EXHIBIT 23 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-23857, 333-57869, 333-53366, 333-55488, 333-82674, 333-82678, 333-82668, 333-82670, 333-82672) of Digi International Inc. of our report dated November 2, 2004 relating to the financial statements and financial statement schedule, which appears in this Form 10-K. /s/ Pricewaterhouse Coopers LLP PricewaterhouseCoopers LLP Minneapolis, Minnesota November 29, 2004