Western Digital AV-GP 1.0TB. Hard drive capacity: 1000 GB, Hard drive interface: Serial ATA II, Hard drive speed: 7200 RPM. Power consumption (standby): 0.7 W, Start-up current: 1.603 A. Width: 4" (101.6 mm), Height: 1.03" (26.1 mm), Depth: 5.79" (147 mm). Power requirements: 12VDC/5VDC