ASRock P43 Pro/USB3 Quick Installation Guide - Page 18
Chassis and Power Fan Connectors
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Chassis Speaker Header (4-pin SPEAKER 1) (see p.2 No. 23) Chassis and Power Fan Connectors (4-pin CHA_FAN1) (see p.2 No. 8) (3-pin PWR_FAN1) (see p.2 No. 32) CPU Fan Connector (4-pin CPU_FAN1) (see p.2, No. 3) 1 2 3 4 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. Please connect a CPU fan cable to this 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 ATX Power Connector (24-pin ATXPWR1) (see p.2 No. 7) 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. ATX 12V Power Connector (8-pin ATX12V1) (see p.2 No. 2) 20-Pin ATX Power Supply Installation 1 13 8 5 4 1 Please connect an ATX 12V power supply to this connector. English 18 ASRock P43 Pro/USB3 Motherboard