Western Digital My Passport Essential 160GB. Hard drive capacity: 160 GB, Hard drive rotational speed: 5400 RPM, Hard drive interface: USB 2.0. Weight: 0.1048 g. Operating temperature range (T-T): 5 - 40 °C, Storage temperature range (T-T): -20 - 65 °C. Cables included: USB 2.0. Hard disk transfer rate: 480 Mbit/s