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Installing and Replacing Desktop Board Components
37
Front Panel Audio Header
The front panel audio header shown in Figure 16, I supports both Intel High Definition
(HD) Audio and AC ’97 Audio.
Table 12 shows the pin assignments and
signal names for HD Audio and Table 13
shows the pin assignments and signal names for AC ’97 Audio.
Table 12. Front Panel Audio Signal Names for Intel HD Audio
Pin Signal Name Pin Signal Name
1 PORT 1L (Microphone) 2 GND
3 PORT 1R (Microphone) 4 PRESENCE#
5 PORT 2R (Headphone) 6 SENSE1_RETURN
7 SENSE_SEND 8 KEY (no pin)
9 PORT 2L (Headphone) 10 SENSE2_RETURN
Table 13. Front Panel Audio Header Signal Names for AC ’97 Audio
Pin Signal Name Pin Signal Name
1 MIC 2 AUD_GND
3 MIC_BIAS 4 PRESENCE#
5 FP_OUT_R 6 AUD_GND
7 No Connection 8 KEY (no pin)
9 FP_OUT_L 10 AUD_GND