This is what I noticed as well. I have thin clients from Dell, HP, and Lenovo and the build quality of the Fujitsu is better than all of them (Lenovo being second, but Lenovo is the only brand where I had one fail too, so dunno what that means). And when I read 'Made in Germany' on them, it was clear why these were made 'just better'.
As a thin client, it's quite fast because of the additional built-in gpu. I haven't done a full production test yet, but for my use case (RDP) it seems as these will literally be twice as fast as the Wyse GX-420CA based thin client I just recently upgraded to from my 415CA based one.
I didn't purchase mine from the seller I linked to, but I think the guy I got these from on reddit originally did. He was trying to use one of the for pfsense and hadn't done anything with the other one. I upgraded both to 16GB of ram and loaded the original win10 image from Fujitsu's site and they were back to factory stock. And windows activates when you manually tell it to activate so license is tied to the board.
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
There was a small coa sticker which you can see in the image in the ebay link so I think those could do the same if you wanted to restore them.
I'm actually surprised the seller hasn't fully restored them because a working win10 based thin client with a gpu/slot would double the sales prices. I have even toyed with the idea of buying the lot and restoring them and reselling them, but I don't have time to do that.
Some notes on the power that I gathered from my friend's site parkytowers--these will take either 19v or 20v adapters and according to the motherboard spec sheet and technical manual, even 12v should work as it bypasses the voltage converter on the board. I personally haven't tried anything other than 19v since that's all I have lying around.
Couldn't be happier with my two.