Western Digital 500GB My Passport Essential. Hard drive capacity: 500 GB, Hard drive rotational speed: 5400 RPM, Hard drive interface: USB 3.0. Colour of product: Black. Weight: 140 g, Width: 110 mm, Depth: 83 mm. Operating temperature range (T-T): 5 - 40 °C, Storage temperature range (T-T): -20 - 65 °C. Data transfer rate (max): 5000 Mbit/s, Operating temperature range (T-T): 32 - 104 °F