Gigabyte GA-M55S-S3 Manual - Page 27

CLR_CMOS Clear CMOS, CI Chassis Intrusion, Case Open

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English 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 - 27 - Hardware Installation

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Hardware Installation
- 27 -
English
Open: Normal
Short: Clear CMOS
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.
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
2
GND
1