Jou Jye Computer UB-102SU. Size: 88.9 mm (3.5 "), Hard drive interface: Serial ATA. Interface: USB 2.0. Compatible operating systems: Win 98SE/2000/ME/XP/Vista Mac OS (Classic and OS X). Colour of product: Black. Dimensions (WxDxH): 228 x 42 x 146 mm, Weight: 400 g