<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   YEAR                   YEAR                   YEAR
<FISCAL-YEAR-END>                          MAR-31-1998             MAR-31-1997             MAR-31-1996
<PERIOD-START>                             APR-01-1997             APR-01-1996             APR-01-1995
<PERIOD-END>                               MAR-31-1998             MAR-31-1997             MAR-31-1996
<CASH>                                           1,815                   9,494                       1
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                   22,383                  12,730                  10,159
<ALLOWANCES>                                       511                     319                     662
<INVENTORY>                                     22,473                  12,627                   5,317
<CURRENT-ASSETS>                                49,611                  35,206                  15,548
<PP&E>                                           8,368                   4,563                   2,541
<DEPRECIATION>                                   2,950                   1,844                   1,341
<TOTAL-ASSETS>                                  55,029                  37,925                  16,748
<CURRENT-LIABILITIES>                           28,490                  19,312                  26,861
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                             1                       1                       1
<OTHER-SE>                                      16,956                   8,864                (10,114)
<TOTAL-LIABILITY-AND-EQUITY>                    55,029                  37,925                  16,748
<SALES>                                         97,627                  60,028                  29,410
<TOTAL-REVENUES>                                97,627                  60,028                  29,410
<CGS>                                           61,297                  35,642                  18,863
<TOTAL-COSTS>                                   61,297                  35,642                  18,863
<OTHER-EXPENSES>                                24,629                  16,148                   9,789
<LOSS-PROVISION>                                   320                     253                      38
<INTEREST-EXPENSE>                                 992                   1,707                   1,861
<INCOME-PRETAX>                                 10,709                   6,531                 (1,103)
<INCOME-TAX>                                     2,615                   2,600                      86
<INCOME-CONTINUING>                              8,094                   3,931                 (1,189)
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     8,094                   3,931                 (1,189)
<EPS-PRIMARY>                                     0.84                    0.48                  (0.15)<F1>
<EPS-DILUTED>                                     0.83                    0.48                  (0.15)
<FN>
<F1> Represents BASIC EPS
</FN>
        

</TABLE>