Buffalo DriveStation external Hard Drive - 250GB. Hard drive capacity: 250 GB, Hard drive rotational speed: 7200 RPM. Colour of product: Black, Grey. Weight: 1300 g. Operating temperature range (T-T): 0 - 35 °C. Data transfer rate (max): 480 Mbit/s, Power requirements: AC 100 - 240V, 50/60 Hz