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 DVI Adapter to connect an advanced
digital monitor, such as the 20- or 23-inch Apple Cinema Display, that
includes a DVI connector. 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.