*USB2.0 4-port HUB *The most tiny,fashionable USB2.0HUB *Connect up to four USB2.0(orUSB1.1)devices *Speed supported:480Mbps,12Mbps and1.5Mbps *Hot swappable,connect and remove peripherals and time *Usb both USB connectors or power cable to increase power for your conneted epuipment from 500mA to1000mA *iMac system or 1BM PC with USB host connector *Windows98/Me/2000XP and Mac Os9.0 or above