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pjelwood Author

Level 1

4 points

External displays

Can I use my late 2009 21.5" iMac as an external display for a 2018 Mac Mini? What connections/adapters would be required if this is possible?

iMac, macOS 10.12

Posted on Jan 29, 2020 12:31 PM

Top-ranking reply

BDAqua

Level 10

245,351 points

Posted on Jan 29, 2020 1:18 PM

Nope, sorry...

Note: Target Display Mode isn’t supported on iMac models with Retina display. Only iMac (27-inch, Late 2009), iMac (27-inch, Mid 2010), and iMac (Mid 2011 to Mid 2014) support Target Display Mode.

https://support.apple.com/guide/mac-help/use-an-imac-as-a-display-mh30822/mac

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External displays

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