NetStrand Mini DisplayPort to VGA Adapter
Use the Mini DisplayPort to VGA Adapter to extend your Mac to a standard analog monitor, projector, or LCD that uses a VGA connector or cable. 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 MacBook, MacBook Pro, MacBook Air or any other Mini-DisplayPort compatible device.
MacBook, MacBook Pro, and MacBook Air each have a Mini DisplayPort which allows you to connect an external display or projector using this 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.