ASRock 770iCafe Quick Installation Guide - Page 17
Chassis and Power Fan Connectors - cpu support
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System Panel Header (9-pin PANEL1) (see p.2 No. 22) This header accommodates several system front panel functions. Chassis Speaker Header (4-pin SPEAKER 1) (see p.2 No. 19) Please connect the chassis speaker to this header. Chassis and Power Fan Connectors (3-pin CHA_FAN1) (see p.10 No. 16) Please connect the fan cables to the fan connectors and match the black wire to the ground pin. (3-pin PWR_FAN1) (see p.10 No. 35) CPU Fan Connector (4-pin CPU_FAN1) (see p.2 No. 5) Please connect the CPU fan 4 cable to this connector and 3 2 match the black wire to the 1 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.2 No. 8) 12 24 Please connect an ATX power supply to this connector. 1 13 Though this motherboard provides 24-pin ATX power connector, 12 24 it can still work if you adopt a traditional 20-pin ATX power supply. To use the 20-pin ATX power supply, please plug your power supply along with Pin 1 and Pin 13. 20-Pin ATX Power Supply Installation 1 13 17 ASRock 770iCafe Motherboard English