AMD GA-K8N51GMF - Manual (Page 23)

Hardware Installation - 23 -
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12) POWER_LED
The PWR_LED connector is connected with the system power indicator to indicate whether the
system is on/off. It will blink when the system enters suspend mode.
Pin No. Definition
1 MPD+
2 MPD-
3 MPD-
1
13) 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