Hit the function key and then the corresponding 'F' button to turn the port on. There's usually a symbol on one of the 'F' keys resembling 2 boxes with a slash between them. Make sure the VGA port is turned on if you're using a VGA connection.X Expert Source Luigi OppidoД¬omputer & Tech Specialist Expert Interview. HDMI cords create an instant digital connection. There are additional controllers and HDMI ports if Apple MPX Module graphics cards are installed.For any operating system before Monterey, try opening System Preferences, choosing Displays, then selecting Detect Displays (you may have to hold down the Option key for this button to appear). If your connecting cable and adapter are fully plugged in and you have checked your monitorвЂ™s input, but you still are not seeing your MacBookвЂ™s screen, your MacBook might not be detecting the monitor.You should be able to change your monitorвЂ™s input by pressing a button on the bottom or the side of the monitor, selecting Input, then selecting the option with the same name as the port you are using. If your monitor is not displaying your MacBookвЂ™s screen, be sure that you have selected the right video input.You should now see your MacBookвЂ™s screen on the monitor!

Users can also change the settings for the connection including audio, resolution adjustment, and the display. Plug the monitor into power and turn it on. Connecting an Apple MacBook to a Projector or External Display Faculty, students, and staff can connect a MacBook to a projector or external display via an HDMI cable.

Connect macbook to monitor cable