1.shell usb hub in 2 .0 2.Lower cost, fast delivery and good ... for color, pack, delivery etc. usb 2.0 hub 4 1: with 4 usb ports, supply up ... to 500mA per port2: USB2.0 version, backwards compatible with usb1.1 version3 ... power supply5:Supports up to 127 Hi-Speed devices6:Support data transfer rate to 1.5/12/480Mbps7: ... Date: one years(products) shell usb hub in usb 2.0