Installing and Replacing Desktop Board Components
31
Connecting the Front Panel Header
Before connecting the front panel header, observe the precautions in “Before You Begin” on
page 21. Figure 10, C on page 30 shows the location of the front panel header.
Table 4 shows the pin assignments for the front panel header.
Table 4.
Front Panel Header (J9G1)
Pin Signal
In/Out Description
Pin Signal
In/Out Description
Hard Drive Activity LED
Power LED
1
HD_PWR
Out
Hard disk LED pull-
up (330
Ω
) to +5 V
2
HDR_BLNK_GRN Out
Front panel green
LED
3
HDA#
Out
Hard disk active LED 4
HDR_BLNK_YEL
Out
Front panel yellow
LED
Reset Switch
On/Off Switch
5 Ground
Ground
6 SWITCH_ON# In
Power
switch
7 FP_RESET#
In
Reset
switch
8 Ground
Ground
9
+5 V
Out
Power
10
N/C
Not connected
Installing a Front Panel Audio Solution
Figure 10, A on page 30 shows the location of the front panel audio header.
Table 5 shows the pin assignments for the front panel audio header.
Table 5.
Front Panel Audio Header Signal Names (J8A1)
Pin Signal
Name
Pin Signal
Name
1
AUD-MIC
2
AUD-GND
3 AUD-MIC-BIAS
4 AUD-VCC
5 AUD-FPOUT-R
6 AUD-RET-R
7 HP-ON
8 KEY
9 AUD-FPOUT-L
10
AUD-RET-L
To install the cable that connects the front panel audio solution to the front panel audio header,
follow these steps:
1. Observe the precautions in “Before You Begin” on page 21.
2. Turn off all peripheral devices connected to the computer. Turn off the computer and
disconnect the AC power cord.
3. Remove the cover.
4. Locate the front panel audio header (J8A1), see Figure 10, A on page 30.
5. Remove the two jumpers from the header to disable the back panel audio connectors.
6. Install a correctly keyed and shielded front panel audio cable.
7. Connect the audio cable to the front panel audio solution.
8. Replace the cover.