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Target Display Mode with M1 MBP and late 2013 iMac Running Catalina

I have an M1 MBP and a late 2013 21.5 inch iMac running macOS Catalina. I saw other people say that TDM is compatible with Catalina but for me, it's not working even with my thunderbolt 3 to thunderbolt 2 adaptor and mini-display port cable. Is there any fix available for me?

MacBook Pro 13″, macOS 11.3

Posted on May 4, 2021 12:21 PM

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Posted on May 4, 2021 12:30 PM

Nope. Won’t ever work.


Use your iMac as a display with target display mode - Apple Support


Key detail: You can connect any of these older iMac models to another Mac from 2019 or earlier for use as an external display.


The wording there is a little confusing, but your “display source” Mac is too new.

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May 4, 2021 12:30 PM in response to pranav155

Nope. Won’t ever work.


Use your iMac as a display with target display mode - Apple Support


Key detail: You can connect any of these older iMac models to another Mac from 2019 or earlier for use as an external display.


The wording there is a little confusing, but your “display source” Mac is too new.

Target Display Mode with M1 MBP and late 2013 iMac Running Catalina

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