes the entire agreement between you and the
Company regarding the subject matters contained herein and supersedes the
January 16, 1997 and November 20, 2000 letter agreements, the Memorandum, and
all other prior agreements and understandings relating to such subject matters.

         If the terms stated above are acceptable, please confirm by signing the
enclosed copy below and returning it to me.

                                     Yours very truly,

                                     DIGI INTERNATIONAL INC.

                                     /s/ Joseph T. Dunsmore
                                     -------------------------------------------
                                         By Joseph T. Dunsmore
                                         President and Chief Executive Officer

                                     ACCEPTED:

                                     /s/ Douglas J. Glader
                                     -------------------------------------------
                                         Douglas J. Glader

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                                                                        APPENDIX

                     Definition of Cause - Douglas J. Glader
                                December 13, 2000

         For purposes of Douglas J. Glader's letter dated as of December 13,
2000, "cause" shall mean only the following: (i) indictment or conviction of, or
a plea of nolo contendere to, (A) any felony (other than any felony arising out
of negligence) or any misdemeanor involving moral turpitude, or (B) any crime or
offense involving dishonesty with respect to Digi International Inc. or any of
its subsidiaries (collectively, the "Company"); (ii) theft or embezzlement of
Company property or commission of similar acts involving dishonesty or moral
turpitude; (iii) repeated material negligence in the performance of your duties;
(iv) your failure to devote substantially all of your working time and efforts
during normal business hours to the Company's business; (v) knowing engagement
in conduct which is materially injurious to the Company; (vi) knowing failure,
for your own benefit, to comply with the Company's policies concerning
confidentiality; (vii) knowingly providing materially misleading information
concerning the Company to the Company's Chief Executive Officer or Board of
Directors, any governmental body or regulatory agency or to any lender or other
financing source or proposed financing source of the Company; or (viii) any
other failure by you to substantially perform your material duties (excluding
nonperformance resulting from your disability) which failure is not cured within
thirty (30) days after written notice from the Chairman of the Board or the
Chief Executive Officer of the Company specifying the act of nonperformance or
within such longer period (but no longer than ninety (90) days in any event) as
is reasonably required to cure such nonperformance.

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                                                                EXHIBIT 10(e)(i)

                                November 20, 2000

PERSONAL AND CONFIDENTIAL
Mr. Subramanian Krishnan
Digi International Inc.
11001 Bren Road East
Minnetonka, MN  55343

Dear Kris:

         This letter confirms the terms of an amendment to your severance
agreement with the Company as set forth in the letter agreement dated March 26,
1999 (the "Agreement"). Except as specifically provided for herein, the terms of
the Agreement remain in full force and effect.

         If you are terminated by the Company without "cause" on or before the
date of the January 2001 Annual Meeting of Shareholders or any adjournment
thereof, you would be entitled to severance equal to one year's base salary and
a bonus (if earned), based on your cash bonus target that would be pro-rated for
the portion of the fiscal year through the termination date.

         The Agreement as amended by this letter constitutes the entire
agreement between you and the Company regarding the subject matter contained
therein and supersedes all prior agreements and understandings relating thereto.

         If the terms outlined above are acceptable, please confirm by signing
the enclosed copy below and returning it to me.

                                  Very truly yours,

                                  DIGI INTERNATIONAL INC.

                                  By Joseph T. Dunsmore
                                  President and Chief Executive Officer

                                  ACCEPTED:

                                  /s/ Subramanian Krishnan
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                                  Subramanian Krishnan<PAGE>   1

                                                                   EXHIBIT 10(g)
3/29/00

Mr. Bruce Berger
2916 Bethany Place
Clearwater, Florida  33759

Dear Bruce,

On behalf of Digi International Inc., I am pleased to offer you employment as
Vice President and General Manager, European Operations reporting to Joe
Dunsmore.

TERMS OF ASSIGNMENT

The first three months of your employment will be a temporary assignment in
Minneapolis. You will then be placed on expatriate status and relocated to
Germany. Please refer to the attached copy of your Temporary Assignment
Agreement for further details of Digi's expatriate program.

COMPENSATION

Your starting annualized total compensation target for this position is
$380,000. This is based on an annualized base salary of $200,000 and an
annualized incentive target of $180,000.

INCENTIVE PLAN: You will participate in Digi's corporate incentive program. Your
target incentive is 90% of base salary. Incentive payouts are based 50% on
individual performance and 50% on corporate performance. This program requires a
threshold level of corporate performance before incentive payouts are made. Your
fiscal 2000 incentive payment will be guaranteed at target (on a pro rata
basis).

STOCK OPTIONS

We will recommend to the Board of Directors an initial grant of 75,000 stock
options. Your options will be at the market price as of closing on the day that
the board approves your grant. Options will vest over four years at a rate of
25% (18,750 shares) upon completion of one year, then proportionate monthly
vesting thereafter. In the event that the Board of Directors does not approve
the full grant of 75,000 shares, we will re-negotiate the terms of your
compensation package. Joe Dunsmore will make a special request to the Board of
Directors requesting a full acceleration of the vesting of your options upon
involuntary termination for reasons other than cause (to be outlined in the
stock option agreement). Please understand that the current policy of the Board
is to approve this request only for officers of the company and that we can not
predict or guarantee approval of this request. If the request is denied, no
adjustments will be made to any terms of this offer or your expatriate
agreement.

