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I have a 2020 M1 chip MacBook Pro and want to use a 2009 iMac 21.5" screen as an external monitor to mirror what is on the MacBook Pro screen - is this possible? If so, can anyone advise on the cable I would need and how I set this up to work. Thank you
MacBook Pro 13″, macOS 11.0
That article has confused a lot of people. The short version:
I have a 2020 M1 chip MacBook Pro...
👉🏻 No Apple Silicon Macs nor any Mac dated as a 2020 model can use Target Display Mode to send a video signal to any iMac set up as an external monitor.
... and want to use a 2009 iMac 21.5" screen as an external monitor
👉🏻 TDM support for 21.5-inch iMac was limited to Mid 2011 through Mid 2014 models. No workabouts there.
You still have the option of macOS screen sharing:
Share the screen of another Mac - Apple Support
or several similar third-party software methods.
Apple have done the full Rasputin on TDM; shot; stabbed; drowned; poisoned, etc.
This article discusses all that: Use your iMac as a display with Target Display Mode - Apple Support - https://support.apple.com/HT204592 - iMacs late 2009-Mid 2014
I have read that you can only use target display for late 2009 iMacs that are 27" and not 21.5" - do you know if this is correct?
Using iMac as an external screen
