ASRock B75 Pro3 User Manual - Page 35

Chassis and Power Fan Connectors - fan control

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Chassis Speaker Header (4-pin SPEAKER 1) (see p.13, No. 16) Power LED Header (3-pin PLED1) (see p.13, No. 22 Chassis and Power Fan Connectors (4-pin CHA_FAN1) FAN_SPEED_CONTROL CHA_FAN_SPEED (see p.13, No. 37) +12V GND (3-pin CHA_FAN2) (see p.13, No. 10) GND +12V CHA_FAN_SPEED (3-pin PWR_FAN1) (see p.13, No. 36) PWR_FAN_SPEED +12V GND Please connect the chassis speaker to this header. Please connect the chassis power LED to this header to indicate system power status. The LED is on when the system is operating. The LED keeps blinking in S1/S3 state. The LED is off in S4 state or S5 state (power off). Please connect the fan cables to the fan connectors and match the black wire to the ground pin. CHA_FAN1 and CHA_FAN2 supports Fan Control. CPU Fan Connectors FAN_SPEED_CONTROL CPU_FAN_SPEED (4-pin CPU_FAN1) (see p.13, No. 1) 1234 Please connect the CPU fan cable to the connector and match the black wire to the ground pin. 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 35

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35
Chassis Speaker Header
Please connect the chassis
(4-pin SPEAKER 1)
speaker to this header.
(see p.13,
No. 16)
Chassis and Power Fan Connectors
Please connect the fan cables
(4-pin CHA_FAN1)
to the fan connectors and match
(see p.13,
No. 37)
the black wire to the ground pin.
CHA_FAN1 and CHA_FAN2
supports Fan Control.
(3-pin CHA_FAN2)
(see p.13,
No. 10)
(3-pin PWR_FAN1)
(see p.13,
No. 36)
CPU Fan Connectors
Please connect the CPU fan
(4-pin CPU_FAN1)
cable to the connector and
(see p.13,
No. 1)
match the black wire to the
ground pin.
CPU_FAN_SPEED
FAN_SPEED_CONTROL
1
2
3
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.
3-Pin Fan Installation
Pin 1-3 Connected
Power LED Header
Please connect the chassis
(3-pin PLED1)
power LED to this header to
(see p.13,
No. 22)
indicate system power status.
The LED is on when the system
is operating. The LED keeps
blinking in S1/S3 state. The
LED is off in S4 state or S5
state (power off).
GND
+12V
PWR_FAN_SPEED
CHA_FAN_SPEED
FAN_SPEED_CONTROL
+12V
GND
GND
+12V
CHA_FAN_SPEED