Hitachi Deskstar E7K1000 1TB, Deskstar. Hard drive capacity: 1000 GB, Hard drive size: 88.9 mm (3.5 "), Hard drive rotational speed: 7200 RPM. Operating temperature range (T-T): 0 - 60 °C, Operating relative humidity range: 8 - 90 %, Operating shock: 70 G