Asus Motherboard AP130-E1 - Manual (Page 43)

ASUS PSCH-L motherboard 2-23
6. Chassis intrusion connector (4-1 pin CHASS1)
This lead is for a chassis designed with intrusion detection feature.
This requires an external detection mechanism such as a chassis
intrusion sensor or microswitch. When you remove any chassis
component, the sensor triggers and sends a high-level signal to this
lead to record a chassis intrusion event.
By default, the pins labeled “Chassis Signal” and “Ground” are shorted
with a jumper cap. If you wish to use the chassis intrusion detection
feature, remove the jumper cap from the pins.
7. Power supply thermal connector (2-pin THERMAL_AUX)
If your power supply has a thermal monitoring feature, connect its
thermal sensor cable to this connector.
PSCH-L
®
PSCH-L Chassis Intrusion Connector
CHASS1
+5VSB_MB Chassis Signal GND
(Default)
PSCH-L
®
PSCH-L Thermal Connector
THERMAL_AUX
GND
VREF