usb hub,usb flash drive,USB HUB 4 port hub USB 2.0 specification, compatible with USB1.1 Plug and Play, no software required usb hub,usb flash drive,USB HUB 4 port hub detailed information:1,4-Port USB HUB. 2,Support USB 2.0, the speed up to 480Mbps. 3,No driver required, plug and play. 4,LED light shows... usb hub,usb flash drive,USB HUB 4 port hub