Dell P2418HZM 23.8" 16:9 IPS Monitor - Manual (Page 60)

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| Operating your monitor
The following message is displayed:
Click Yes . The notebook webcam is now disabled and the monitor webcam will be
used as the default setting. Restart the notebook.
Setting up the monitor speaker as default setting
When your computer connects multiple speakers, if you want to set up the monitor
speaker as default setting, please follow below instructions:
Right-click Volume in the Windows task bar notification area.
click Playback devices enter to Sound setting interface.