ASROCK M3A790GXH/128M User Manual download pdf (Page 38)

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ATX 12V Power Connector Please connect an ATX 12V

(8-pin ATX12V1) power supply to this connector.

(see p.14 No. 1)

CPU Fan Connector Please connect the CPU fan

(4-pin CPU_FAN1) cable to this connector and

(see p.14 No. 3) 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 Fan Installation

Pin 1-3 Connected

+ 5 V

DUMMY

S PEAKER

Chassis Speaker Header Please connect the chassis

(4-pin SPEAKER 1) speaker to this header.

(see p.14 No. 21)

GN D

+12V

C PU _FAN_SPEED

FAN_SPEED_CONTROL

Chassis, NB and Power Fan Connectors Please connect the fan cables

(3-pin CHA_FAN1) to the fan connectors and

(see p.14 No. 30) match the black wire to the

ground pin.

(3-pin NB_FAN1)

(see p.14 No. 10)

(3-pin PWR_FAN1)

(see p.14 No. 41)

GND

+12 V

CHA_FAN_SPEED

GND

+12V

NB_FAN_SPEED

20-Pin ATX Power Supply Installation

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 Power Connector Please connect an ATX power

(24-pin ATXPWR1) supply to this connector.

(see p.14 No. 9)

GND

+12V

PWR_FAN_SPEED

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 79 80

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ASROCK M3A790GXH/128M User Manual Page 38

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