11
the connector with ease only in the right direction. If the direction is wrong it is hard to
fit in and if you make the connection by force if is possible.
PIN ROW1
ROW2
1
+3.3V
+3.3V
2
+3.3V
-12V
3
GND
GND
4
+5V
Soft Power on
5
GND
GND
6
+5V
GND
7
GND
GND
8
Power OK
-5V
9
+5V Stand by +5V
10
+12V
+5V
11
+12V
+5V
12
+3.3V
GND
24-pin Main Power Connector
Figure1
：
20-pin power plug
Figure 2
：
24-pin power plug
(2) ATX12V1 (8-pin block): 12V Power Connector
This is a new defined 8-pin connector that usually comes with ATX Power Supply that
supports 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.
Pin1
4
Pin Definition
No. Definition
1
GND
5
+12V
2
GND
6
+12V
3
GND
7
+12V
4
GND
8
+12V
