User`s manual

Chapter 2
2-18
USB Front Connector: USB3/USB4
The mainboard provides 2 front USB pin-header connectors, allowing up to
four USB connections in addition to the 2 standard USB ports.
Pin Description Pin Description
1 VCC 2 VCC
3 USB0- 4 USB1-
5 USB0+ 6 USB1+
7 GND 8 GND
9 NC (Key) 10 GND
USB4 Pin Definition
USB3
1 9
2 10
USB4
1 9
2 10
Pin Description Pin Description
1 VCC 2 GND
3 USB0- 4 GND
5 USB0+ 6 USB1+
7 GND 8 USB1-
9 GND 10 VCC
USB3 Pin Definition
NOTE: The bundled 9-pin cable is for use with USB4 only. Incorrect use will
cause damage.
If installing additional USB cables other than those bundled, please be sure to
follow the pin definitions above for USB3 (10-pin) and USB4 (9-pin).
Key