MSI K8MM3 Series

2-19
Hardware Setup
Front Panel Audio Connector: JAUD1
The mainboard provides one front audio connector for users to connect the optional
audio cable.
JAUD1
1
2
9
10
MSI Reminds You...
If you don’t want to connect to the front audio header, pins
5 & 6, 9 & 10 have to be jumpered in order to have signal
output directed to the rear audio ports. Otherwise, the
Line-Out connector on the back panel will not function.
5
6
10
9
PIN SIGNAL DESCRIPTION
1 AUD_MIC Front panel microphone input signal
2 AUD_GND Ground used by analog audio circuits
3 AUD_MIC_BIAS Microphone power
4 AUD_VCC Filtered +5V used by analog audio circuits
5 AUD_FPOUT_R Right channel audio signal to front panel
6 AUD_RET_R Right channel audio signal return from front panel
7 HP_ON Reserved for future use to control headphone amplifier
8 KEY No pin
9 AUD_FPOUT_L Left channel audio signal to front panel
10 AUD_RET_L Left channel audio signal return from front panel
Pin Definition
IrDA Infrared Module Header: JIR1
The connector allows you to connect to IrDA Infrared module. You must configure the
setting through the BIOS setup to use the IR function. JIR1 is compliant with Intel
®
Front Panel I/O Connectivity Design Guide.
JIR1
Pin Signal
1 NC
2 NC
3 VCC5
4 GND
5 IRTX
6 IRRX
JIR1 Pin Definition
6
5
2
1