I am considering purchasing an iMac. Our office situation is such that the new computer will be placed where a monitor is presently located for a Windows laptop connected via a docking station.

Is it possible to connect external video to an iMac? Alternatively, is the iMac capable of hooking up to a second monitor? (my monitor has multiple inputs which I could just switch between) Are there other options that I am missing?

  • Are you asking about using the existing external display with both the iMac and the laptop, or using the iMac's internal display for both itself and the laptop's external display?
    – Dori
    Oct 13, 2010 at 0:11
  • @Dori I'd like to use iMac's internal display.
    – ahsteele
    Oct 13, 2010 at 1:47
  • possible duplicate of Console + iMac 27" 2011 External Display
    – Herr
    Jun 18, 2014 at 5:32

1 Answer 1


Is it possible to connect external video to an iMac?

Yes, the latest 27" iMac can act as a monitor via Mini DisplayPort. From Apple:

Mini DisplayPort output with support for DVI, VGA, and dual-link DVI (adapters sold separately); 27-inch models also support input from external DisplayPort sources (adapters sold separately)

You'll need an adapter to convert your laptop output to Mini DisplayPort. Be careful, as some adapters, such as those provided by Apple, are designed to output DVI/VGA/etc, and aren't capable of being reversed to accept it as input.

further reading: http://support.apple.com/kb/HT3924


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