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Chassis and Power Fan Connectors
(see p.2, No. 10)
(see p.2, No. 1)
CPU Fan Connectors
(see p.2, No. 4)
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.
ATX Power Connector
(24-pin ATXPWR1)
(see p.2, No. 6)
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.
ATX 12V Power Connector
(4-pin ATX12V1)
(see p.2, No. 2)
30
FAN_SPEED_CONTROL
CPU_FAN_SPEED
1
2
3
4
12
24
1
13
20-Pin ATX Power Supply Installation
ASRock B75M Motherboard
Please connect the fan cables
to the fan connectors and match
the black wire to the ground pin.
CHA_FAN1 supports Fan
Control.
Please connect the CPU fan
cable to the connector and
match the black wire to the
ground pin.
Pin 1-3 Connected
3-Pin Fan Installation
Please connect an ATX power
supply to this connector.
12
1
Please connect an ATX 12V
power supply to this connector.
24
13
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