Asus Motherboard P5ND2 - Manual (Page 44)

1-32 Chapter 1: Product introduction
9. 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 pins 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.
P5ND2
R
P5ND2 Chassis Intrusion Connector
CHASSIS
+5VSB_MB Chassis Signal GN
D
(Default)
10. Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface
(S/PDIF) port(s). Connect the S/PDIF module cable to this connector,
then install the module to a slot opening at the back of the system
chassis.
The S/PDIF module is purchased separately.
P5ND2
R
P5ND2 Digital Audio Connector
+5V SPDIFOUT GND
SPDIF_OUT