How do I enable and reset the chassis intrusion detection feature?
To enable chassis intrusion detection, connect the chassis intrusion switch to the JCI1 connector, then go to BIOS > SETTINGS > Security > Chassis Intrusion Configuration and set Chassis Intrusion to Enabled, then press F10 to save. To reset the warning after a chassis intrusion event, go back to BIOS > SETTINGS > Security > Chassis Intrusion Configuration, set Chassis Intrusion to Reset, and press F10 to save and exit. (Page 35)
From the official Msi B550-A Pro Motherboard manual, page 35
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