HP 652572-S21 450GB 6G 10K SFF G8 G9 Smart Hard DriveHP 450GB 6G SAS 10K SFF (2. 5 inch) G8 G9 Smart Hard Drive Model Number : EG0450FCSPK, EG0450FBDSQ, EG0450FBLSF, EG0450FBDBT, EG0450FBVFM, EG0450FCHHT, EG0450FCVBH Spare : 581310 001, 653956 001 Option PN : 581284 B21, 652572 B21 GPN : 507129 012, 507129 011 SmartBuy Part : 652572 S21 ASSY PN : 597609 002, 599476 002, 619286 002, 666355 002, 641552 002,693569 006, 693569 002 Drive Model ST9450405SS AL13SEB450 RPM: 10K For Servers G8 and G9 HP