ASRock IMB-370-D manual CPU Fan Connectors

CPU Fan Connectors	FAN_SPEED_CONTROL
(4-pin CPU_FAN1)	CPU_FAN_SPEED
(see p.8 No. 9)	+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
(3-pin CPU_FAN2)	GND
(see p.8 No. 8)	+12V
	CPU_FAN_SPEED

ATX Power Input Connector	Please connect an ATX power
(20-pin ATXPWR1)	supply to this connector.
(see p.8 No. 10)

COM Port Headers			RRXD1
(9-pin COM5: see p.8	No. 11)			DDTR#1
				DDSR#1
(9-pin COM6: see p.8	No. 12)				CCTS#1
(9-pin COM4: see p.8	No. 13)	1				RRI#1
(9-pin COM3: see p.8	No. 14)
					RRTS#1
				GND
				TTXD1
			DDCD#1

COM port headers support serial port modules.

PIN	RS232	RS422	RS485
1	DCD, Data	TX-	RTX-
	carrier detect
2	RXD, Receive	RX+	N/A
	data
3	TXD, Transmit	TX+	RTX+
	data
4	DTR, Data	RX-	N/A
	terminal ready
5	GND	GND	GND

Digital Input / Output Pin Header
	PIN	Signal Name	PIN	Signal Name
(9-pin JGPIO1)	1	Digital Output 0	2	Digital Input 0
(see p.8, No. 16)	3	Digital Output 1	4	Digital Input 1
	5	Digital Output 2	6	Digital Input 2
	7	Digital Output 3	8	Digital Input 3
	9	JGPIO_PWR1	10	GND

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