Dual Display Help

Discussion in 'iMac' started by gelie, Feb 25, 2015.

  1. gelie macrumors regular

    Joined:
    Mar 7, 2010
    #1
    Hello I'm thinking of buying a 27' retina iMac. I would like to use my existing 21.5 mid 2010 iMac as a dual display. can this bee done? What cable would i need to do this? Also should I transfer my existing data to the new iMac first?
     
  2. andy9l macrumors 68000

    Joined:
    Aug 31, 2009
    Location:
    England, UK
    #2
    Dual Display Help

    The 2010 21.5 inch iMacs cannot be used as external displays.

    A simple way to migrate your data would be to backup your existing iMac to an external hard drive using Time Machine. Then, use migration assistant to restore your data during the setup process of the new retina iMac.
     
  3. gelie thread starter macrumors regular

    Joined:
    Mar 7, 2010
    #3
    Thanks. I thought I heard there might be some software that might allow me to utilize my second IMac?
     
  4. andy9l macrumors 68000

    Joined:
    Aug 31, 2009
    Location:
    England, UK
    #4
    Dual Display Help

    Sorry, edited my post to be more specific. The 2010 21.5" does not support Target Display Mode.

    Unless I'm mistaken, your Mini DisplayPort is one-way - and that's out, not in. That's a hardware limitation, and not something software could solve.
     

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