I love this little PC. I've upgraded to 16GB of memory and it is very a peppy little thing. It comes with Win 10 Pro so I finished the setup and took it for a spin. It runs Win 10 very well with just 8GB of ram, though I upgraded that.I wiped windows for Linux as a media and build server. , I just put a bigger SSD in and now dual boot it. I am buying another one for my parents to use for a win 10 desktop.The company offers great tech support. The refurbished unit I received had a BIOS password set. I emailed them after hours and they got back to me first thing in the AM. They told me I had to move a jumper to reset the BIOS password. I 100% recommend this mini pc and this company.