ASRock P55 Extreme User Manual - Page 34
Chassis and Power Fan Connectors
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System Panel Header (9-pin PANEL1) (see p.12 No. 18) PLED+ PLEDPWRBTN# GND 1 DUMMY RESET# GND HDLEDHDLED+ This header accommodates several system front panel functions. Chassis Speaker Header (4-pin SPEAKER 1) (see p.12 No. 17) 1 SPEAKER DUMMY DUMMY +5V Chassis and Power Fan Connectors (4-pin CHA_FAN1) (see p.12 No. 27) FAN_SPEED_CONTROL GND +12V CHA_FAN_SPEED (3-pin CHA_FAN2) (see p.12 No. 26) GND +12V CHA_FAN_SPEED Please connect the chassis speaker to this header. Please connect the fan cables to the fan connectors and match the black wire to the ground pin. (3-pin CHA_FAN3) (see p.12 No. 4) (3-pin PWR_FAN1) (see p.12 No. 41) CPU Fan Connector (4-pin CPU_FAN1) (see p.12 No. 40) GND +12V CHA_FAN_SPEED GND +12V PWR_FAN_SPEED 1 GND Please connect a CPU fan cable 2 +12V 3 CPU_FAN_SPEED to this connector and match 4 FAN_SPEED_CONTROL 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 ATX Power Connector (24-pin ATXPWR1) (see p.12, No. 9) 12 24 1 13 Please connect an ATX power supply to this connector. 34