Connecting Thunderbold to Mini-DVI Video Out

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Hey guys. I need to use an old iMac as an external display for my late 2014 MacBook Pro.
I am guessing I will use the thunderbolt on my laptop to connect to the iMac which I believe has a Mini-DVI Video out. I can't be absolutely sure this is the name of the display port on the iMac though as I have been unable to find the exact model online (don't have the model number to hand).
I have attached a pic below. Cold someone confirm this is the Mini-DVI video out.

As it says it is a 'video out', will it be able to be used as a video 'in' port as mentioned in this apple article?; http://goo.gl/Jz06Im

If not, is there any other way of using this iMac as an external monitor for my laptop?

many thanks

IMG_1930.JPG
 

chscag

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As it says it is a 'video out', will it be able to be used as a video 'in' port as mentioned in this apple article?; http://goo.gl/Jz06Im

It should work in "Target Display Mode" as the article states. I've never tried it as my iMac has 2 TB ports and will work with any other Mac that has a TB port.
 

bobtomay

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Sort of hard to tell from that angle - appears to be mini-DVI.
You can head to everymac.com and look up your model iMac to verify the port on it.

Target Display Mode was introduced with the "displayport" protocol in 2009 - Apple uses the "mini displayport" on their devices - TDM requires the displayport or Thunderbolt protocols and will not work on previous models.
 
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Ok thanks a lot. I'll try & get the model no & check it on everymac.com
 

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