Toshiba MK2565GSX. Hard drive capacity: 250 GB, Hard drive size: 63.5 mm (2.5 "), Hard drive rotational speed: 5400 RPM. Power consumption (read): 1.5 W, Power consumption (write): 1.5 W, Power consumption (idle): 0.75 W. Weight: 97 g, Height: 9.5 mm, Width: 69.85 mm. Operating temperature range (T-T): 5 - 55 °C, Storage temperature range (T-T): -40 - 60 °C, Operating relative humidity range: 8 - 90 %