Western Digital Caviar Black 640GB Serial ATA II hard disk d

Western Digital Caviar Black 640GB. Hard drive capacity: 640 GB, Hard drive interface: Serial ATA II, Hard drive speed: 7200 RPM. Power consumption (standby): 1 W, Power consumption (PowerSave): 7.8 W, Power consumption (off): 1 W. Width: 4" (101.6 mm), Height: 1" (25.4 mm), Depth: 5.79" (147 mm). Power requirements: 12VDC ±10%, Compatible operating systems: Windows 2000/XP/Vista