Gigabyte AMD Socket 754 Processor Motherboard GA-K8NS Pro User Manual page 21

1) ATX_12V (+12V Power Connector)
This connector (ATX_12V) supplies the CPU operation voltage (Vcore).
If this "ATX_12V connector" is not connected, system cannot boot.
2) ATX (ATX Power Connector)
AC power cord should only be connected to your power supply unit after ATX power cable and
other related devices are firmly connected to the motherboard.
Pin No.
4
3
1
1 2
2
3
4
Pin No.
1
2
3
4
10 20
5
6
7
8
9
10
11
12
13
14
1 11
15
16
17
18
19
20
- 21 - Hardware Installation Process
Definition
GND
GND
+12V
+12V
Definition
3.3V
3.3V
GND
+5V
GND
+5V
GND
Power Good
5V SB (stand by +5V)
+12V
3.3V
-12V
GND
PS_ON(soft on/off)
GND
GND
GND
-5V
+5V
+5V