MSI MS-6340 - Irda Infrared Module Connector: J4

CHAPTER 2 HARDWARE INSTALLATION
2-13
2.8 IrDA Infrared Module Connector: J4
The mainboard provides one infrared (J4) connector for IR modules. This
connector is for optional wireless transmitting and receiving infrared module.
You must configure the setting through the BIOS setup to use the IR
function.
VCC
NC
IRRX
GND
IRTX
1
J4