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Using iMac Mid 2011 as second monitor for my iMac 2020

Hello all, I've been trying to find a way to use my iMac mid 2011 as second monitor for my newly bought iMac 2020. I bought the Thunderbolt 3 (USB-C) to Thunderbolt 2 Adaptor and the Thunderbolt Cable (All from Apple), and they DO NOT work!


I don't know what wrong with it? I even tried pressing command +F2, restarting all my computers, and they still don't work.


Anyone's having same problem? I need some help.

iMac 27″, macOS 10.15

Posted on Jan 8, 2021 2:28 PM

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Posted on Jan 8, 2021 2:41 PM

Target Display Mode is no longer available for the 2020 Macs. Some have gotten 2009 iMacs to work with 2020 Macs but only because of the 2009 uses a Display Port and not a Thunderbolt port. None have been able to get it to work with a Thunderbolt port.


You'll need to get a second monitor to use with your new 2020 iMac.


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Question marked as Top-ranking reply

Jan 8, 2021 2:41 PM in response to josenguyen88

Target Display Mode is no longer available for the 2020 Macs. Some have gotten 2009 iMacs to work with 2020 Macs but only because of the 2009 uses a Display Port and not a Thunderbolt port. None have been able to get it to work with a Thunderbolt port.


You'll need to get a second monitor to use with your new 2020 iMac.


Using iMac Mid 2011 as second monitor for my iMac 2020

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