Western Digital Caviar Blue 160GB. Hard drive capacity: 160 GB, Hard drive size: 88.9 mm (3.5 "), Hard drive rotational speed: 7200 RPM. Power consumption (typical): 9.50 W, Power consumption (standby): 1.60 W. Weight: 0.6 kg, Height: 26.1 mm, Width: 101.6 mm. Operating temperature range (T-T): 5 - 55 °C, Storage temperature range (T-T): -40 - 65 °C, Operating relative humidity range: 5 - 95 %