With Apple TV or an AirPlay 2-compatible smart TV, you can mirror the entire display of your Mac to your TV or use your TV as a separate display.
- Connect your Mac to the same Wi-Fi network as your Apple TV or AirPlay 2-compatible smart TV.
- On your Mac, click in the menu bar at the top of your screen. If you don't see , go to Apple menu > System Preferences > Displays, then select "Show mirroring options in the menu bar when available."
- Choose your Apple TV or AirPlay 2-compatible smart TV.
- If an AirPlay passcode appears on your TV screen, enter the passcode on your Mac.