WESTERN DIGITAL CORPORATION INVESTOR INFORMATION SUMMARY Q4 FY2003

(All $ amounts in millions)


  Q4 FY02 Q1 FY03 Q2 FY03 Q3 FY03 Q4 FY03
REVENUE: $541 $583 $749 $706 $680
REVENUE BY CHANNEL:          
OEM 48% 52% 53% 53% 52%
DISTRIBUTORS 45% 41% 39% 39% 41%
RETAIL 7% 7% 8% 8% 7%
REVENUE BY GEOGRAPHY:          
AMERICAS 54% 48% 50% 48% 46%
EUROPE 29% 33% 31% 31% 26%
ASIA 17% 19% 19% 21% 28%
REVENUE CONCENTRATION:          
10 LARGEST CUSTOMERS 57% 55% 58% 55% 57%
HARD DRIVES UNITS (Millions): 8.0 8.6 10.3 10.3 10.5
WORLDWIDE HEADCOUNT: 9,550 10,003 10,829 10,958 11,508
ASSET MANAGEMENT:          
DSOs--AVERAGE 37 36 30 25 33
INVENTORY DETAIL:          
TOTAL          
  RAW $9 $7 $14 $13 $12
  WIP $10 $17 $19 $17 $20
  FINISHED GOODS $55 $68 $73 $81 $66
TOTAL INVENTORY, NET $73 $92 $106 $111 $98
INVENTORY TURNS 26 22 23 21 24*

* Reflects updated financials released on 8/25/03.