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.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

User profile for user: Lexx3001
Lexx3001 Author
User level: Level 1
4 points

Please Help connect 2 different iMacs together

I have 2 imacs: iMac (Retina 5K, 27-inch, Late 2015) with Catalina and iMac (Retina 5K, 27-inch, 2019) with Big Sur). I am trying to connect them via Thunderbolt. I have tried 2 cables so far: Thunderbolt 3 from iMac 2019 into Thunderbolt 2 (adapter) to iMac 2015. Also Thunderbolt 3 to Mini display cable. Both of these didn’t work. Is there something I’m missing?


iMac 27″, macOS 10.15

Posted on Nov 7, 2021 11:04 AM

Reply
Question marked as Top-ranking reply
User profile for user: D.I. Johnson
D.I. Johnson
User level: Level 7
23,987 points

Posted on Nov 7, 2021 11:12 AM

Why are you trying to connect them?

Are you trying to use one as a display for the other?


Target display mode is a feature that was available only with certain older iMac models.

It is no longer a function supported by Apple in either hardware or software.


Only the following older iMac models can be used as an external display when plugged into another older Mac model:

  • iMac models introduced in 2011, 2012, 2013, and mid 2014 using Thunderbolt or Thunderbolt 2 cable.
  • 24-inch and 27-inch iMac models introduced in 2009 and 2010 using Mini DisplayPort cable.
  • The intended target iMac must be running macOS 10.13 High Sierra or earlier; it does not work with macOS 10.14 Mojave or later, or with Boot Camp and Windows.
  • Retina display iMacs won’t work as target displays.
  • In all cases the source Mac that you're connecting FROM must have been introduced in 2019 or earlier and have macOS 10.15 Catalina or earlier installed.


click> https://support.apple.com/en-us/HT204592

View in context

Similar questions

1 reply
Question marked as Top-ranking reply
User profile for user: D.I. Johnson
D.I. Johnson
User level: Level 7
23,987 points

Nov 7, 2021 11:12 AM in response to Lexx3001

Why are you trying to connect them?

Are you trying to use one as a display for the other?


Target display mode is a feature that was available only with certain older iMac models.

It is no longer a function supported by Apple in either hardware or software.


Only the following older iMac models can be used as an external display when plugged into another older Mac model:

  • iMac models introduced in 2011, 2012, 2013, and mid 2014 using Thunderbolt or Thunderbolt 2 cable.
  • 24-inch and 27-inch iMac models introduced in 2009 and 2010 using Mini DisplayPort cable.
  • The intended target iMac must be running macOS 10.13 High Sierra or earlier; it does not work with macOS 10.14 Mojave or later, or with Boot Camp and Windows.
  • Retina display iMacs won’t work as target displays.
  • In all cases the source Mac that you're connecting FROM must have been introduced in 2019 or earlier and have macOS 10.15 Catalina or earlier installed.


click> https://support.apple.com/en-us/HT204592

Reply

Please Help connect 2 different iMacs together

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.
Learn more Sign up