Connecting a MacBook Pro or MacBook Air to a TV using a VGA cable is mainly a matter of selecting the right adapter. While MacBook models sold in 2012 and early 2013 have Thunderbolt ports for connecting to external monitors, projectors and TVs, Apple changed the ports frequently on earlier models. Once you connect the cable, the MacBook should automatically mirror what you see on the screen to the TV using the right resolution and screen size; however, you can adjust these settings, if needed. Tips Warnings Writer Bio