imac as monitor?

Discussion in 'iMac' started by paalitha, May 10, 2018.

  1. paalitha macrumors newbie

    paalitha

    Joined:
    Feb 7, 2018
    Location:
    Nashville
    #1
    Is it possible to use a 2009 late imac 21.5 as a monitor for a new mac air?
     
  2. redheeler macrumors 604

    redheeler

    Joined:
    Oct 17, 2014
    #2
    The Late 2009 21.5" iMac doesn't support Target Display Mode.
     
  3. Guy Clark Suspended

    Guy Clark

    Joined:
    Nov 28, 2013
    Location:
    London United Kingdom.
    #3
    Yes, the iMac late 2009 supports Target Display Mode

    Cable Supported: Mini DisplayPort to Mini DisplayPort

    Port on Source Computer: Mini DisplayPort or Thunderbolt

    Thunderbolt ports are backwards compatible, meaning they support MiniDisplay Port cables. Your iMac 2009 with MiniDisplay Port does not support Thunderbolt. So you will need a Mini DisplayPort to Mini DisplayPort cable; this would then be plugged into Mini DisplayPort in 2009 iMac and Thunderbolt port in the Air.
     
  4. DeltaMac macrumors G3

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #4
    That information is incorrect. The OP asked about a Late 2009 21.5-inch iMac. Only the 27-inch from that era supports Target Display mode (TDM). The 21.5-inch iMac did not support TDM until 2011, when the iMac included thunderbolt.
     

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