ASRock Fatal1ty X79 Professional manual CPU Fan Connectors Please connect the CPU fan, Ground pin

(3-pin CHA_FAN3)	GND
(see p.4 No. 17)	+12V
	CHA_FAN_SPEED
(3-pin PWR_FAN1)	PWR_FAN_SPEED
	+12V
(see p.4 No. 44)
	GND

CPU Fan Connectors	Please connect the CPU fan
(4-pin CPU_FAN1)	cable to the connector and
(see p.4 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.

	Pin 1-3 Connected
	3-Pin Fan Installation
(3-pin CPU_FAN2)	CPU_FAN_SPEED
(see p.4 No. 6)	+12V
	GND

ATX Power Connector			12	24		Please connect an ATX power
(24-pin ATXPWR1)						supply to this connector.
(see p.4	No. 7)
			1	13
		Though this motherboard provides 24-pin ATX power connector,					12	24
		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		1	13
ATX 12V Power Connector			8		5	Please connect an ATX 12V
(8-pin ATX12V1)						power supply to this connector.
(see p.4	No. 3)
			4		1

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Fatal1ty X79 Professional Series Motherboard