<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> SEP-30-2000
<CASH> 112,429
<SECURITIES> 0
<RECEIVABLES> 12,175
<ALLOWANCES> 370
<INVENTORY> 6,600
<CURRENT-ASSETS> 138,978
<PP&E> 9,195
<DEPRECIATION> 2,097
<TOTAL-ASSETS> 146,212
<CURRENT-LIABILITIES> 10,646
<BONDS> 0
0
0
<COMMON> 342
<OTHER-SE> 135,134
<TOTAL-LIABILITY-AND-EQUITY> 146,212
<SALES> 38,216
<TOTAL-REVENUES> 43,074
<CGS> 26,695
<TOTAL-COSTS> 26,729
<OTHER-EXPENSES> 30,863
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> (60)
<INCOME-PRETAX> (12,481)
<INCOME-TAX> 0
<INCOME-CONTINUING> (12,481)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (12,481)
<EPS-BASIC> (1.99)
<EPS-DILUTED> (1.99)
</TABLE>