Conceptronic CHD3DUB. Size: 88.9 mm (3.5 "), Hard drive interface: Serial ATA, Serial ATA II, Serial ATA III. Interface: USB 2.0, Cables included: USB. Compatible operating systems: Windows XP, Vista, 7. Colour of product: Black. Dimensions (WxDxH): 124 x 201 x 33 mm, Weight: 210 g, Width: 124 mm