ASRock B75M R2.0 manual ATX Power Connector

3-Pin Fan Installation

Please connect an ATX power supply to this connector.

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.Pin 1-3 Connected

The front panel design may differ by chassis. A front panel module mainly consists of power switch, reset switch, power LED, hard drive activity LED, speaker and etc. When connecting your chassis front panel module to this header, make sure the wire assignments and the pin assign-ments are matched correctly.

Chassis Speaker Header	1				Please connect the chassis
(4-pin SPEAKER 1)				SPEAKER	speaker to this header.
				DUMMY
(see p.13, No. 17)		+5V DUMMY
Chassis and Power Fan Connectors					Please connect the fan cables
(4-pin CHA_FAN1)		GND			to the fan connectors and match
(see p.13, No. 10)		+12V			the black wire to the ground pin.
		CHA_FAN_SPEED
		FAN_SPEED_CONTROL			CHA_FAN1 supports Fan
(3-pin PWR_FAN1)	PWR_FAN_SPEED				Control.
(see p.13, No. 1)				+12V
				GND
CPU Fan Connectors		FAN_SPEED_CONTROL			Please connect the CPU fan
(4-pin CPU_FAN1)		CPU_FAN_SPEED			cable to the connector and
			+12V
					match the black wire to the
(see p.13, No. 4)			GND

ground pin.

ATX Power Connector 12 24

(24-pin ATXPWR1)

(see p.13, No. 6)

113

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.

20-Pin ATX Power Supply Installation

1224

113

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