Installing and Replacing Desktop Board Components
Front Panel Audio Header
The front panel audio header shown in Figure 20, A supports both Intel High Definition (HD) Audio and AC ’97 Audio.
Table 7 shows the pin assignments and signal names for HD Audio and Table 8 shows the pin assignments and signal names for AC ’97 Audio.
Table 7. Front Panel Audio Signal Names for Intel HD Audio
Pin | Signal Name | |
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|
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1 | PORT 1L | (Microphone) |
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3 | PORT 1R | (Microphone) |
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5 | PORT 2R | (Headphone) |
|
| |
7 | SENSE_SEND | |
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9 | PORT 2L | (Headphone) |
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Pin | Signal Name |
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2 | GND |
|
|
4 | PRESENCE# |
6SENSE1_RETURN
8KEY (no pin)
10SENSE2_RETURN
Table 8. Front Panel Audio Header Signal Names for AC ’97 Audio
Pin | Signal Name |
|
|
1 | MIC |
|
|
3 | MIC_BIAS |
5FP_OUT_R
7No connect
9FP_OUT_L
Pin | Signal Name |
|
|
2 | AUD_GND |
|
|
4 | PRESENCE# |
6AUD_GND
8KEY (no pin)
10AUD_GND
Alternate Front Panel Power LED Header
Figure 20, B shows the location of the alternate front panel power LED header. Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel header. If your chassis has a
Table 9. Alternate Front Panel Power LED Header Signal Names
Pin | Signal Name | In/Out |
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|
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1 | Front panel LED+ | Out |
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2 | No pin |
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3 | Front panel LED- | Out |
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|
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