Usb Connectors - MSI 815 PRO Manual

2.15 USB Connectors

The mainboard provides a UHCI(Universal Host Controller Interface)
Universal Serial Bus root for attaching USB devices like: keyboard, mouse
and other USB devices. You can plug the USB device directly to this
connector.
USB Port 1
USB Port 2
1 2 3 4
PIN
1
2
3
4
SIGNAL
VCC
-Data
+Data
GND
2-20