Samsung M2 Portable, 640GB. Hard drive capacity: 640 GB, Hard drive interface: USB 3.0, Hard drive size: 63.5 mm (2.5 "). Colour of product: Orange. Weight: 155 g, Width: 81.9 mm, Depth: 110.6 mm. Operating temperature range (T-T): 5 - 40 °C, Storage temperature range (T-T): -20 - 65 °C. Cables included: USB