Asus P3-PE5 - Manual (Page 58)

4-10 Chapter 4: Motherboard info
8. Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module
that supports HD Audio standard.
We recommend that you connect a high-definition front panel audio
module to this connector to avail of the motherboard’s high-definition
audio capability.
9. Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface
(S/PDIF) port(s). Connect the S/PDIF module cable to this connector,
then install the module to a slot opening at the back of the system
chassis.
The S/PDIF module is purchased separately.
R
Digital Audio Connector
+5V SPDIFOUT GND
SPDIF_OUT
R
Azalia Analog Front Panel Connector
HP_HD
MIC2_L
HP_R HP_L
MIC2_JD
Jack_Sense
MIC2_R
PRESENSE# AGND
AAFP