Western Digital HDScorpio 80GB. Hard drive capacity: 80 GB, Hard drive size: 63.5 mm (2.5 "), Hard drive rotational speed: 5400 RPM. Power consumption (typical): 2.5 W. Weight: 117 g. Operating temperature range (T-T): 5 - 60 °C, Storage temperature range (T-T): -40 - 65 °C, Operating relative humidity range: 5 - 95 %