macOS User Guide
- Welcome
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- Work across devices using Continuity
- Use iPhone as a webcam
- Use iPhone with Desk View
- Stream audio and video with AirPlay
- Use one keyboard and mouse to control Mac and iPad
- Hand off between devices
- Unlock your Mac with Apple Watch
- Make and receive phone calls on your Mac
- Sync music, books, and more between devices
- Resources for your Mac
- Resources for your Apple devices
- Copyright
If your Mac switches to a different audio device
When you’re using an external display with your Mac, if your audio output or input immediately reverts to a different audio device than the one you selected in Sound settings, do any of the following:
If you have headphones or external speakers plugged into a Mac connected to a display: When you select the display’s built-in speakers in the Output options of Sound settings, your selection may revert to the headphones or external speakers. To select the display’s speakers, first unplug the headphones or external speakers, then make your selection.
If you have a headset plugged into a Mac connected to a display: When you select the display’s built-in microphone in the Input options of Sound settings, your selection may revert to the headset. To select the display’s built-in microphone, first unplug the headset, then make your selection.