ASRock A780LM-S User Manual - Page 24
Chassis Speaker Header - system panel header
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"Disable front panel jack detection", and save the change by clicking "OK". For Windows® VistaTM / VistaTM 64-bit OS: Click the right-top "Folder" icon , choose "Disable front panel jack detection", and save the change by clicking "OK". G. To activate the front mic. For Windows® XP / XP 64-bit OS: Please select "Front Mic" as default record device. If you want to hear your voice through front mic, please deselect "Mute" icon in "Front Mic" of "Playback" portion. For Windows® VistaTM / VistaTM 64-bit OS: Go to the "Front Mic" Tab in the Realtek Control panel. Click "Set Default Device" to make the Front Mic as the default record device. System Panel Header (9-pin PANEL1) (see p.11 No. 15) Chassis Speaker Header (4-pin SPEAKER 1) (see p.11 No. 8) Chassis Fan Connector (3-pin CHA_FAN1) (see p.11 No. 20) PLED+ PLEDPWRBTN# GND 1 DUMMY RESET# GND HDLEDHDLED+ 1 SPEAKER DUMMY DUMMY +5V GND +12V CHA_FAN_SPEED This header accommodates several system front panel functions. 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. CPU Fan Connector (4-pin CPU_FAN1) (see p.11 No. 6) Please connect the CPU fan 1 GND 2 +12V cable to this connector and 3 4 CPU_FAN_SPEED FAN_SPEED_CONTROL 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 24