The st4300u3c1 3 port usb 30 hub lets you add three usb 30 ports to your desktop or laptop as well as a combination usb fast charge or data port simultaneously providing you with both pc host connectivity and separate mobile device charging capability the usb 30 ports support data transfer rates up to 5 gbps and are backward compatible with usb 20 and 1x specifications for faster charging of your smartphone or tablet including the samsung galaxy note 101 galaxy s 5 nexus 7 nexus