<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM XIRCOM,
INC.'S FORMS 10-Q FOR THE QUARTERLY PERIODS ENDED DECEMBER 31, 1996, JUNE 30,
1996, AND MARCH 31, 1996, AND THE FORM 10-K FOR THE FISCAL YEAR ENDED SEPTEMBER
30, 1996, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
THE INTERIM STATEMENTS FOR THE QUARTERLY PERIODS ENDED DECEMBER 31, 1996, JUNE
30, 1996, AND MARCH 31, 1996, AND THE FINANCIAL STATEMENTS FOR THE FISCAL YEAR
ENDED SEPTEMBER 30, 1996 HAVE BEEN RESTATED TO REFLECT THE HISTORICAL FINANCIAL
POSITION AND RESULTS OF OPERATIONS AS ADJUSTED FOR THE RECLASSIFICATION OF
NETACCESS, INC. AS DISCONTINUED OPERATIONS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   12-MOS                   9-MOS                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-1997             SEP-30-1996             SEP-30-1996             SEP-30-1996
<PERIOD-START>                              OCT-1-1996             OCT-01-1995             OCT-01-1995              OCT-1-1995
<PERIOD-END>                               DEC-31-1996             SEP-30-1996             JUN-30-1996             MAR-31-1996
<CASH>                                          24,035                  21,377                  16,313                  15,260
<SECURITIES>                                         0                       0                       0                       0
<RECEIVABLES>                                   41,763                  28,440                  23,092                  27,045
<ALLOWANCES>                                     3,324                   3,434                   4,518                   7,068
<INVENTORY>                                     17,317                  13,771                  21,395                  22,390
<CURRENT-ASSETS>                                90,764                  71,545                  67,069                  67,934
<PP&E>                                          36,844                  34,467                  35,942                  34,684
<DEPRECIATION>                                  17,959                  16,331                  17,148                  15,481
<TOTAL-ASSETS>                                 128,834                 107,201                 101,131                 100,179
<CURRENT-LIABILITIES>                           50,106                  36,834                  38,129                  42,776
<BONDS>                                              0                       0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                            20                      20                      19                      19
<OTHER-SE>                                      73,629                  65,583                  60,766                  56,009
<TOTAL-LIABILITY-AND-EQUITY>                   128,834                 107,201                 101,131                 100,179
<SALES>                                         56,309                 166,757                 117,702                  73,783
<TOTAL-REVENUES>                                56,309                 166,757                 117,702                  73,783
<CGS>                                           35,493                 107,437                  76,921                  48,306
<TOTAL-COSTS>                                   35,493                 107,437                  76,921                  48,306
<OTHER-EXPENSES>                                14,952                  50,308                  35,683                  23,653
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                                   0                       0                       0                       0
<INCOME-PRETAX>                                  5,916                   7,674                   4,012                   1,193
<INCOME-TAX>                                     1,775                   2,506                   1,333                     430
<INCOME-CONTINUING>                              4,141                   5,168                   2,679                     763
<DISCONTINUED>                                     316                     784                     469                   (150)
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                     4,457                   5,952                   3,148                     613
<EPS-PRIMARY>                                      .22                     .30                     .16                     .03
<EPS-DILUTED>                                      .22                     .30                     .16                     .03
        

</TABLE>