Specific second display query
Have upgraded the RAM and SSD on my iMac thanks to iFixit! All I'm missing now is ability use it as a second screen to my tiny PC laptop, following home working move.
Having seen posts for years that without Target Display Mode it can't be done (but also seen posts also referring to screen-recycler and also network sharing from a PC).
So I want to move past TDM as clearly there are options and to find out what possibilities there are for a working iMac be best used as an extended screen to a PC. Or failing this, at least mirroring as large monitor?
Any help greatly received