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2-8 Connectors, Headers
2-8-1 Connectors
(1) Power Connector (20-pin block) : ATXPWR
ATX Power Supply connector. This is a new defined 20-pins connector that usually
comes with ATX case. The ATX Power Supply allows to use soft power on momentary
switch that connect from the front panel switch to 2-pins Power On jumper pole on the
motherboard. When the power switch on the back of the ATX power supply turned
on, the full power will not come into the system board until the front panel switch is
momentarily pressed. Press this switch again will turn off the power to the system
board.
(2) ATX 12V Power Connector (4-pin block) : ATX12V
This is a new defined 4-pins connector that usually comes with ATX Power Supply.
The ATX Power Supply which fully support Pentium 4 processor must including this
connector for support extra 12V voltage to maintain system power consumption.
Without this connector might cause system unstable because the power supply can not
provide sufficient current for system.
Pin 1
PIN
ROW2
1
3.3V
3.3V
2
-12V
3.3V
3
GND
GND
4
Soft Power On
5V
5
GND
GND
6
GND
5V
7
GND
GND
8
-5V
Power OK
9
+5V
+5V (for Soft Logic)
10
+5V
+12V
Pin 1
18
ROW1
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