It found one of those in the late 2000s and early 2010s with target display mode, which was a useful and short-lived feature. Target display mode allowed for a compatible iMac to be used as an ...
Thunderbolt-based iMacs starting in 2011 can only be a Target Display Mode (TDM) screen for computers connected via Thunderbolt. Previous Mini DisplayPort-based iMacs could serve as an external ...