Connection between iMac and Macbook doesn't work
I try to connect an iMac (2011) with 10.13.6 with a Macbook Pro 13 (2020). I use thunderbolt but "CMD + F2" does nothing. What am I doing wrong?
iMac 27″, OS X 10.10
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Missy5937
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Community Specialist
Hello trulia80,
Thanks for using the Apple Support Communities. We see that you're having an issue getting Target Display Mode to work with your configuration. It appears that you would need to connect a Mac from 2019 or earlier to your iMac to utilize this feature. Also keep in mind that this feature does not work with macOS Mojave or later. Take a look at the article below for more information:
Use your iMac as a display with target display mode - Apple Support
Best regards.