ASRock AD2700B-ITX Quick Installation Guide - Page 19
Chassis Fan Connector
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The front panel design may differ by chassis. A front panel module mainly consists of power switch, reset switch, power LED, hard drive activity LED, speaker and etc. When connecting your chassis front panel module to this header, make sure the wire assignments and the pin assign-ments are matched correctly. Chassis Speaker Header (4-pin SPEAKER 1) (see p.2 or 3 No. 12) Chassis Fan Connector (3-pin CHA_FAN1) (see p.2 or 3 No. 3) CPU Fan Connector (3-pin CPU_FAN1) (see p.2 or 3 No. 1) GND +12V CPU_FAN_SPEED ATX Power Connector (24-pin ATXPWR1) (see p.2 or 3 No. 5) 12 24 Please connect the chassis speaker to this header. Please connect the fan cable to the fan connector and match the black wire to the ground pin. Please connect the CPU fan cable to the connector and match the black wire to the ground pin. 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 English 19 ASRock AD2700B-ITX / AD2500B-ITX Motherboard