4-PORT USB HUB, 1,Man shape, 2,USB 1.1 and 2.0, 3,Compliance with windows, ... Compliance with windows,mac, OSPictures show:Desription:1.With 4 ports, Fully compliant with the Universal Serial Bus Specification version1 ... .1/2.0,2.supports transfer rate up ... 98/98SE/2000/Me/XP/Mac OS 9.1 or high/vista and so on6.Single chip ...