ASRock B660M-ITX/eDP User Manual - Page 31
Chassis/Water Pump Fan, pin CHA_FAN1/WP
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B660M-ITX/eDP Chassis Speaker Header (4-pin SPEAKER1) (see p.6, No. 15) SPEAKER DUMMY DUMMY +5V 1 Please connect the chassis speaker to this header. Chassis/Water Pump Fan Connector (4-pin CHA_FAN1/WP) (see p.6, No. 4) 4 3 2 1 FAN_SPEED_CONTROL CHA_FAN_SPEED FAN_VOLTAGE GND This motherboard provides a 4-Pin water cooling chassis fan connector. If you plan to connect a 3-Pin chassis water cooler fan, please connect it to Pin 1-3. Chassis Fan Connector (4-pin CHA_FAN2) (see p.6, No. 1) 4 3 2 1 FAN_SPEED_CONTROL CHA_FAN_SPEED +12V GND Please connect fan cables to the fan connector and match the black wire to the ground pin. CPU Fan Connector (4-pin CPU_FAN1) (see p.6, No. 3) 4 3 21 CPU_FAN_SPEED FAN_SPEED_CONTROL This 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 (24-pin ATXPWR1) (see p.6, No. 6) 12 24 1 13 This motherboard provides a 24-pin ATX power connector. To use a 20-pin ATX power supply, please plug it along Pin 1 and Pin 13. English 23