ASRock H170M-ITX/ac User Manual - Page 31
pin ATX12V1
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Chassis Speaker Header (4-pin SPEAKER1) (see p.6, No. 11) SPEAKER DUMMY DUMMY +5V 1 Please connect the chassis speaker to this header. Chassis Fan Connector (4-pin CHA_FAN1) (see p.6, No. 1) FAN_SPEED_CONTROL CHA_FAN_SPEED FAN_VOLTAGE GND Please connect fan cables to the fan connectors and match the black wire to the ground pin. CPU Fan Connector (4-pin CPU_FAN1) (see p.6, No. 2) 4 3 21 GND FAN_VOLTAGE CPU_FAN_SPEED FAN_SPEED_CONTROL 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. ATX Power Connector (20-pin ATXPWR1) (see p.6, No. 5) 10 20 1 11 his motherboard provides a 20-pin ATX power connector. To use a 24-pin ATX power supply, please plug it along Pin 1 and Pin 11. Using a 24-pin ATX power supply: English ATX 12V Power Connector (4-pin ATX12V1) (see p.6, No. 17) 26 Please connect an ATX 12V power supply to this connector.