HP 713821-B21 900GB 10K SFF 6G Enterprise G9 Smart hard disk driveHP 900GB 6G SAS 10K SFF (2. 5 inch) SC Enterprise Hard Drive Model Number EG0900FBLSK, EG0900FBVFQ, EG0900JEHMB, EG0900FCVBL, EG0900FCHHV, EG0900FCSPN Spare 653971 001, 719429 001, 718681 001, 718308 B21, 716649 001 Option PN 652589 B21, 718159 001, 652589 S21 , 719424 B21, 716603 B21, 721692 B21 GPN 652566 004, 781514 004 ASSY PN 619286 004, 507129 018, 641552 004, 689287 004, 666355 004, 768788 003, 693569 004, 693569 008, 653569 004 Drive Model