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  1. #1

    Member Since
    Nov 03, 2012
    iMac display for my new Mac Pro
    Can I use my circa 2009 21 in iMac display as one of my displays for my new Mac Pro? I have read many threads concerning using various iMacs as displays for various macs. Combinations and answers are all over the map. This is my first attempt at using this forum.

  2. #2

    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Texas, where else?
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
    My initial thought would be no. The '09 iMacs do not have a video "in" port - only a video "out" port.

    It may be possible with an external video capture device - perhaps one of the ElGato products, but have not tried it myself. I would guess such a product would only allow you to mirror an existing display, not use it as a 2nd display. I would guess that would be of no use to you.

    You might try sending the question off to their support - link.
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  3. #3

    rpg51's Avatar
    Member Since
    Jan 22, 2012
    MBA 1.7 GHz Core i5, 4GB 1333 MHz DDR3 - Lion 10.7.4; Thunderbolt Display; 2011 iMac base w/SSD
    Related question - could I use a 2011 iMac with thunderbolt port as an single external monitor with a 2011 MacBook Air with thunderbolt port? How?

    If not, could I boot my iMac from the SSD drive in my Air and do it that way?

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