Inter-Tech G-3500. Size: 88.9 mm (3.5 "), Hard drive interface: Serial ATA, Serial ATA II. Compatible operating systems: Windows 98/2000/ME/XP/Vista. Colour of product: Black. Dimensions (WxDxH): 110 x 30 x 190 mm, Weight: 0.42 kg. Power requirements: 5/12V