The st4300u3c3 usb 30 hub enables simultaneous data hub and usb charging functionality by adding three dedicated usb charge ports as well as four usb 30 data ports for a total of seven ports all through a single usb 30 host connection the usb hub ports are compliant with the superspeed usb 30 specification offering data transfer rates up to 5 gbps and are backward compatible with usb 20 and 1x specifications this externally powered usb hub also integrates 3 dedicated usb charging po