Startechcom usb hubs and charging stations startechcom st4300u3c3 the st4300u3c3 usb 30 hub from startechcom 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 connectionthe 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 spe