GIGA-BYTE TECHNOLOGY GA-X99-Phoenix SLI, User Manual

Page: 24 / 128

- 24 - Hardware Installation
1/2) ATX_12V_2X4/ATX (2x4 12V Power Connector and 2x12 Main 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, first make sure the power supply is turned
off and all devices are properly installed. The power connector possesses a foolproof design. Connect the
power supply cable to the power connector in the correct orientation.
The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected,
the computer will not start.
To meet expansion requirements, it is recommended that a power supply that can withstand high
power consumption be used (500W or greater). If a power supply is used that does not provide the
required power, the result can lead to an unstable or unbootable system.
DEBUG
PORT
G.QBOFM
13 1
24 12
ATX
DEBUG
PORT
G.QBOFM
ATX_12V_2X4
8
4
ATX_12V_2X4:
Pin No. Definition
1 GND (Only for 2x4-pin 12V)
2 GND (Only for 2x4-pin 12V)
3 GND
4 GND
5 +12V (Only for 2x4-pin 12V)
6 +12V (Only for 2x4-pin 12V)
7 +12V
8 +12V
ATX:
Pin No. Definition Pin No. Definition
1 3.3V 13 3.3V
2 3.3V 14 -12V
3 GND 15 GND
4 +5V 16 PS_ON (soft On/Off)
5 GND 17 GND
6 +5V 18 GND
7 GND 19 GND
8 Power Good 20 NC
9 5VSB (stand by +5V) 21 +5V
10 +12V 22 +5V
11 +12V (Only for 2x12-pin
ATX) 23 +5V (Only for 2x12-pin ATX)
12 3.3V (Only for 2x12-pin
ATX) 24 GND (Only for 2x12-pin ATX)
5
1
When you overclock the CPU, make sure to connect one end of the included 1 to 3 power cable
to the ATX_12V_2X4 power connector and the other three to the power supply to ensure the
system is provided with enough power.