Mac OS X: Multiple displays setup doesn't work
Symptoms
If your computer is set up to use multiple displays, shut it down and make sure the displays are properly connected.
Products Affected
Mac OS X 10.4, Mac OS X 10.3, Mac OS X 10.2, Mac OS X 10.1, Mac OS X 10.0, Displays, Mac OS X 10.5
Resolution
If you want to set up your computer for multiple displays, but you don't see the Arrange tab in Displays preferences, make sure you have a graphics card installed for each display connected to your computer.
The Arrange tab in Displays preferences only appears when you have more than one graphics card installed in your computer and your computer can display an extended desktop.
This document contains information from Help Center, the help system included with your computer.
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