MSI G31M3-L V2 manual ATX 24-Pin Power Connector ATX1, Floppy Disk Drive Connector FDD1

Important:

DDR2 memory modules are not interchangeable with DDR and the DDR2 standard is not backwards compatible. You should always install DDR2 memory modules in the DDR2 DIMM slots.

To enable successful system boot-up, always insert the memory modules into the DIMM1 first.

ATX 24-Pin Power Connector: ATX1

This connector allows you to connect an ATX 24-pin power supply. To connect the ATX 24-pin power supply, make sure the plug of the power supply is inserted in the proper orientation and the pins are aligned. Then push down the power supply firmly into the connector.

You may use the 20-pin ATX power supply as you like. If you like to use the 20-pin ATX power supply, please plug your power supply along with pin 1 & pin 13 (refer to the image at the right hand).

+3.3V

+12V

+12V

5VSB

PWR OK GND +5V GND +5V GND

+3.3V

+3.3V

GND +5V +5V +5V Res

GND

GND

GND PS-ON#

GND

-12V +3.3V

ATX 12V Power Connector: JPW1	+12V
This 12V power connector is used to provide power to the CPU.	+12V

Important:

GND

GND

Make sure that all the connectors are connected to proper ATX power supplies to ensure stable operation of the mainboard.

Power supply of 350 watts (and above) is highly recommended for system stability. ATX 12V power connection should be greater than 18A.

Floppy Disk Drive Connector: FDD1

This connector supports 360 KB, 720 KB, 1.2 MB, 1.44 MB or 2.88 MB floppy disk drive.

IDE Connector: IDE1

This connector supports IDE hard disk drives, optical disk drives and other IDE devices.

Important:

If you install two IDE devices on the same cable, you must configure the drives to cable select mode or separately to master / slave mode by setting jumpers. Refer to IDE device documentation supplied by the vendors for jumper setting instructions.

Serial ATA Connector: SATA1 /SATA2/ SATA3/ SATA4

This connector is a high-speed Serial ATA interface port. Each connector can connect to one Serial ATA device.

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