Installing and Replacing Desktop Board Components
Front Panel Audio Header
The front panel audio header shown in Figure 23, A supports both Intel High Definition (HD) 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 | |
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1 | PORT 1L | (Microphone) |
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3 | PORT 1R | (Microphone) |
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5 | PORT 2R | (Headphone) |
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| |
7 | SENSE_SEND | |
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9 | PORT 2L | (Headphone) |
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Pin | Signal Name |
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2 | GND |
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4 | PRESENCE# |
6SENSE1_RETURN
8KEY (no pin)
10SENSE2_RETURN
Table 5. Front Panel Audio Header Signal Names for AC ’97 Audio
Pin | Signal Name |
|
|
1 | MIC |
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3 | MIC_BIAS |
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5 | FP_OUT_R |
7AUD_5V
9FP_OUT_L
Pin | Signal Name |
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2 | AUD_GND |
|
|
4 | AUD_GND |
6FP_RETURN_R
8KEY (no pin)
10FP_RETURN_L
Internal Mono Speaker Header
The internal mono speaker header is shown in Figure 23, B. Table 6 shows the pin assignments and signal names for the internal mono speaker header.
Table 6. Internal Mono Speaker Header
Pin | Signal Name |
1−
2+
47