MSI MS-6380 - Manual (Page 34)

Chapter 2
2-18
Chassis Intrusion Switch Connector: J3
This connector is connected to a 2-pin chassis switch. If the chassis is
opened, the switch will be short. The system will record this status and show
a warning message on the screen. To clear the warning, you must enter the
BIOS utility and clear the record.
J3
IrDA Infrared Module Connector: J7
This connector allows you to connect to an IrDA Infrared module. You
must configure the setting through the BIOS setup to use the IR function.
J7
1
1 VCC
2 NC
3 IRRX
4 GND
5 IRTX
Pin Signal