
<PAGE>

                                                                    EXHIBIT 24.1


                             DIGI INTERNATIONAL INC.

                                Power of Attorney
                           of Director and/or Officer


          The undersigned director and/or officer of Digi International Inc., a
Delaware corporation, does hereby make, constitute and appoint Jerry A. Dusa and
Jonathon E. Killmer, and either of them, the undersigned's true and lawful
attorneys-in-fact, with power of substitution, for the undersigned and in the
undersigned's name, place and stead, to sign and affix the undersigned's name as
such director and/or officer of said Corporation to a Registration Statement or
Registration Statements, on Form S-8 or other applicable form, and all
amendments, including post-effective amendments, thereto, to be filed by said
Corporation with the Securities and Exchange Commission, Washington, D.C., in
connection with the registration under the Securities Act of 1933, as amended,
of shares of Common Stock of said Corporation authorized for issuance under said
Corporation's Stock Option Plan as Amended and Restated, and to file the same,
with all exhibits thereto and other supporting documents, with said Commission,
granting unto said attorneys-in-fact, and either of them, full power and
authority to do and perform any and all acts necessary or incidental to the
performance and execution of the powers herein expressly granted.

          IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 6th day of March, 1997.



                              Robert S. Moe
                              -------------------------------------------------
                              Robert S. Moe


<PAGE>

                             DIGI INTERNATIONAL INC.

                                Power of Attorney
                           of Director and/or Officer


          The undersigned director and/or officer of Digi International Inc., a
Delaware corporation, does hereby make, constitute and appoint Jerry A. Dusa and
Jonathon E. Killmer, and either of them, the undersigned's true and lawful
attorneys-in-fact, with power of substitution, for the undersigned and in the
undersigned's name, place and stead, to sign and affix the undersigned's name as
such director and/or officer of said Corporation to a Registration Statement or
Registration Statements, on Form S-8 or other applicable form, and all
amendments, including post-effective amendments, thereto, to be filed by said
Corporation with the Securities and Exchange Commission, Washington, D.C., in
connection with the registration under the Securities Act of 1933, as amended,
of shares of Common Stock of said Corporation authorized for issuance under said
Corporation's Stock Option Plan as Amended and Restated, and to file the same,
with all exhibits thereto and other supporting documents, with said Commission,
granting unto said attorneys-in-fact, and either of them, full power and
authority to do and perform any and all acts necessary or incidental to the
performance and execution of the powers herein expressly granted.

          IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 6th day of March, 1997.



                              Willis K. Drake
                              -------------------------------------------------
                              Willis K. Drake

<PAGE>

                             DIGI INTERNATIONAL INC.

                                Power of Attorney
                           of Director and/or Officer


          The undersigned director and/or officer of Digi International Inc., a
Delaware corporation, does hereby make, constitute and appoint Jerry A. Dusa and
Jonathon E. Killmer, and either of them, the undersigned's true and lawful
attorneys-in-fact, with power of substitution, for the undersigned and in the
undersigned's name, place and stead, to sign and affix the undersigned's name as
such director and/or officer of said Corporation to a Registration Statement or
Registration Statements, on Form S-8 or other applicable form, and all
amendments, including post-effective amendments, thereto, to be filed by said
Corporation with the Securities and Exchange Commission, Washington, D.C., in
connection with the registration under the Securities Act of 1933, as amended,
of shares of Common Stock of said Corporation authorized for issuance under said
Corporation's Stock Option Plan as Amended and Restated, and to file the same,
with all exhibits thereto and other supporting documents, with said Commission,
granting unto said attorneys-in-fact, and either of them, full power and
authority to do and perform any and all acts necessary or incidental to the
performance and execution of the powers herein expressly granted.

          IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 5th day of March, 1997.



                              David Stanley
                              -------------------------------------------------
                              David Stanley

<PAGE>


                             DIGI INTERNATIONAL INC.

                                Power of Attorney
                           of Director and/or Officer


          The undersigned director and/or officer of Digi International Inc., a
Delaware corporation, does hereby make, constitute and appoint Jerry A. Dusa and
Jonathon E. Killmer, and either of them, the undersigned's true and lawful
attorneys-in-fact, with power of substitution, for the undersigned and in the
undersigned's name, place and stead, to sign and affix the undersigned's name as
such director and/or officer of said Corporation to a Registration Statement or
Registration Statements, on Form S-8 or other applicable form, and all
amendments, including post-effective amendments, thereto, to be filed by said
Corporation with the Securities and Exchange Commission, Washington, D.C., in
connection with the registration under the Securities Act of 1933, as amended,
of shares of Common Stock of said Corporation authorized for issuance under said
Corporation's Stock Option Plan as Amended and Restated, and to file the same,
with all exhibits thereto and other supporting documents, with said Commission,
granting unto said attorneys-in-fact, and either of them, full power and
authority to do and perform any and all acts necessary or incidental to the
performance and execution of the powers herein expressly granted.

          IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 6th day of March, 1997.



                              John P. Schinas
                              -------------------------------------------------
                              John P. Schinas

<PAGE>


                             DIGI INTERNATIONAL INC.

                                Power of Attorney
                           of Director and/or Officer


          The undersigned director and/or officer of Digi International Inc., a
Delaware corporation, does hereby make, constitute and appoint Jerry A. Dusa and
Jonathon E. Killmer, and either of them, the undersigned's true and lawful
attorneys-in-fact, with power of substitution, for the undersigned and in the
undersigned's name, place and stead, to sign and affix the undersigned's name as
such director and/or officer of said Corporation to a Registration Statement or
Registration Statements, on Form S-8 or other applicable form, and all
amendments, including post-effective amendments, thereto, to be filed by said
Corporation with the Securities and Exchange Commission, Washington, D.C., in
connection with the registration under the Securities Act of 1933, as amended,
of shares of Common Stock of said Corporation authorized for issuance under said
Corporation's Stock Option Plan as Amended and Restated, and to file the same,
with all exhibits thereto and other supporting documents, with said Commission,
granting unto said attorneys-in-fact, and either of them, full power and
authority to do and perform any and all acts necessary or incidental to the
performance and execution of the powers herein expressly granted.

          IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 6th day of March, 1997.



                              Richard E. Eichhorn
                              -------------------------------------------------
                              Richard E. Eichhorn

<PAGE>


                             DIGI INTERNATIONAL INC.

                                Power of Attorney
                           of Director and/or Officer


          The undersigned director and/or officer of Digi International Inc., a
Delaware corporation, does hereby make, constitute and appoint Jerry A. Dusa and
Jonathon E. Killmer, and either of them, the undersigned's true and lawful
attorneys-in-fact, with power of substitution, for the undersigned and in the
undersigned's name, place and stead, to sign and affix the undersigned's name as
such director and/or officer of said Corporation to a Registration Statement or
Registration Statements, on Form S-8 or other applicable form, and all
amendments, including post-effective amendments, thereto, to be filed by said
Corporation with the Securities and Exchange Commission, Washington, D.C., in
connection with the registration under the Securities Act of 1933, as amended,
of shares of Common Stock of said Corporation authorized for issuance under said
Corporation's Stock Option Plan as Amended and Restated, and to file the same,
with all exhibits thereto and other supporting documents, with said Commission,
granting unto said attorneys-in-fact, and either of them, full power and
authority to do and perform any and all acts necessary or incidental to the
performance and execution of the powers herein expressly granted.

          IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 6th day of March, 1997.



                              Mykola Moroz
                              -------------------------------------------------
                              Mykola Moroz



