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Old 04-05-2011, 12:20 PM   #2
Carlo
Mac Team
 
Join Date: Feb 2009
Posts: 606
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To make clamshell mode work on Mac you need to have one monitor connected to the built-in video output port. I have memories of an external keyboard required as well but not sure that is still required.
Anyway, Mac OS won't stay awake with just USB monitors connected. Which is annoying as we all know that having just one cable to connect all peripherals is so convenient.
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