Asus P4T533-C ASUS P4T533-Cmotherboard user guide, 17. Chassis Open Alarm Lead (4-1pin CHASSIS), 16.Internal audio connectors (3 x 4-pinCD1, AUX, MODEM) (optional)

16.Internal audio connectors (3 x 4-pin CD1, AUX, MODEM) (optional)

These connectors allow you to receive stereo audio input from sound sources such as a CD-ROM, TV tuner, or MPEG card. The MODEM connector allows the onboard audio to interface with a voice modem card with a similar connector. It also allows the sharing of mono_in (such as a phone) and a mono_out (such as a speaker) between the audio and a voice modem card.

CD1(Black) AUX (White)		MODEM
	Left Audio Channel		Modem-In
	Ground		Ground
	Ground		Ground
	Right Audio Channel		Modem-Out

P4T533-C

P4T533-C Internal Audio Connectors

17. Chassis Open Alarm Lead (4-1 pin CHASSIS)

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.

CHASSIS

+5VSB MB Chassis Signal GND

P4T533-C

P4T533-C Chassis Alarm Lead

ASUS P4T533-C motherboard user guide 37