EXHIBIT 24

                             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 Joseph T.
Dunsmore and Subramanian Krishnan, 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 an
Annual Report on Form 10-K or other applicable form, and all amendments thereto,
to be filed by said Corporation with the Securities and Exchange Commission,
Washington, D.C., under the Securities Act of 1934, as amended, 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 22nd day of November 2004.

                                            /s/ Kenneth E. Millard
                                            ------------------------------------
                                            Kenneth E. Millard



                             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 Joseph T.
Dunsmore and Subramanian Krishnan, 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 an
Annual Report on Form 10-K or other applicable form, and all amendments thereto,
to be filed by said Corporation with the Securities and Exchange Commission,
Washington, D.C., under the Securities Act of 1934, as amended, 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 22nd day of November 2004.

                                            /s/ Mykola Moroz
                                            ------------------------------------
                                            Mykola Moroz



                             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 Joseph T.
Dunsmore and Subramanian Krishnan, 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 an
Annual Report on Form 10-K or other applicable form, and all amendments thereto,
to be filed by said Corporation with the Securities and Exchange Commission,
Washington, D.C., under the Securities Act of 1934, as amended, 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 22nd day of November 2004

                                            /s/ Guy C. Jackson
                                            ------------------------------------
                                            Guy C. Jackson




                             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 Joseph T.
Dunsmore and Subramanian Krishnan, 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 an
Annual Report on Form 10-K or other applicable form, and all amendments thereto,
to be filed by said Corporation with the Securities and Exchange Commission,
Washington, D.C., under the Securities Act of 1934, as amended, 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 22nd day of November 2004.

                                            /s/ Bradley J. Williams
                                            ------------------------------------
                                            Bradley J. Williams