Are you able to share the desktop across all monitors? Or does it simply duplicate the desktop to all monitors?

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Accepted Answer

No this only splits the original signal four ways.  If you want to have for  monitors (desktops) you need to make sure that you get a pair of video cards that have dual output each or you may even find one that will split it 4 ways that you are looking to do.  Just be careful because some cards say 4 monitor support but because of the type of connections they in reality support actually less.

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