Gigabyte GA-8I945P-G-RH User Manual page 26

15) 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.
16) CLR_CMOS (Clear CMOS)
You may clear the CMOS data to its default values by this jumper. To clear CMOS, temporarily
short 1-2 pin. Default doesn't include the "Shunter" to prevent from improper use this jumper.
GA-8I945P-G-RH Motherboard
Pin No.
1
1
2
1
Open: Normal
1
Short: Clear CMOS
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Definition
Signal
GND