Add four usb 20 ports to the back of your computer the usbplate4 4 port usb 20 slot plate adapter converts the usb pins on your motherboard into four usb a female ports enabling you to add usb connections to the back of your pc the usbplate4 is designed and constructed for maximum durability to ensure dependable performance check your motherboards manual for the usb pinout diagram the usbplate wiring scheme is redpower greensignal whitesignal blackground