Gigabyte B450M K User Manual - Page 20

8) F_AUDIO (Front Panel Audio Header) The front panel audio header supports High Definition audio (HD). You may connect your chassis front panel audio module to this header. Make sure the wire assignments of the module connector match the pin assignments of the motherboard header. Incorrect connection between the module connector and the motherboard header will make the device unable to work or even damage it. 9 1 10 2 Pin No. 1 2 3 4 5 6 7 8 9 10 Definition MIC L GND MIC R NC Head Phone R MIC Detection SENSE_SEND No Pin Head Phone L Head Phone Detection Some chassis provide a front panel audio module that has separated connectors on each wire instead of a single plug. For information about connecting the front panel audio module that has different wire assignments, please contact the chassis manufacturer. 9) SPEAKER (Speaker Header) Connects to the speaker on the chassis front panel. The system reports system startup status by issuing a beep code. One single short beep will be heard if no problem is detected at system startup. Pin No. Definition 1 1 VCC 2 NC 3 NC 4 SPK- - 20 -