Exceptional performance with this high speed usb20 4 port active hub with over current protection look at these features key specifications special features supports data transfer rate at 15mbps12mbps supports up to 127 high speed devices compatible with usb 11 individual port with overcurrent protection provides up to 500ma per port sufficient for diverse devices power adapter included 5v 25a output plug and play installation four downstream ports with usb a female connectors one u