Hello Matthewchrome96,
Thanks for using Apple Support Communities.
From your post I see you are wondering if you are able to use Target Display mode on another iMac with the Retina 5K display. Please note that the current iMac (Retina 5K, 27-inch, Late 2014) does not support Target Display Mode.
What are the requirements for TDM?
- A Mac notebook or desktop with a Mini DisplayPort or Thunderbolt connection
- A Thunderbolt or Mini DisplayPort cable
- A supported iMac with OS X 10.6.1 or later. The table below shows iMac computers that support TDM, the required cables, and the port of the computer to which you are connecting the iMac.
iMac Model |
Cable Supported |
Port on Source Computer |
iMac (27-inch Late 2009) |
Mini DisplayPort to Mini DisplayPort |
Mini DisplayPort or Thunderbolt |
iMac (27-inch Mid 2010) |
Mini DisplayPort to Mini DisplayPort |
Mini DisplayPort or Thunderbolt |
iMac (Mid 2011) |
Thunderbolt to Thunderbolt |
Thunderbolt |
iMac (Mid 2012 and later) |
Thunderbolt to Thunderbolt |
Thunderbolt |
Note that the iMac (Retina 5K, 27-inch, Late 2014) does not support Target Display Mode.
Target Display Mode: Frequently Asked Questions (FAQ) - Apple Support
Take care,
Alex H.