ASRock N3150TM-ITX User Manual - Page 21
pin ATX19V_IN1
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Chassis Fan Connector (4-pin CHA_FAN1) (see p.5, No. 9) GND Please connect fan cable +12V to the fan connector and CHA_FAN_SPEED FAN_SPEED_CONTROL match the black wire to the ground pin. CPU Fan Connector (4-pin CPU_FAN1) (see p.5, No. 7) Internal Power Header (2-pin ATX19V_IN1) (see p.5, No. 30) Consumer Infrared Module Header (7-pin CIR1) (see p.5, No. 10) Serial Port Header (9-pin COM1) (see p.5, No. 17) Backlight Control Header (8-pin BLT_VOL1) (see p.5, No. 16) FAN_SPEED_CONTROL CPU_FAN_SPEED +12V GND his motherboard provides a 4-Pin CPU fan (Quiet Fan) connector. If you plan to connect a 3-Pin CPU fan, please connect it to Pin 1-3. his motherboard provides a 2-pin ATX 19V power connector. CIR input +5VA Learn-in LED 1 +5VA IRTX GND his header can be used to connect the remote controller receiver. RI NC his COM1 header RTS CTS supports a serial port GND DSR TXD DTR module. DCD RXD 1 1 1: Backlight Enable 2: Backlight Control 3: Backlight Power 4: Backlight Power 5: GND 6: GND 7: Brightness_Up 8: Brightness_Down English 16