iTEC USB3HDDOCK. Size: 88.9 mm (3.5 "), Hard drive interface: Serial ATA. Interface: USB. Compatible operating systems: Windows 2000 Windows XP Windows Vista 32/64-bit Windows 7 32/64-bit, Minimum system requirements: USB. Colour of product: Grey. Dimensions (WxDxH): 130 x 95 x 70 mm, Weight: 0.216 kg, Width: 130 mm