Hitachi SimpleDrive Rev. 3 500GB, Deskstar. Hard drive capacity: 500 GB, Hard drive interface: USB 2.0, Hard drive size: 88.9 mm (3.5 "). Colour of product: Black, Silver. Input voltage: 12 V. Weight: 1000 g, Width: 61.9 mm, Depth: 120.6 mm. Connector(s): USB Mini-B 4-pin