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BENEFITS

While on expatriate assignment, you will participate in the U.S. based benefit
plans as allowed by U.S. and German insurance and tax regulations. Digi's
benefit program includes Medical, Dental, Life and Disability Insurance, Medical
and Dependent Care Reimbursement Plans, 401(k) Savings Plan, Employee Stock
Purchase Plan, and a Tuition Reimbursement Program. You will be eligible for
participation in Digi's health insurance programs on the first day active
employment with the company and will be eligible for participation in the 401(k)
Savings Plan on the first day of the month following date of hire. Stock
Purchase Plan participation eligibility begins on the first of January, April,
July and October following date of hire.

Vacation accrual begins on the date of hire. Your annualized accrual will be 4
weeks. You will be entitled to the local holidays observed by the European
office while on assignment.

RELOCATION

Digi will cover the relocation costs resulting for the move to Germany and the
subsequent move to Minneapolis or other mutually agreed upon location at the end
of your European assignment. Refer to the copy dated 3/29/00 of the expatriate
agreement for full details on the relocation benefits. Covered expenses include:

     o    Purchase of your current residence if it does not sell within 90 days
          of the date it is listed. The home purchase will be based on the
          average of two independent appraisals. Our target is to have this
          property sold (either to the final buyer or Digi International) prior
          to your departure to Germany.

     o    Realtor fees and closing costs on the sale of your existing home.

     o    Temporary housing expenses during your initial three-month assignment
          in Minneapolis. This includes a fully furnished apartment, rental car
          expense for two vehicles, and storage costs for your household goods.
          Digi will provide a $1,500 gross payment to cover all other incidental
          expenses resulting from your temporary move to Minneapolis.

     o    One advance house hunting trip to Germany for you and your spouse.
          This can be up to one week in duration.

     o    Shipment and temporary storage of household goods. Storage of your
          household goods not shipped to Germany.

     o    Upon your relocation to Minneapolis or other mutually agreed upon
          location at the end of your expatriate assignment, relocation benefits
          include one advance house hunting trip, the closing costs on the
          purchase of a new home and 90 days of temporary housing costs. Closing
          costs do not include points paid on the purchase

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          of a new home. Shipment of household goods will be covered as detailed
          in the expatriate agreement.

     o    A "gross-up" of all taxable relocation expenses.

PRE-EMPLOYMENT TRIP TO GERMANY

Digi International will provide you and your spouse with a trip to Germany prior
to your acceptance of this offer. The trip includes airfare (economy class),
lodging, transportation, meals and other incidental expenses. Please contact me
to initiate the arrangements for this trip.

OTHER

If Digi International should terminate your employment at any point after your
successful repatriation to a United States assignment, you will be provided with
six months of severance pay (based on your base salary at the time of the
event). You will also receive a pro-rata bonus payment based on number of months
worked in the fiscal year and actual company fiscal year performance against
objectives.

This does not include any situations where you were involuntarily terminated for
cause. Typical reasons for termination for cause include but are not limited to:
failure to perform job duties; violation of company policies; being in
competition with the employer; fighting or other unacceptable conduct; and
insubordination or failure to carry out an order.

DIGI INTERNATIONAL EMPLOYMENT AGREEMENT

This offer of employment is contingent upon your signature on the enclosed Digi
International Employment Agreement. Your signature constitutes acceptance of the
terms and conditions contained in the Agreement, so please read it thoroughly
prior to signing. This offer is also conditioned upon Digi's determination that
you are not subject to any agreement with any former employer or any other party
that would prohibit you from working in the position of MANAGING DIRECTOR,
EUROPEAN OPERATIONS. If at any time in the future the Company determines that
you are subject to an agreement that, in Digi's sole discretion, would prohibit
your employment by Digi, Digi may withdraw this offer of employment or terminate
your employment with the Company.

Employment with Digi International Inc. is "at will," which means that it is for
no definite period and may be terminated by either you or Digi at any time for
any reason without prior notice. I understand, agree, and acknowledge that any
reliance on any statements by any representative of the company contrary to this
"at will" arrangement is unreasonable and may not form any basis for my reliance
thereon.

Your start date is targeted for April 17, 2000. Please inform Joe of your
acceptance of this offer within one week of your trip to Germany and acknowledge
your acceptance by signing

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one of the enclosed copies and returning it to me along with your signed
Employment Agreement prior to your first day of employment.

Bruce, you will be a great addition to the "Digi team". Please contact me with
any questions you may have and to negotiate a start date.

Sincerely,

DIGI INTERNATIONAL INC.

    /s/ Tracy Roberts
--------------------------
Tracy Roberts
Director, Human Resources

OFFER ACCEPTED:

    /s/ Bruce Berger           April 3, 2000            May 1, 2000
------------------------     -----------------    ----------------------
Bruce Berger                       Date                 Start Date

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