MSI G31M3-L V2 manual SYSFAN1, SYSFAN2, JUSB2

Important:

Please do not fold the Serial ATA cable into 90-degree angle. Otherwise, data loss may occur during transmission.

Fan Power Connectors: CPUFAN1,	Sensor
	Control
SYSFAN1, SYSFAN2	+12V
	GND
The fan power connectors support system cooling fan with +12V.
When connecting the wire to the connectors, always note that the	GND
red wire is the positive and should be connected to the +12V; the	+12V
black wire is Ground and should be connected to GND. If the	Sensor
mainboard has a System Hardware Monitor chipset on-board, you
must use a specially designed fan with speed sensor to take	Sensor	GND
advantage of the CPU fan control.
	+12V
Chassis Intrusion Connector: JCI1	GND	2
This connector connects to the chassis intrusion switch cable. If the	CINTRU	1
chassis is opened, the chassis intrusion mechanism will be
activated. The system will record this status and show a warning
message on the screen. To clear the warning, you must enter the
BIOS utility and clear the record.

S/PDIF-Out Connector: JSPD1

This connector is used to connect S/PDIF (Sony & Philips Digital Interconnect Format) interface for digital audio transmission.

GND

SPDIF

VCC

CD-In Connector: CD_IN1

This connector is provided for external audio input.

Front Panel Connectors: JFP1, JFP2

These connectors are for electrical connection to the front panel switches and LEDs. The JFP1 is compliant

	L GND R
	8	7
JFP2	Speaker	Power
		LED
	2	1

with Intel® Front Panel I/O Connectivity Design Guide.

Front USB Connector: JUSB1,

HDD

JFP1 LED

Reset

Switch

USB1+

+	1 2
	+
-	-
-
+

9 10

Power

LED

Power

Switch

JUSB2

This connector, compliant with Intel® I/O Connectivity Design Guide, is ideal for connecting high-speed USB interface peripherals such as USB HDD, digital cameras, MP3 players, printers, modems and the like.

USB1- GND

(2)VCC N.C.(10)

(1)VCC Key,no pin(9)

USB0- GND

USB0+

7