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Use mid 2011 27" iMac as second display for 2019 iMac

How do I connect these two iMacs together to use the mid-2011 iMac as a second display for my new 2019 27" iMac? I have tried connecting a Thunderbolt cable to the new Thunderbolt to USB-C apple adapter, but the 2011 display does not show up. thoughts? Thanks.

iMac 27", macOS 10.13

Posted on Jan 25, 2020 3:11 PM

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Question marked as Top-ranking reply

Posted on Jan 25, 2020 4:58 PM

Here are a couple very good support documents on the subject:


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

Use your iMac as a display - Apple Support

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Use mid 2011 27" iMac as second display for 2019 iMac

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