Western Digital AV 500GB Serial ATA II hard disk drive

Western Digital AV. Hard drive capacity: 500 GB, Hard drive interface: Serial ATA II, Hard drive speed: Variable. Power consumption (standby): 0.8 W, Power consumption (read): 4.1 W, Power consumption (write): 4.1 W. Width: 4" (101.6 mm), Height: 1.03" (26.1 mm), Depth: 5.79" (147 mm)