Connect your MacBook, MacBook Pro, or MacBook Air to an advanced digital monitor, such as the 20- or 23-inch Apple Cinema Display, or to an external display or projector that has a DVI connection.</p><p>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.</p><p><strong>Note:</strong>Compatible only with MacBook, MacBook Pro, and MacBook Air with Mini DisplayPort. Output connector is <strong>DVI-D Single-Link</strong> connection.</p>