Hitachi Touro Desk Pro 3TB. Hard drive capacity: 3000 GB, Hard drive interface: USB 3.0, USB 2.0. USB data transfer rates: 480, 5000 Mbit/s. Colour of product: Black, Silver. Windows operating systems supported: Windows XP, Windows Vista, Windows 7, Y, Mac operating systems supported: Mac OS X 10.5 Leopard, Y. Weight: 970 g, Width: 117 mm, Depth: 60 mm