MSI G31M3-L V2 manual Front Panel Audio Connector JAUD1, SPI Debugging Connector JSPI1

Front Panel Audio Connector: JAUD1

This connector allows you to connect the front panel audio and is compliant with Intel® Front Panel I/O Connectivity Design Guide.

MIC2_JD

VCC5 NC

(2)GND Line_JD(10)

(1)MIC_L Line-out_L(9)

MIC_R Front to Sense

Line-out_R

SPI Debugging Connector: JSPI1

This connector is for internal debugging only.

Serial Port Connector: JCOM1

This connector is a 16550A high speed communication port that sends/receives 16 bytes FIFOs. You can attach a serial device to it.

DSR

DTR CTS

(2)SINKey,no pin (10)

(1)DCDRI (9)

SOUT RTS

GND

TPM Module connector:

JTPM1(Optional)

This connector connects to a TPM (Trusted Platform Module) module. Please refer to the TPM security platform manual for more details and usages.

1 2

LCLK 3Vdual/ 3V_STB

LRST# VCC3

LAD0 SIRQ

LAD1 VCC5

LAD2 KEY

LAD3 GND

LFRAME# GND 1314

Clear CMOS Jumper: JBAT1

There is a CMOS RAM onboard that has a power supply from an external battery to keep the data of system configuration. With the CMOS RAM, the system can automatically boot OS every time it is turned on. If you want to clear the system configuration, set the jumper to clear data.

Important:

1	1	1
2	2	2
3	3	3
	Keep Data	Clear Data

You can clear CMOS by shorting 2-3 pin while the system is off. Then return to 1-2 pin position. Avoid clearing the CMOS while the system is on; it will damage the mainboard.

PCI (Peripheral Component Interconnect) Express Slot

The PCI Express slot supports the PCI Express interface expansion card.

The PCI Express x 16 slot supports up to 4.0 GB/s transfer rate.

PCI (Peripheral Component Interconnect) Slot

8