Connect your Mac to a Projector
Connect a VGA adapter to your computer display port (you can get one from the checkout center if you don't have one). Connect the VGA cable to the rack and to the adapter. If your desktop image does not appear, or appears without any icons, try the following:
Open the system preferences from the dock or from the Apple menu.
Next, open Displays and click Detect Displays.
In the next window, click the Arrangement tab, then check the Mirror Displays box.
If the image is tinted (green, blue, pink, etc.), you likely have a loose connection at the rack or at the computer end.
Make sure all connections are tight. If you still have color problems, reboot the computer. If this fails to resolve the problem, call the AV checkout window at x6378 to obtain a replacement VGA cable or adapter.