Intel Desktop Board D2550DC2 Product Guide
Connecting to the Front Panel Audio Header
Figure 11, A shows the location of the front panel audio header. The front panel audio
header can be used for both Intel HD Audio and AC '97 Audio.
Table 5 shows the pin assignments for the Intel HD Audio and Table 6 shows the pin
assignments for AC '97 Audio.
Table 5. Front Panel Audio Header for Intel HD Audio
Pin
Signal Name
1
[Port 1] Left channel
3
[Port 1] Right channel
5
[Port 2] Right channel
7
SENSE_SEND (Jack detection)
9
[Port 2] Left channel
Table 6. Front Panel Audio Header for AC '97 Audio
Pin
Signal Name
1
MIC
3
MIC_BIAS
5
FP_OUT_R
7
AUD_5V
9
FP_OUT_L
34
Pin
Signal Name
2
Ground
4
PRESENCE# (Dongle present)
6
[Port 1] SENSE_RETURN
8
Key (no pin)
10
[Port 2] SENSE_RETURN
Pin
Signal Name
2
AUD_GND
4
AUD_GND
6
FP_RETURN_R
8
KEY (no pin)
10
FP_RETURN_L