Asus MEL - Manual (Page 32)

32 ASUS MEL User’s Manual
III. HARDWARE SETUP
27. 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 the optional
ASUS CIDB Chassis Sensor to be installed.
MEL Chassis Open Alarm Lead
+5VSB Chassis Signal Ground
The ASUS CIDB Chassis Sensor
The optional ASUS CIDB is a module for providing audio alarm and logging when
there is an intrusion into the chassis of a computer system. The module detects a chas-
sis intrusion by either light striking its photo sensor or by contact when its switch
connectors are shorted by chassis-mounted momentary toggle switches. An intrusion
memory function allows detection by BIOS and LDCM on the next bootup.
Connectors
III. H/W SETUP
Buzzer to sound the alarm
Photo sensor to detect intrusion by light
Intrusion memory
Photo sensor sensitivity adjustment
Chassis connector
extension cable
Battery for the memory
Connector to dock with the motherboard’s chassis connector
Two switch connectors to detect intrusion by chassis
mounted micro switches