Amacom Datalocker Pro 750GB. Hard drive capacity: 750 GB, Hard drive rotational speed: 5400 RPM, Hard drive interface: USB 2.0. Colour of product: Grey. Weight: 256 g, Width: 76 mm, Depth: 120 mm. Operating temperature range (T-T): 5 - 55 °C, Operating shock: 350 G. Security algorithms supported: 128-bit WEP