Though this motherboard provides 24-pin ATX power connector, it can still work if you adopt a traditional 20-pin ATX power supply. To use the 20-pin ATX power supply, please plug your
power supply along with Pin 1 and Pin 13.
20-Pin ATX Power Supply Installation
31
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin CPU fan still can work successfully even without the fan speed control function. If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this
motherboard, please connect it to Pin 1-3.Pin 1-3 Connected 3-Pin Fan Installation

Chassis and Power Fan Connectors

 

 

 

 

 

Please connect the fan cables

(4-pin CHA_FAN1)

FAN_SPEED_CONTROL

 

 

 

 

to the fan connectors and match

(see p.13, No. 33)

CHA_FAN_SPEED

 

 

 

 

the black wire to the ground pin.

+12V

 

 

 

 

 

 

GND

 

 

 

 

 

(3-pin CHA_FAN2)

 

 

 

 

 

 

 

(see p.13, No. 13)

 

 

 

 

 

 

 

(3-pin PWR_FAN1)

PWR_FAN_SPEED

 

 

 

 

(see p.13, No. 32)

+12V

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU Fan Connectors

4

3

2

1

 

 

Please connect the CPU fan

 

 

 

 

cable to the connector and

(4-pin CPU_FAN1)

 

 

 

 

 

 

(see p.13, No. 1)

 

 

 

GND

match the black wire to the

 

+12V

 

 

 

CPU_FAN_SPEED

ground pin.

 

 

FAN_SPEED_CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ATX Power Connector

12

24

Please connect an ATX power

(24-pin ATXPWR1)

 

 

supply to this connector.

(see p.13, No. 5)

113

1224

113

Page 31
Image 31
ASRock P75 Pro3 manual Please connect the fan cables, Match the black wire to, Ground pin, ATX Power Connector