Asrock imb-770 用户手册

CPU Fan Connectors

Please connect the CPU fan

(4-pin CPU_FAN1)

cable to the connector and

(see p.8 No. 5)

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.

(3-pin CPU_FAN2)

(see p.8 No. 4)

Pin 1-3 Connected

3-Pin Fan Installation

GND

+12V

CPU_FAN_SPEED

FAN_SPEED_CONTROL

1 2 3 4

GND

+12V

CPU_FAN_SPEED

2.6 Onboard Headers and Connectors

Onboard headers and connectors are NOT jumpers. Do NOT place
jumper caps over these headers and connectors. Placing jumper caps
over the headers and connectors will cause permanent damage of the
motherboard!

Chassis Fan Connectors

Please connect the fan cable

(4-pin CHA_FAN1)

to the fan connector and

(see p.8, No. 50)

match the black wire to the

ground pin.

(3-pin CHA_FAN2)
(see p.8, No. 51)

ATX 12V Power Input Connector

Please connect an ATX 12V

(8-pin ATX12V1)

power supply to this connector.

(see p.8, No. 3)

8 5

4 1

Though this motherboard provides 8-pin ATX 12V power connector, it can still work
if you adopt a traditional 4-pin ATX 12V power supply. To use the
4-pin ATX power supply, please plug your power supply along
with Pin 1 and Pin 5.

4-Pin ATX 12V Power Supply Installation

8 5

4 1

GND

+12V

CHA_FAN_SPEED

FAN_SPEED_CONTROL