EXHIBIT 16.1 Office of the Chief Accountant Securities and Exchange Commission 450 Fifth Street, N,W. Washington, District of Columbia 20549 February 21, 2001 Dear Sir/Madam, We have read Item 4 included in the Form 8-K dated February 16, 2001, of Westell Technologies, Inc. to be filed with the Securities and Exchange Commission and are in agreement with the statements contained therein. Very truly yours, Arthur Andersen LLP By Jeffery J. Robinson JKH Copy to: Mr. Nick Hindman, Westell Technologies, Inc.