<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM BLACK BOX
CORPORATION'S FORM 10-Q FOR THE FISCAL QUARTER ENDED SEPTEMBER 30, 1998 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          MAR-31-1999
<PERIOD-START>                             JUL-01-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                           3,501
<SECURITIES>                                         0
<RECEIVABLES>                                   54,531
<ALLOWANCES>                                     3,302
<INVENTORY>                                     34,482
<CURRENT-ASSETS>                               101,280
<PP&E>                                          33,501
<DEPRECIATION>                                  16,828
<TOTAL-ASSETS>                                 212,211
<CURRENT-LIABILITIES>                           36,742
<BONDS>                                         16,894
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            17
<OTHER-SE>                                     148,805
<TOTAL-LIABILITY-AND-EQUITY>                   212,211
<SALES>                                         79,710
<TOTAL-REVENUES>                                79,710
<CGS>                                           40,982
<TOTAL-COSTS>                                   40,982
<OTHER-EXPENSES>                                    11
<LOSS-PROVISION>                                   333
<INTEREST-EXPENSE>                                 102
<INCOME-PRETAX>                                 14,408
<INCOME-TAX>                                     5,674
<INCOME-CONTINUING>                              8,734
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     8,734
<EPS-PRIMARY>                                     0.51
<EPS-DILUTED>                                     0.49