Way back in 2009, Apple added a very handy feature to iMacs, allowing them to be used as a monitor for another Mac – typically a MacBook. Known as Target Display Mode, the company unfortunately dropped the feature from the model launched in late 2014 and it has never returned.
If you want to do the same with later iMacs, there is an app for that, as we outlined last year. But Quinn Nelson at Snazzy Labs opted instead for the ultimate conversion …
We should start by echoing the same caution as Macworld: this is not a task for the faint-hearted. You’ll need to buy a new display driver, audio board, power supply unit, fan controller, transformer, and some glue. Additionally, you’ll need decent electronics project skills, including disassembling, soldering, crimping, splicing, and testing.
Källa: The ultimate way to convert an old iMac into a Studio Display – 9to5Mac
