For extending a micro usb 20 cable or a usb device with an integrated micro cable eg a usb charger usb battery pack usb otg hubcard reader etc high speed data transfer of up to 480 mbps gold plated plug with low contact resistance for secure signal transmission double shielding for good reduction of electromagnetic interference the inner conductor is made of copper which ensures best transmission properties sturdy plugs and moulded strain reliefs high mechanical resistance suitable and tested