ASRock A75M-ITX manual CPU Fan Connectors, ATX Power Connector, Supply to this connector

HDLED (Hard Drive Activity LED):

Connect to the hard drive activity LED on the chassis front panel. The LED is on when the hard drive is reading or writing data.

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	Please connect the chassis
(4-pin SPEAKER 1)	speaker to this header.
(see p.12 No. 4)

Chassis Fan Connector

(4-pin CHA_FAN1)	GND
(see p.12 No. 6)	+12V
	CHA_FAN_SPEED
	FAN_SPEED_CONTROL

Please connect the fan cables to the fan connectors and match the black wire to the ground pin.

CPU Fan Connectors	FAN_SPEED_CONTROL
(4-pin CPU_FAN1)	CPU_FAN_SPEED
	+12V
(see p.12 No. 1)	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
(3-pin CPU_FAN2)	+12V
	GND
(see p.12 No. 2)	CPU_FAN_SPEED

ATX Power Connector	24	13	Please connect an ATX power
(24-pin ATXPWR1)			supply to this connector.
(see p.12 No. 3)	12	1

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.

2413

20-Pin ATX Power Supply Installation 12
	1

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