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I am trying to use an iMac with target display mode but it doesn't work. I have a 2020 iMac 27 with Catalina and a 2013 iMac 27 Late with Hgh Sierra. They are connected with a Thunderbolt cable and a Thunderbolt 3 to Thunderbolt 2 adapter. I have tried using the Command-F2 and Command-Fn-F2 keys on the 2013 iMac and nothing happens. I don't understand, is there something I am forgetting? Please help!
iMac Line (2012 and Later)
Use your iMac as a display with target display mode - Apple Support
"You can connect any of these older iMac models to another Mac from 2019 or earlier for use as an external display."
Use your iMac as a display with target display mode - Apple Support
"You can connect any of these older iMac models to another Mac from 2019 or earlier for use as an external display."
Is it the Apple brand adapter and Apple brand keyboard?
Target Display Mode
