Confusion on display - Connecting a thunderbolt Late 2013 MacPro to 27" iMac C2D 10,1

Is this possible? I also have a 2011 MacBook Pro i7 that I'd like to connect to the iMac - I'm usually not confused this easily, but wow.

Posted on Sep 12, 2015 9:51 AM

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5 replies

Sep 12, 2015 10:50 AM in response to Dinky1

You can use certain iMacs as displays for other Macs. But your iMac does not just "become" a display. You have to invoke Target Display Mode on your iMac:


Use your iMac as a display with Target Display Mode - Apple Support

As for using your MacBook Pro as an external display: ForgetAboutIt


You can use Screen Sharing, which uses software to accomplish that. It will work for most uses, but not Video Editing.

Sep 12, 2015 10:34 AM in response to Grant Bennet-Alder

Thank you both Grant B-A and IIIaass - I thought that's what I saw, but then I saw a document saying that a mini display port can't communicate with thunderbolt, maybe it was just data, but I was confused enough that I didn't buy an adaptor.


Thank you very much for your time and sorry about my ignorance on seeing the TGM article on my mac. I actually have an adaptor that I used to use to play Xbox on my iMac so I'm familiar with target display.


Have a good one m8's - CHEERS!

Sep 12, 2015 10:50 AM in response to Dinky1

Mini DisplayPort is a subset of ThunderBolt.


Adapters pick up a subset of the ThunderBolt signals, and those can be used to drive a Mini DisplayPort Display directly, or can be converted to Full-size DisplayPort (just a signal swap, co conversion) or to another "legacy" display with an adapter.


But you cannot turn Mini DisplayPort back into ThunderBolt. Signals are missing and it does not work.

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Confusion on display - Connecting a thunderbolt Late 2013 MacPro to 27" iMac C2D 10,1

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