Asus P4-P5G41 - Manual (Page 38)

3-8 Chapter 3: Motherboard info
7. Digital audio connectors (4-1 pin SPDIF_OUT, SPDIF_OUT1)
These connectors are for additional Sony/Philips Digital Interface (S/PDIF)
ports. Connect the S/PDIF Out module cables to these connectors, then
install the modules to slots opening at the back of the system chassis.
P5Q8L Digital Audio Connectors
P5Q8L
SPDIF_OUT
+5
V
SPDIFOU
T
GND
SPDIF_OUT1
+5
V
SPDIFOU
T
GND
8. Chassis intrusion connector (4-1 pin CHASSIS)
This connector is for a chassis-mounted intrusion detection sensor or switch.
Connect one end of the chassis intrusion sensor or switch cable to this
connector. The chassis intrusion sensor or switch sends a high-level signal to
this connector when a chassis component is removed or replaced. The signal
is then generated as a chassis intrusion event.
By default, the pin labeled “Chassis Signal” and “Ground” are shorted with
a jumper cap. Remove the jumper caps only when you intend to use the
chassis intrusion detection feature.
P5Q8L Chassis Intrusion Connector
P5Q8L
+5VSB_M
B
Chassis Signal GN
D
CHASSIS