Premiertek HD-316-U2S-2TB. Size: 88.9 mm (3.5 "), Hard drive interface: Serial ATA, Serial ATA II. Cables included: AC, USB. Compatible operating systems: Window ME/2000/XP/Vista/7, Linux 2.4.1.0, MAC OS 9.x. Colour of product: Black. Weight: 0.355 kg, Width: 31 mm, Depth: 182 mm