iTEC MYSAFEUSB3-320. Hard drive capacity: 320 GB, Hard drive interface: USB 3.0, Hard drive size: 63.5 mm (2.5 "). Colour of product: Black. Operating temperature range (T-T): 5 - 35 °C, Operating relative humidity range: 20 - 80 %. Data transfer rate (max): 5000 Mbit/s, Supported data transfer rates: 1.5/12/480Mbps