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.
Compatible only with Mac computers with Mini DisplayPort.