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I do have an iMac late 2014 - El Capitan os 10-11-6. I want to use it as a display and connect it to my mac book pro 2021. (I do have all the needed cables like thunderbolt, etc) in order to do that my imac version should be high Sierra or Sierra or earlier version. Apparently I cannot upgrade my imac version to any version after el capitan. Please advise how can i use it as the second display.
iMac 27″, OS X 10.11
At least two reasons why this won't work, both hardware-related:
1) Macs made after 2019 cannot use a TDM-supported iMac as an external monitor.
2) The last iMacs that could act as an external monitor for another Mac were the Mid 2014 models.
TDM was always limited technology. The strict hardware and software requirements are laid out in this Apple support article:
Use your iMac as a display with target display mode - Apple Support
At least two reasons why this won't work, both hardware-related:
1) Macs made after 2019 cannot use a TDM-supported iMac as an external monitor.
2) The last iMacs that could act as an external monitor for another Mac were the Mid 2014 models.
TDM was always limited technology. The strict hardware and software requirements are laid out in this Apple support article:
Use your iMac as a display with target display mode - Apple Support
Great...
I went online to ask an apple tech this exact question if it was possible.
He had me buy a thunderbolt cable and the Thunderbolt to USB-c adapter.
Got my new iMac yesterday to set this up and ..... (Fart noise)
What am I gonna do with my old iMac now :(
You cannot. recent Macs cannot used with Target Display Mode.
Return it to Apple for recycling.
use imac as a second display
