Western Digital My Book Elite 1.5TB. Hard drive capacity: 1500 GB, Hard drive rotational speed: 7200 RPM, Hard drive interface: USB 2.0. Colour of product: Black. Weight: 1180 g, Width: 48 mm, Depth: 135 mm. Operating temperature range (T-T): 5 - 35 °C, Storage temperature range (T-T): -20 - 65 °C. Security algorithms supported: 256-bit encryption