MSI MS-5156 Manual page 37

Attach a power saving switch to JGS1. When the switch is pressed, the
system immediately goes into suspend mode. Press any key and the system
wakes up. JGL1 can be connected with LED to monitor the JGS1. This will lit
while the system is in suspend mode.
JGS1
JGL1
Note: To make JGS1 function, you must go to the BIOS power management
and enable it there.
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