ASRock 970DE3/U3S3 manual CPU Fan Connectors

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
(4-pin SPEAKER 1)	SPEAKER
	DUMMY
(see p.12 No. 26)	+5V DUMMY

Please connect the chassis speaker to this header.

Power LED Header

(3-pin PLED1) 1

PLED-

(see p.12 No. 25)	PLED+
	PLED+

Please connect the chassis power LED to this header to indicate system power status. The LED is on when the system is operating. The LED keeps blinking in S1 state. The LED is off in S3/S4 state or S5 state (power off).

Chassis and Power Fan Connectors			Please connect the fan cables
(4-pin CHA_FAN1)			to the fan connectors and
(see p.12	No. 12)		match the black wire to the
			ground pin.
(4-pin PWR_FAN1)		FAN_SPEED_CONTROL
		PWR_FAN_SPEED
(see p.12	No. 2)
		+12V

GND

CPU Fan Connectors	FAN_SPEED_CONTROL
(4-pin CPU_FAN1)	CPU_FAN_SPEED
(see p.12 No. 3)	+12V
	GND
	1	2	3	4

Please connect the CPU fan cable to the connector and 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

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