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3. HARDWARE SETUP
22) Serial IR (SIR) (5-1 pin) and Consumer IR (CIR) (5-pin) Connectors
This connector supports an optional wireless transmitting and receiving infrared
module. This module mounts to a small opening on system cases that support
this feature. You must also configure the setting through UART2 Use Infrared
(see 4.4.2 I/O Device Configuration) to select whether UART2 is directed for
use with COM2 or IrDA. Use the five pins as shown in Back View and connect
a ribbon cable from the module to the motherboard's SIR connector according
to the pin definitions. An optional consumer infrared (CIR) set connects to the
CIR and SIR connectors simultaneously for both wireless transmitting and re-
mote control functions through one external infrared module. Wake On PS2
KB/Mouse in 4.5.1 Power Up Control must be Enabled in order to use Con-
sumer Infrared (CIR) power up.
1
P3W-E
®
P3W-E Infrared Module Connector
23) Chassis Intrusion Alarm Connector (4-1 pin ACHA)
This connector is for a chassis designed for chassis intrusion detection. After-
market toggle switches may also be installed to the chassis panel or on any
removable components. Two wires should be available from the chassis to con-
nect to this lead. When any chassis component is removed, the contact should
open and the motherboard will record a chassis intrusion event. If the chassis
intrusion lead is not used, a jumper cap must be placed over pins 2 and 3 to
prevent unnecessary power loss.
1
P3W-E
®
P3W-E Chassis Open Alarm Lead
44
1
0
1
0
1
0
1
0
1
ASUS P3W-E User's Manual
Standard Infrared (SIR)
Front View
SIR
CIR
ACHA
Back View
+5V
IRTX
GND
(NC)
IRRX
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