Jou Jye Computer JJ-22VSUES. Size: 63.5 mm (2.5 "), Hard drive interface: Serial ATA. Interface: USB, eSATA. Compatible operating systems: Win 98SE/2000/ME/XP/Vista Mac OS (Classic and OS X). Colour of product: Black, Silver. Dimensions (WxDxH): 135 x 16 x 81 mm, Weight: 0.2 kg