... transfer speed up to 480Mbps 3 CE,ROHS are available 4 OEM,ODM,LOGO are welcome usb hub1 USB2.0 Version ... ,Compatible with USB 1.12 4 ports ,and power up to 500mA each port3 Truly plug and play and hot swapping capability4 No Driver ... /20007 CE,ROHS are optional OEM,ODM,LOGO are welcome Brand new and best price 4 port usb hub