Power Supply; Atx 20-Pin Power Connector: Jwr1; Atx 12V Power Connector: Jpw1 - MSI MS-7181 Manual

MS-7181 Micro-ATX Mainboard
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.

ATX 20-Pin Power Connector: JWR1

This connector allows you to connect to an ATX power supply. To connect to the ATX
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.
10 20
1 11
JWR1

ATX 12V Power Connector: JPW1

This 12V power connector is used to provide power to the CPU.
4 2
JPW1
3
1
MSI Reminds You...
There is a mechanism of this mainboard to protect it from being
damaged. The power will shut down automatically in two conditions: the
temperature of CPU reaches 100
booting up. Please follow the instructions below for this issue:
1. The power LED will blink continously. You should unplug the power
cord or turn off the power switch.
2. After the power LED stop blinking, plug on the power cord or turn on
the power switch, then you can reboot your system again.
2-8

Power Supply

JWR1 Pin Definition
PIN SIGNAL
1 3.3V
2 3.3V
3 GND
4 5V
5 GND
6 5V
7 GND
8 PW_OK
9 5V_SB
10 12V
PIN SIGNAL
1 GND
2 GND
3 12V
4 12V
o C, or the low voltage occurs during
PIN SIGNAL
1 1 3.3V
12 -12V
13 GND
14 PS_ON
15 GND
16 GND
17 GND
18 -5V
19 5V
20 5V
JPW1 Pin Definition