ASRock 4Core1333-eSATA2 Quick Installation Guide - Page 23
Please connect an ATX 12V
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Chassis Speaker Header (4-pin SPEAKER 1) (see p.2 No. 19) Chassis Fan Connector (3-pin CHA_FAN1) (see p.2 No. 11) CPU Fan Connector (4-pin CPU_FAN1) (see p.2 No. 5) 4 3 2 1 Please connect the chassis speaker to this header. Please connect a chassis fan cable to this connector 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 (20-pin ATXPWR1) (see p.2 No. 35) 12 24 Please connect an ATX power supply to this connector. 1 13 12 24 Though this motherboard provides 24-pin ATX power connector, 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 ATX 12V Connector (4-pin ATX12V1) (see p.2 No. 2) SLI/XFIRE Power Connector (4-pin SLI/XFIRE_POWER1) (see p.2 No. 34) SLI/XFIRE_POWER1 Please connect an ATX 12V power supply to this connector. It is not necessary to use this connector, but please connect it with a hard disk power connecor when two graphics cards are plugged to this motherboard at the same time. English 23 ASRock 4Core1333-eSATA2 Motherboard