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Chassis and Power
Fan Connectors
(4-pin CHA_FAN1)
(see p.2, No. 12)
(4-pin PWR_FAN1)
(see p.2, No. 1)
CPU Fan Connectors
(4-pin CPU_FAN1)
(see p.2, No. 5)
Though this motherboard provides a 4-Pin CPU fan (Quiet Fan)
connector, 3-Pin CPU fans can still work successfully even with-
out the fan speed control function. If you plan to connect a 3-Pin
CPU fan to the CPU fan connector on this motherboard, please
connect it to Pin 1-3.
(3-pin CPU_FAN2)
(see p.2, No. 6)
ATX Power Connector
(24-pin ATXPWR1)
(see p.2, No. 9)
Though this motherboard provides a 24-pin ATX
power connector, it can still work if you adopt a
traditional 20-pin ATX power supply. To use a 20-
pin ATX power supply, please plug your power
supply along Pin 1 and Pin 13.
30
FAN_SPEED_CONTROL
FAN_SPEED
+12V
GND
1
2
3
FAN_SPEED
+12V
GND
12
24
1
13
20-Pin ATX Power Supply Installation
ASRock FM2A75 Pro4-M Motherboard
Please connect the fan
cables to the fan connectors
and match the black wire to
the ground pin.
Please connect the CPU fan
cable to the connector and
match the black wire to the
ground pin.
4
Pin 1-3 Connected
3-Pin Fan Installation
Please connect an ATX pow-
er supply to this connector.
12
24
1
13
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