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.

SPDIF1

GND

GND

1

P4S533

SPDIF IN

+5V

SPDIF OUT

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

CHASSIS1

+5VSB MB

Chassis Signal GND

P4S533 Chassis Alarm Lead

ASUS P4S533 motherboard user guide

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