Silicon Power 500GB Armor A50. Hard drive capacity: 500 GB, Hard drive interface: USB 2.0, Hard drive size: 63.5 mm (2.5 "). Colour of product: Black, Gold. Weight: 0.2 kg, Width: 133.8 mm, Depth: 78.3 mm. Operating temperature range (T-T): 5 - 55 °C, Storage temperature range (T-T): -40 - 70 °C. Data transfer rate (max): 480 Mbit/s, Interface type: USB 2.0 / 1.1, Power requirements: 5V