HP WD 500GB 7.2k Hot-Pug SATA Hard Drive 622598-002 w Tray 459319-001 397377-014 500GB hot-plug SATA hard disk drive - 7200 RPM 3Gb/sec transfer rate Native Command Queuing (NCQ) 3.5-inch large form factor (LFF) Midline * Compatible Product; D2D2502i / DL160G6 / DL180G6 / DL320G6 / DL380G6 DL380G7