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Installing and Replacing Desktop Board Components
33
Analog Surround Audio Header
Figure 16, A shows the location of the analog surround audio header and Table 4
shows the pin assignments and signal names.
Table 4. Analog Surround Audio Header
Signal Names
Pin Signal Name Pin Signal Name
1 Front_L 2 A_GND
3 A_GND 4 Front_R
5 Surr_L 6 A_GND
7 A_GND 8 Surr_R
9 Surr_Bk_L 10 A_GND
11 A_GND 12 Surr_Bk_R
13 Center 14 A_GND
15 A_GND 16 LFE
17 KEY 18 SENSE
Internal Stereo Speakers Connector
Figure 16, B shows the location of the internal stereo speakers connector and Table 5
shows the pin assignments and signal names.
Table 5. Internal Stereo Speakers
Connector Signal Names
Pin Signal Name
1 Front_L−
2 Front_L+
3 Front_R+
4 Front_R−
Home Theater PC (HTPC) Header
Figure 16, C shows the location of the HTPC header and Table 6 shows the pin
assignments and signal names.
Table 6. HTPC Header Signal Names
Pin Signal Name Pin Signal Name
1 RECORDING_LED 2 Ground
3 No Connection 4 SMB_CLK_RESUME
5 +3.3 V 6 SMB_DATA_RESUME
7 PWRBTN# 8 CEC