Now connect the Mac laptop to an external monitor.Note: The devices can connect via USB or Bluetooth. Use an external mouse or trackpad and keyboard to operate the laptop.Tip: This can be a power cord, of course, but also a display that powers the computer through USB-C. Connect the Mac laptop to a power source.To turn off only the screen on your Mac laptop (MacBook Pro, MacBook Air, etc.) while working on an external display:
How to Turn Off the Screen on a Mac When Using an External Monitor
Now, to turn off the screen with a flick of the mouse cursor: Hint: You can make more than one corner turn off the Mac screen, too. Tip: You can require one or more keys to be pressed while the mouse cursor is in the corner for the display to be turned off hold down the desired key or keys ( Command, Control, Option, Shift and any combination) while selecting the Put Display to Sleep from the corner action’s menu. Now pick a corner to turn off the screen and select Put Display to Sleep for that corner.Make sure you are on the Screen Saver tab.Open the Desktop & Screen Saver category.Select System Preferences… from the Apple ( ) menu.To set up a corner on the screen to turn off the display: Ready to go to sleep now but your Mac apparently is not? How to find out why your Mac Is not going into sleep mode Use a Hot Mouse Corner to Turn Off a Mac’s Screen
Note: Merely moving they mouse pointer or touching the trackpad will not turn on the screen. Press and key, click a mouse button or tap on a trackpad to wake the screen again.Mouse alternative: You can also use hot corners to black out the screen using mouse or trackpad or set up a custom keyboard shortcut see below. No Eject key: If you find no Eject key on your Mac’s keyboard, use the On/Off button instead so, to turn off the screen on your Mac without sleeping it, press Control Shift On/Off. Which key: The Eject key usually shows ⏏. To quickly turn off your Mac’s screen at any time with a keyboard shortcut: