Mini DisplayPort to VGA Adapter

Every Mac with a Mini DisplayPort allows you to connect an external display or projector using an adapter
You can use an external display as your main workspace or to extend your desktop
or you can work in mirrored mode with a projector so you can view what your audience sees.

Use the Mini DisplayPort to VGA Adapter to connect your Mac to a standard analog monitor
projector, or LCD that uses a VGA connector or cable
Review the documentation or check with the manufacturer of your monitor to make sure you're choosing the right adapter