ASRock E350M1 Quick Installation Guide - Page 19
CPU Fan Connectors
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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 No. 13) Please connect the chassis speaker to this header. Chassis Fan Connectors (4-pin CHA_FAN1) (see p.2 No. 2) CHA_FAN_SPEED +12V GND FAN_SPEED_CONTROL (3-pin CHA_FAN2) (see p.2 No. 14) Please connect the fan cables to the fan connectors and match the black wire to the ground pin. CHA_FAN2 supports fan speed control by fan power voltage. CPU Fan Connectors (3-pin CPU_FAN1) (see p.2 No. 1) ATX Power Connector (24-pin ATXPWR1) (see p.2 No. 7) 12 24 Please connect the CPU fan cable to the connector and match the black wire to the ground pin. CPU_FAN1 supports fan speed control. 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. Serial port Header (9-pin COM1) (see p.2 No. 21) 20-Pin ATX Power Supply Installation 1 13 This COM1 header supports a serial port module. English 19 ASRock E350M1 Motherboard