The STC-C060 USB 2.0 9Pin Housing male to Motherboard USB 3.0 20pin Header Female cable features one USB 3.0 20pin Header Female connector and one Pitch 2.54mm 10pin Housing, providing a high-quality connection to USB 2.0 peripherals. The USB 2.0 9Pin Housing male to Motherboard USB 3.0 20-Pin Header Female cable Let your USB 3.0 20pin device connect to the USB 2.0 motherboard. This USB pin header cable by STC enables the connection of different USB 3.0 devices through the USB 2.0 pin header of your mainboard.