21.5" as second display for primary 21.5"?

Discussion in 'iMac' started by Stunod7, Nov 11, 2011.

  1. Stunod7 macrumors member


    Mar 21, 2008
    Does anyone know if it's possible to use another 21.5" iMac as a secondary display for my primary 21.5"? Every video, article, thread, etc that I see online seems to only talk about doing it with a 27" but I don't want to fork up the money for a 27" plus I like to have matching size displays. I'd rather try and locate a used 21.5" and use that.

    Has anyone reading tried this?
  2. talmy macrumors 601


    Oct 26, 2009
    No, you can't. Only the 27" supports operating as a monitor via the Thunderbolt port.

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