ASRock X99 Extreme4/3.1 Quick Installation Guide - Page 26
pin C´A_FAN3
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Chassis and Power Fan Connectors (4-pin CHA_FAN1) (see p.1, No. 18) (3-pin CHA_FAN2) (see p.1, No. 17) (3-pin CHA_FAN3) (see p.1, No. 10) (3-pin PWR_FAN1) (see p.1, No. 32) GND +12V CHA_FAN_SPEED FAN_SPEED_CONTROL GND FAN_VOLTAGE CHA_FAN_SPEED Please connect fan cables to the fan connectors and match the black wire to the ground pin. CHA_ FAN fan speed can be controlled through UEFI or A-Tuning. GND FAN_VOLTAGE CHA_FAN_SPEED CPU Fan Connectors (4-pin CPU_FAN1) (see p.1, No. 4) (3-pin CPU_FAN2) (see p.1, No. 6) 4 3 21 GND +12V CPU_FAN_SPEED FAN_SPEED_CONTROL GND FAN_VOLTAGE CPU_FAN_SPEED 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 (24-pin ATXPWR1) (see p.1, No. 8) 12 24 ATX 12V Power Connector (8-pin ATX12V1) (see p.1, No. 3) 1 13 8 5 4 1 his 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. his motherboard provides an 8-pin ATX 12V power connector. To use a 4-pin ATX power supply, please plug it along Pin 1 and Pin 5. English 24