Gigabyte GA-M55S-S3 user manual CI Chassis Intrusion, Case Open, Clrcmos Clear Cmos

18)CI (Chassis Intrusion, Case Open)

This 2-pin connector allows your system to detect if the chassis cover is removed. You can check the "Case Opened" status in BIOS Setup.

	Pin No.	Definition
	1	Signal
1	2	GND

19)CLR_CMOS (Clear CMOS)

You may clear the CMOS data to its default values by this header. To clear CMOS, temporarily short the two pins. Default doesn't include the jumper to avoid improper use of this header.

Open: Normal

Short: Clear CMOS

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- 27 - Hardware Installation