Hitachi DeskStar 7K1000.B - 1TB, Deskstar. Hard drive capacity: 1024 GB, Hard drive size: 88.9 mm (3.5 "), Hard drive rotational speed: 7200 RPM. Power consumption (standby): 5.2 W. Weight: 680 g, Height: 26.1 mm, Width: 101.6 mm. Operating temperature range (T-T): 0 - 60 °C, Storage temperature range (T-T): -40 - 70 °C, Operating relative humidity range: 8 - 90 %