The only question I have is that if I use my imac to a target display mode, while using it as a secondary display, does the background programs from imac still.... Feb 9, 2018 The only catch is I still want to run the iMac as as stand alone computer. I'm figuring there's software out there to do this....just can't find anything. I.... Oct 12, 2020 All the iMacs models that can work in what Apple called Target Display Mode as a secondary display for a modern Mac require an adapter to... 877e9