Prestigio PDS1BLACK320. Hard drive capacity: 320 GB, Hard drive interface: USB 2.0, Hard drive size: 63.5 mm (2.5 "). Colour of product: Black. Weight: 0.19 kg, Width: 80 mm, Depth: 126 mm. Minimum system requirements: Mac OS Microsoft Windows 2000/98SE/Me/XP/Vista/7, Drive device, transfer rate: 480 MB/s