Asus P2B-B User Manual page 34

III. INSTALLATION
22. Chassis Intrusion Sensor Lead (4-1 pin CHASIS)
This lead is for a chassis intrusion monitor or sensor. The sensor is triggered
when a high level signal is sent to the "chassis signal" lead. This occurs when a
panel switch or light detector is triggered. This function requires optional trig-
ger switches to be installed.
+5Volt (Power Supply Stand By)
Chassis Signal
Ground
P2B-B Chassis Open Alarm Lead
34 ASUS P2B-B User's Manual