Connect your Mac computer to an analog monitor, projector, or LCD that uses a VGA connector or cable with this Mini DisplayPort to VGA adapter from Apple.
Lets You Use an External Display in Different Ways
This adapter allows you to use an external display as your main workspace and also provides an extension to your desktop. With this adapter, you can work in a mirror mode with a projector to view what your audience sees.
This adapter is designed for the Mac computers with Mini DisplayPort and Thunderbolt ports.