Trying to use my late 2013 Mac 21.5” as a second display for my 2020 Mac 27”. Smaller mac won't go into target display mode. Has anyone come across this issue? : r/mac
Third-Party Workaround for Target Display Mode | Astropad
Using an iMac as a Monitor Is More Complicated Than You Might Think
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Target Display Mode Guide: What iMacs can you use as a second monitor. - YouTube
Einfach selbst gebaut: Ein 5K-Monitor im iMac-Look › ifun.de
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How to Use Your Old iMac as a Monitor
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iMac als externen Monitor verwenden - Target Display Mode