Elitegroup Computer Systems K7AMA2 Manual page 24

Refer to the following for information on connecting the mainboard's optional
devices:
J2: Front panel MIC/line-out
This header allows the user to install auxiliary front-oriented microphone and
line-out ports for easier access.
Pin
1 FMICIN
3 MIC_BIAS
5 SPKOUTR
7 NC
9 SPKOUTL
Signal Name Pin
2
4
6
8
10
20
Signal Name
GND
+5V
C-SPK0-R
KEY
C-SPK0-L