Enermax Jazz 3.5". Size: 88.9 mm (3.5 "), Hard drive interface: Serial ATA II. Interface: eSATA / USB 2.0. Compatible operating systems: Windows 98SE / ME /2000 / XP / Vista Mac OS 8.6 +. Colour of product: Black. Dimensions (WxDxH): 124 x 220 x 43 mm, Weight: 0.49 kg