ioSafe 1TB Rugged Portable. Hard drive capacity: 1024 GB, Hard drive rotational speed: 5400 RPM, Hard drive interface: USB 3.0. Data transfer rate: 5000 Mbit/s. Colour of product: Silver. Power consumption (typical): 5 W. Operating temperature range (T-T): 0 - 35 °C, Storage temperature range (T-T): -40 - 65 °C, Operating relative humidity range: 5 - 80 %