Seagate Barracuda Pro 3.5". Hard drive capacity: 6000 GB, Hard drive interface: Serial ATA III, Hard drive speed: 7200 RPM. Power consumption (typical): 9 W, Power consumption (standby): 0.6 W, Power consumption (idle): 7.2 W. Width: 4" (101.6 mm), Height: 1.03" (26.1 mm), Depth: 5.79" (147 mm)