Silicon Power Armor A80. Hard drive capacity: 500 GB, Hard drive size: 63.5 mm (2.5 "). Colour of product: Blue. Weight: 270 g, Width: 139.45 mm, Depth: 94 mm. Operating temperature range (T-T): 5 - 55 °C, Storage temperature range (T-T): -40 - 70 °C. Data transfer rate: 5 Gbit/s, Hard disk transfer rate: 480 Mbit/s, Power requirements: DC5V