Asus P4S533 User Manual page 51

16. Digital audio connector (4-1 pin SPDIF1) (optional)
This connector connects an S/PDIF audio module that allows digital
instead of analog sound output. Connect one end of the audio cable to
the S/PDIF Out connector on the motherboard, and the other end to the
S/PDIF module.
The S/PDIF module is not included in the motherboard package.
P4S533
®
P4S533 Digital Audio Connector
17. Chassis Open Alarm Lead (4-1 pin CHASSIS1)
This lead is intended for a chassis that supports 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 prevents the system from booting up.
P4S533
®
P4S533 Chassis Alarm Lead
ASUS P4S533 motherboard user guide
SPDIF1
1
CHASSIS1
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