MSI MS-5184 User Manual page 32

The mainboard provides a 5-pin infrared connector(JIR1) for IR module.
This connector is for optional wireless transmitting and receiving infrared
module. If you want to use this function, you must configure the setting
through BIOS setup.
IRTX
GND
IRRX
NC
VCC
1
JIR1
2-28