This is one awesome little box.  It satisfied everything I was looking for: Low noise, small footprint and powerful "enough" for my needs.  I use this box for non-gaming (Office/Web/Web programming) and I couldn't be happier.  I am sensitive to PC noise and wanted a 100% silent build, and this box does it perfectly.  Like a previous reviewer advised,  I first verified that the box was digitally activated, then I went ahead and re-installed Windows Pro. Easy as pie.  Runs fast for me needs and the box is a quality build as previous reviewers noted.  Before I stumbled on this gem, I was going down the road of building my own custom 100% silent PC.  So glad I found this - I saved hundreds of dollars and didn't have to put anything together, it just came ready to go - AND with Windows 10 Pro.  (Granted, I understand sometimes part of the fun IS putting a PC together, but also happy to skip it).  I can't speak to tech support because I didn't need it.  Highly recommend!