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18. IEEE-1394 Header (8-pin IEEE1394_2) (Optional)
This header supports an IEEE-1394 serial connector cable set that mounts
to a standard expansion slot in the computer case. 1394-compliant internal
fixed disk drives may also be connected to these headers.
IEEE1394_2
P4S8X
®
P4S8X 1394 Headers
19. Chassis Open Alarm Lead (4-1 pin CHASSIS)
This lead is intended for a chassis designed to support intrusion detection.
The lead 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. Removing the jumper cap will prevent
the system from booting up.
CHASSIS
GND
P4S8X
Chassis Signal
+5VSB_MB
®
P4S8X Chassis Alarm Lead
36
Chapter 2: Hardware information
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