GIGABYTE AMD Socket 754 Processor Motherboard GA-K8NS Pro - Manual (Page 21)

Hardware Installation Process
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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.
1
20 10
11
4 3
2 1
Pin No. Definition
1 3.3V
2 3.3V
3 GND
4 +5V
5 GND
6 +5V
7 GND
8 Power Good
9 5V SB (stand by +5V)
10 +12V
11 3.3V
12 -12V
13 GND
14 PS_ON(soft on/off)
15 GND
16 GND
17 GND
18 -5V
19 +5V
20 +5V
Pin No. Definition
1 GND
2 GND
3 +12V
4 +12V