USB 2.0 4-port Mini hub Slim design with hidden connector, ideal for laptop users Supporting both full speed (12Mbps) and low speed (1.5Mbps) USB bus-powered, no external power Dimensions(WxHxL): 90*38*12mm System Support: Windows98/SE/ME/2000/XP, Mac OS 8.6 or higher, Linux Kernel 2.4 or higher