Freecom ToughDrive 2.5" Pro 40GB, ToughDrive Pro 2.5. Hard drive capacity: 40 GB, Hard drive rotational speed: 4200 RPM, Hard drive interface: USB 2.0. Weight: 0.175 kg, Width: 80 mm, Depth: 140 mm. Operating temperature range (T-T): 5 - 60 °C, Storage temperature range (T-T): -20 - 80 °C, Operating shock: 175 G. Average latency: 7.14 ms, Data transfer rate (max): 480 Mbit/s, Mean time between failures (MTBF): 50000 h. Package dimensions (WxDxH): 180 x 260 x 85 mm