Asus A7V266-M - Manual (Page 47)

ASUS A7V266-M motherboard user guide 35
18) Chassis Open Alarm Lead (4 pin CHASSIS)
This lead is for a chassis designed for chassis intrusion detection. This
requires an external detection mechanism such as a chassis intrusion monitor/
sensor or microswitch. When any chassis component is removed, the sensor
is triggered and a high-level signal is sent to this lead to record a chassis
intrusion event.The event is then be processed by software such as LDCM.
When not using the chassis intrusion lead, place a jumper cap over the pins
to close the circuit.
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A7V266-M
A7V266-M Chassis Open Alarm Lead
CHASSIS
+5VSB_MB Chassis Signal GND
1