ASRock 990FX Extreme9 User Guide - Page 30

Chassis Speaker Header (4-pin SPEAKER 1) (see p.2 No. 19) 1 SPEAKER DUMMY +5V DUMMY Please connect the chassis speaker to this header. Power LED Header (3-pin PLED1) (see p.2 No. 30) 1 PLEDPLED+ PLED+ Please connect the chassis power LED to this header to indicate system power status. The LED is on when the system is operating. The LED keeps blinking in S1 state. The LED is off in S3/S4 state or S5 state (power off). Chassis and Power Fan Connectors (4-pin CHA_FAN1) (see p.2 No. 20) FAN_SPEED_CONTROL GND +12V CHA_FAN_SPEED (3-pin CHA_FAN2) (see p.2 No. 6) GND +12V CHA_FAN_SPEED (3-pin CHA_FAN3) (see p.2 No. 24) GND +12V CHA_FAN_SPEED (3-pin PWR_FAN1) (see p.2 No. 9) +12V GND PWR_FAN_SPEED Please connect the fan cables to the fan connectors and match the black wire to the ground pin. CHA_FAN1/2/3 fan speed can be controlled through UEFI or AXTU. English CPU Fan Connectors (4-pin CPU_FAN1) (see p.2 No. 4) FAN_SPEED_CONTROL CPU_FAN_SPEED +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 30 ASRock 990FX Extreme9 Motherboard