Power Supply; Atx 24-Pin Power Connector: Atx1 - MSI MS-7277 Instruction Manual

MSI Reminds You...
1. Confirm if your CPU cooler is firmly installed before turning on your system.
2. Check the information in H/W Monitor in BIOS for the CPU temperature.
3. Do not touch the CPU socket pins to avoid damaging.
4. Whenever CPU is not installed, always protect your CPU socket pin with the plastic cap
covered to avoid damaging.
5. Please note that the mating/unmating durability of the CPU is 20 cycles. Therefore we suggest
you do not plug/unplug the CPU too often.
Memory
The mainboard provides two 240-pin unbuffered DDRII 533/ DDRII 667 SDRAM DIMMs, and
supports the memory size up to 2 GB. To operate properly, at least one DIMM module must be
installed. (For the updated supporting memory modules, please visit
http://www.msi.com.tw/program/products/mainboard/mbd/pro_mbd_trp_list.php)
Install at least one DIMM module on the slots. Memory modules can be installed on the slots in
any order. You can install either single- or double-sided modules to meet your own needs.
Installing DDRII Modules
1. The memory module has only one notch on the center of module. The module will only fit in
the right orientation.
2. Insert the memory module vertically into the DIMM slot. Then push it in until the golden finger
on the memory module is deeply inserted in the DIMM slot.
3. The plastic clip at each side of the DIMM slot will automatically close.

Power Supply

The mainboard supports ATX power supply for the power system. Before inserting the power
supply connector, always make sure that all components are installed properly to ensure that no
damage will be caused. A 350W or above power supply is suggested.

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'd like to use the 20-pin ATX power
supply, please plug your power supply along with pin 1 & pin 13. There is also a foolproof design
on pin 11, 12, 23 & 24 to avoid wrong installation.
Volt Notch
+5V
GND
+3.3V
+12V
6
+5V GND GND GND
+5V Res GND
PS-ON#
+12V
+5V +5V
PWR OK
5VSB GND GND GND
+3.3V
-12V
+3.3V
+3.3V