Troubleshoot connectivity issues and optimize your setup for a seamless dual-screen experience Reviewed by Lisa Mildon Check the cables and make sure they are the correct type and securely connected.

For about as long as MacBooks have existed, confusion, questions and angst over how many external displays can run with them have plagued users. But at least some of the guesswork can be swept aside ...

The new MacBook Air has a useful upgrade: it natively supports up to two external displays, in addition to the laptop's built-in display. In other words, the latest MacBook Air can be used with a pair ...