HGST Ultrastar 15K600, 450GB, Ultrastar. Hard drive capacity: 450 GB, Hard drive interface: SAS, Hard drive speed: 15000 RPM. Power consumption (typical): 14.4 W, Power consumption (idle): 9.2 W. Width: 4" (101.6 mm), Height: 1.02" (25.8 mm), Depth: 5.76" (146.2 mm)