You can make a difference in the Apple Support Community!
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
Hello! I am trying to use my mid 2010 21.5" iMac with High Sierra 10.13.6 as a target display for my Mac Book Air 2017 also with High Sierra 10.13.6. I have a mini display cable connecting both computers, but the target display does not seem to work. I tried all the tips from the website, but still no luck. Anything else you would recommend?
iMac 21.5″, macOS 10.13
The iMac (21.5 inch, Mid 2010) model cannot be used as an external display. Here is an article with more information.
The iMac (21.5 inch, Mid 2010) model cannot be used as an external display. Here is an article with more information.
21,5" 2010 iMacs were never supported. TDM would need a 27" 2010 iMac to work. In short, its not going to work!
Thank you! This helps a lot! At least I will stop buying and returning cables LOL
Thank you so much!!!
Your welcome.
target display mode
