Add 4 usb 3 0 devices to your usb 3 0 active extension system pro supports super speed transfer rates of to 5gbps connect to either 43158 or 43157 to extend your usb 3 0 active extension system up to 18 28 or 38m plug and play no special software installation required backwards compatible with both usb 2 0 and usb 1 1 devices