ASRock P45R2000 Quick Installation Guide - Page 30
CPU Fan Connector
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System Panel Header (9-pin PANEL1) (see p.2/3 No. 23) This header accommodates several system front panel functions. Chassis Speaker Header (4-pin SPEAKER 1) (see p.2/3 No. 15) Please connect the chassis speaker to this header. Chassis Fan Connector (3-pin CHA_FAN1) (see p.2/3 No. 25) Please connect a chassis fan cable to this connector and match the black wire to the ground pin. CPU Fan Connector (4-pin CPU_FAN1) (see p.2/3 No. 1) Please connect a CPU fan cable to this connector and match the black wire to the ground pin. 1 2 3 4 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. 41 or p.3 No. 40) 13 1 Please connect an ATX power supply to this connector. 24 12 Though this motherboard provides 24-pin ATX power connector, 13 1 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 24 12 English 30 ASRock P45R2000-WiFi / P45R2000 / P45TurboTwins2000 Motherboard