Asus P4T533-C - Manual (Page 51)

ASUS P4T533-C motherboard user guide 37
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.
P4T533-C
®
P4T533-C Internal Audio Connectors
MODEM
Modem-In
Ground
Modem-Out
Ground
CD1(Black) AUX (White)
Right Audio Channel
Left Audio Channel
Ground
Ground
P4T533-C
®
P4T533-C Chassis Alarm Lead
CHASSIS
+5VSB_MB Chassis Signal GND
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.