Jou Jye Computer JJ-22VB2. Size: 63.5 mm (2.5 "), Hard drive interface: Ultra-ATA/133. Interface: ATA66/100/133. Compatible operating systems: Win 98SE/2000/ME/XP/Vista Mac OS (Classic and OS X). Colour of product: Green, Silver. Dimensions (WxDxH): 135 x 16 x 81 mm