Apple Mini DisplayPort to VGA Adapter
The Mini DisplayPort to VGA Adapter lets you connect a standard analog monitor, projector, or LCD that uses a VGA connector or cable to a Mac with a Mini DisplayPort.

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.