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Front Panel Audio Header
The front panel audio header shown in Figure 19, A supports both Intel High Definition
Audio and AC '97 Audio.
Table 4 shows the pin assignments and signal names for HD Audio and Table 5 shows
the pin assignments and signal names for AC '97 Audio.
Table 4. Front Panel Audio Signal Names for Intel HD Audio
Pin
Signal Name
1
PORT 1L (Microphone)
3
PORT 1R (Microphone)
5
PORT 2R (Headphone)
7
SENSE_SEND
9
PORT 2L (Headphone)
Table 5. Front Panel Audio Header Signal Names for AC '97 Audio
Pin
Signal Name
1
MIC
3
MIC_BIAS
5
FP_OUT_R
7
No connection
9
FP_OUT_L
Internal Mono Speaker Header
The internal mono speaker header is shown in Figure 19, B. Table 6 shows the pin
assignments and signal names for the internal mono speaker header.
Table 6. Internal Mono Speaker Header
Signal Names
Pin
Signal Name
1
−
2
+
Installing and Replacing Desktop Board Components
Pin
Signal Name
2
Ground
4
PRESENCE#
6
SENSE1_RETURN
8
KEY (no pin)
10
SENSE2_RETURN
Pin
Signal Name
2
AUD_GND
4
PRESENCE#
6
AUD_GND
8
KEY (no pin)
10
AUD_GND
43
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