iMac as external display for Mac Book Pro

Discussion in 'Mac Basics and Help' started by Dr.HaNzN, Jan 24, 2015.

  1. Dr.HaNzN macrumors newbie

    Jan 24, 2015
    Hi there,

    I need some expertise from you guys!

    I have a Mac Book Pro 15" medio 2014. I want to use my iMac 27" medio 2010 as an external display when I create music in Logic.

    I've connected via
    Thunderbolt Mbook to mini display port iMac.
    HDMI Mbook to mini display port iMac.

    When I go to System preferences/ Monitor (display) there is no options available. When i connect a regular monitor the option is there.

    What do I do wrong? Or is it even possible.


    Dr. HaNzN
  2. Dave Braine macrumors 68040

    Dave Braine

    Mar 19, 2008
    Warrington, UK
  3. campyguy macrumors 68040

    Mar 21, 2014
    Portland / Seattle
    What Dave failed to point out is on Apple's own website has additional, but key, details - from your OP, you do not have the correct cable. You need a Mini DisplayPort to Mini DisplayPort cable for your intended connection.

    See this:

    FWIW, I was wondering this just last night for my own reasons and bookmarked it! I have found that DP cables work great when TB cables don't.

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