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ATX Power
ATX power connector has 20 pins, which is designed for ATX case especially.
The ATX power supply supports the function of the “Soft Power On
Momentary switch” which connects on the front panel switch to the 2-pin
SOFT-PWR on the system board. While the power switch on the back of
ATX power is turned on, the full power will not go into the system board until
the front panel switch is momentarily pressed. Push the switch again to turn off
the power to the system board.
Pin
Signal
Pin
Signal
Pin 1
3.3V
Pin 2
3.3V
Pin 3
3.3V
Pin 4
-12V
Pin 5
GND
Pin 6
GND
Pin 7
5V
Pin 8
SOFT-PWR ON
Pin 9
GND
Pin 10 GND
Pin 11
5V
Pin 12 GND
Pin 13
GND
Pin 14 GND
Pin 15
RAW POWER
Pin 16 -5V
Pin 17
5V
Pin 18 5V
Pin 19
+12V
Pin 20 5V
36
Pin 1
Pin 19
Pin 2
Pin 18
