HGST 0G00274. Controller type: Oxford 936. Size: 88.9 mm (3.5 "), Hard drive interface: Serial ATA II, FireWire 400, FireWire 800, eSATA. Compatible operating systems: Mac OSX 10.3.x Windows 2000, Windows XP, Windows Vista. Colour of product: Silver. Dimensions (WxDxH): 130 x 235 x 73 mm, Weight: 1.75 kg