MSI 815 PRO Manual page 18

2.7-1 ATX 20-pin Power Connector: JWR
This connector supports the power button on-board. Using the ATX power
supply, functions such as Modem Ring Wake-Up and Soft Power Off are
supported by this mainboard. This power connector supports instant power
on function which means that system will boot up instantly when the power
connector is inserted on the board.
10
Power Connector
PIN DEFINITION
PIN
1
2
3
4
5
6
7
8
9
10
Warning: Since the mainboard has the instant power on function, make
sure that all components are installed properly before inserting the power
connector to ensure that no damage will be done.
20
1 11
ATX
SIGNAL
3.3V
3.3V
GND
5V
GND
5V
GND
PW_OK
5V_SB
12V
PIN
11
12
13
14
15
16
17
18
19
20
2-14
SIGNAL
3.3V
-12V
GND
PS_ON
GND
GND
GND
-5V
5V
5V