Target Display Mode: 2012 iMac 27" & 2019 MBP 16"

Hexley

macrumors 65816
Original poster
Jun 10, 2009
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I have a late 2012 iMac 27" with Thunderbolt 2 that I want to use as a display for my 2019 MBP 16" with Thunderbolt 3.

Other than the Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter would I need to get a Thunderbolt 2 cable or will a miniDisplay cable be sufficient?
 

Fishrrman

macrumors Core
Feb 20, 2009
19,390
6,701
I could be wrong, but...

... If you're going to boot and run from Catalina (standard OS on MBP 16"), target display mode won't be possible, because Catalina no longer supports it.

This doesn't matter if you have an iMac that can do it, because... again... Catalina won't support it.

I could be wrong.

Might be time to start shopping for an external display to go with the MBP 16"...
 

CoastalOR

macrumors 68030
Jan 19, 2015
2,693
989
Oregon, USA
This Apple article says to connect from the 2012 iMac with a thunderbolt cable to a Apple Thunderbolt 2 to 3 adapter to your MBP.

This link has some additional information.
 
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Hexley

macrumors 65816
Original poster
Jun 10, 2009
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@CoastalOR link states it works on Catalina.

I could be wrong, but...

... If you're going to boot and run from Catalina (standard OS on MBP 16"), target display mode won't be possible, because Catalina no longer supports it.

This doesn't matter if you have an iMac that can do it, because... again... Catalina won't support it.

I could be wrong.

Might be time to start shopping for an external display to go with the MBP 16"...
 

Hexley

macrumors 65816
Original poster
Jun 10, 2009
1,006
99
This Apple article says to connect from the 2012 iMac with a thunderbolt cable to a Apple Thunderbolt 2 to 3 adapter to your MBP.

This link has some additional information.
Thank you. Now to go to hunting for used cables and adapters. I do not want to pay $100 for cables. Maybe I can get both for $40.
 
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