Connecting Optional Devices - IBM Motherboard User Manual

Connecting Optional Devices

Refer to the following for information on connecting the motherboard optional
devices:
SPK1: Speaker Header
Connect the cable from the PC speaker to the SPK1 header on the motherboard.
F_AUDIO1: Front Panel Audio Header
This header allows the user to install auxiliary front-oriented microphone and line-
out ports for easier access.
Pin
1 AUD_MIC
3 AUD_MIC_BIAS
5 AUD_FPOUT_R
7 HP_ON
9 AUD_FPOUT_L
Chapter 2: Motherboard Installation
Pin Signal
1 +5V
2 NC
3 GND
4 SPKR
Signal Pin Signal
2 AUD_GND
4 AUD_VCC
6 AUD_RET_R
8 KEY
10 AUD_RET_L
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