ASRock H77M manual ATX Power Connector, Supply to this connector

Chassis and Power Fan Connectors					Please connect the fan cables
(4-pin CHA_FAN1)					to the fan connectors and match
(see p.2, No. 22)					the black wire to the ground pin.
					CHA_FAN1 and CHA_FAN2
(3-pin CHA_FAN2)					supports Fan Control.
(see p.2, No. 31)
(3-pin PWR_FAN1)
(see p.2, No. 32)
CPU Fan Connectors	4	3	2	1	Please connect the CPU fan
					cable to the connector and
(4-pin CPU_FAN1)
(see p.2, No. 2)			+12V		match the black wire to the
				GND
		CPU_FAN_SPEED			ground pin.
	FAN_SPEED_CONTROL

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

(3-pin CPU_FAN2)

(see p.2, No. 3)

ATX Power Connector	12	24	Please connect an ATX power
(24-pin ATXPWR1)			supply to this connector.
(see p.2, No. 6)
	1	13

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

English

ATX 12V Power Connector	5	1	Please connect an ATX 12V
(8-pin ATX12V1)	8	4	power supply to this connector.
(see p.2, No. 1)

31

ASRock H77M Motherboard