Asus P4C800-E - Manual (Page 58)

2-32 Chapter 2: Hardware information
16. Front panel audio connector (10-1 pin FP_AUDIO)
This is an interface for the Intel front panel audio cable that allow
convenient connection and control of audio devices.
By default, the pins labeled LINE OUT_R/BLINE_OUT_R and the pins
LINE OUT_L/BLINE_OUT_L are shorted with jumper caps. Remove
the caps only when you are connecting the front panel audio cable.
17. Serial port 2 connector (10-1 pin COM2)
This connector accommodates a second serial port using an optional
serial port bracket. Connect the bracket cable to this connector then
install the bracket into a slot opening at the back of the system chassis.
The serial port bracket (COM2) is purchased separately.
P4C800-E
®
P4C800-E Front Panel Audio Connector
FP_AUDIO
BLINE_OUT_L
MIC2
Line out_R Line out_L
BLINE_OUT_R
NC
MICPWR
+5V
A
AGND
P4C800-E
®
P4C800-E Serial COM2 Bracket
PIN 1
COM2