Most current motherboards have only one USB 3.0 pin header soldered. Who, for example. A housing used with built-in USB 3.0 ports in the housing and 19-pin. Connection is so these occupy a pin header on the board. If now still eg. A card reader panel with USB 3.0 functionality and 19-pol. Be used jack adapter required. Eben provides such agreements are the next flights adapter cable InLine represents. Inge Wohnter quality at reasonable price performs the adapter to the task with me in two PC cases without hesitation. The dimensions given here are not right: The adapter cable is approximately 40 cm long.