Usb 3 0 has a bandwidth of up to 5 gbits this is multiple times the transfer rate of usb 2 0 with this hub you can use the fast usb 3 0 for seven devices usb 3 0 is downwards compatible it works with usb 2 0 cables and devices with their transfer rates the usb charging ports 5 v 2 4 a meet the new usb battery charging specification bc 1 2 and they can charge all the corresponding mobile devices such as smartphones tablets digital cameras and rechargeable batteries i e po