SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                     FORM 15

          Certification and Notice of Termination of Registration under
              Section 12(g) of the Securities Exchange Act of 1934
                      or Suspension of Duty to File Reports
                        Under Section 13 and 15(d) of the
                        Securities Exchange Act of 1934.

                        Commission File Number: 000-19856


                                  Xircom, Inc.
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             (Exact name of Registrant as specified in its charter)


                           2300 Corporate Center Drive
                         Thousand Oaks, California 91320
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   (Address, including zip code, of Registrant's principal executive offices)


                                 (805) 376-9300
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              (Registrant's telephone number, including area code)


                    Common Stock, par value $0.001 per share
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            (Title of each class of securities covered by this Form)

                                      None
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                   (Titles of all other classes of securities
                     for which a duty to file reports under
                         Section 13(a) or 15(d) remains)

         Please place an X in the box(es) to designate the appropriate rule
provision(s) relied upon to terminate or suspend the duty to file reports:

           Rule 12g-4(a)(1)(i)  [X]               Rule 12h-3(b)(1)(ii) [ ]
           Rule 12g-4(a)(1)(ii) [ ]               Rule 12h-3(b)(2)(i)  [ ]
           Rule 12g-4(a)(2)(i)  [ ]               Rule 12h-3(b)(2)(ii) [ ]
           Rule 12g-4(a)(2)(ii) [ ]               Rule 15d-6           [ ]
           Rule 12h-3(b)(1)(i)  [X]

         Approximate number of holders of record as of the certification or
notice date: 1.


         Pursuant to the requirements of the Securities Exchange Act of 1934,
Xircom, Inc. has caused this Certification/Notice to be signed on its behalf by
the undersigned duly authorized person.

                                        XIRCOM, INC.

March 13, 2001                          By: /s/ STEVEN F. DEGENNARO
                                            ----------------------------------
                                            Name: Steven F. DeGennaro
                                            Title: Chief Financial Officer























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