Power supply, Atx 20-pin power connector: conn1, Atx 12v power connector: jpw1 – Intel KM4AM User Manual
Page 19: 2 - 9 hardware setup, Conn1, Jpw1

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Hardware Setup
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.
ATX 20-Pin Power Connector: CONN1
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.
PIN
SIGNAL
11
3.3V
12
-12V
13
GND
14
PS_ON
15
GND
16
GND
17
GND
18
-5V
19
5V
20
5V
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
CONN1 Pin Definition
CONN1
10
1
20
11
JPW1
1
3
4
2
ATX 12V Power Connector: JPW1
This 12V power connector is used to provide power to the CPU.
PIN
SIGNAL
1
GND
2
GND
3
12V
4
12V
JPW1 Pin Definition