The Akyga® AK-CA-75 internal USB adapter is a necessary accessory if you have a motherboard with a higher standard of USB port than in your computer case panel. It allows you to connect a USB 2.0 9-pin USB port to a USB 3.0 19-pin socket of your motherboard. After connecting the converter, the USB 2.0 port from the motherboard continues to function as a USB 2.0 standard. Furthermore a 20 cm cable allows you to freely connect the adapter inside the PC case.