Gigabyte GA-8I845GVM-775 Manual - Page 17

ATX_12V/ATX Power Connector

Page 17 highlights

English 1/2) ATX_12V/ATX (Power Connector) With the use of the power connector, the power supply can supply enough stable power to all the components on the motherboard. Before connecting the power connector, please make sure that all components and devices are properly installed. Align the power connector with its proper location on the motherboard and connect tightly. The ATX_12V power connector mainly supplies power to the CPU. If the ATX_12V power connector is not connected, the system will not start. Caution! Please use a power supply that is able to handle the system voltage requirements. It is recommended that a power supply that can withstand high power consumption be used (300W or greater). If a power supply is used that does not provide the required power, the result can lead to an unstable system or a system that is unable to start. If you use a 24-pin ATX power supply, please remove the small cover on the power connector on the motherboard before plugging in the power cord ; Otherwise, please do not remove it. 1 3 Pin No. Definition 2 4 1 GND 2 GND 3 +12V 4 +12V 11 1 Pin No. Definition 1 3.3V 2 3.3V 3 GND 4 +5V 5 GND 6 +5V 7 GND 20 10 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 - 17 - Hardware Installation

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Hardware Installation
- 17 -
English
1/2)
ATX_12V/ATX (Power Connector)
With the use of the power connector, the power supply can supply enough stable power to all the
components on the motherboard. Before connecting the power connector, please make sure that all
components and devices are properly installed.
Align the power connector with its proper location on
the motherboard and connect tightly.
The ATX_12V power connector mainly supplies power to the CPU. If the ATX_12V power
connector is not connected, the system will not start.
Caution!
Please use a power supply that is able to handle the system voltage requirements.
It is
recommended that a power supply that can withstand high power consumption be used (300W or
greater).
If a power supply is used that does not provide the required power, the result can lead to an
unstable system or a system that is unable to start.
If you use a 24-pin ATX power supply, please remove the small cover on the power connector
on the motherboard before plugging in the power cord ; Otherwise, please do not remove it.
Pin No.
Definition
1
GND
2
GND
3
+12V
4
+12V
3
4
1
2
20
11
10
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