I got this new a couple of years ago, to replace a terribly old Mac that couldn't keep up anymore. I've been astonished at how fast this little PC has been. The specs don't really tell you the whole story. The folks at HP managed to optimize this machine so that it's just blazing fast compared to other computers I've had that were closer to top of the line in their day. It may not hold up well for instensive things like video procesing or bulk graphic editing in Illustrator, but for the vast majority of productivity type tasks, this tiny PC is perfect. You'd never know you're on a mini PC except the fact that it's stone cold quiet and doesn't have great HD space (just get a 500GB flash drive, they're cheap). With 7 USB ports and a 2 DisplayPorts, even the lack of HDMI isn't a very big deal. Thunderbolt would be nice but there are workarounds.  I've got this thing hooked into a 43 inch 4K monitor and everything looks beautiful. Mouse is a bit slower on the big screen, but that's it.Upgrading to Win 11 was as easy as upgrading the TPM to 2.0 w/ HPs official tool, and using MSFT's registry override published on their site with instructions how to install Windows 11 on machines deemed incapable (Windows will tell you the CPU on this machine isn't up to par, but that's ridiculous). Then during the ISO ugprade you need to selected advanced and turn automatic updates during installation OFF or the install will cut out. Also, all the warnings about how if you upgrade on a machine deemed incapable will make you ineligible for future Windows updates are totally bogus - updates work fine. Windows 11 is way better than 10, especially for multiple monitors. I ran the Performance Monitor app in Windows 11, and not only did this machine pass with flying colors, it scored an 8.7 in the CPU area - where 5 is a passing score. So not only can the CPU handle Windows 11, it handles it a lot better than plenty of the machines deemed capable of Win 11.Buying one of these for $110 refurbished for office, home, or school is a no brainer.