I've had this little computer for two days now. It arrived in good shape with only light signs of previous use. It was clean inside. All the promised components were in the box, including the power supply. The little WIFI dongle works fine (2.5 Ghz only). The keyboard and mouse are cheap, and it took a little while to figure out how they work (hint: look for a USB dongle inside the mouse).The best part, though, is the computer itself. I love the sturdy metal case. All the ports work. It is well built compared with some of the little low-cost "NUC" computers on the market now. After all, it was originally sold into the business market. On my unit, there was an HDMI port as well as two display ports. If I ever need to replace memory or the 500mb M.2 drive, they are easily accessible in the bottom of the unit. There seem to have been many variations of this unit — particularly the types of ports included and types of internal disks (M.2 vs. 2.5-inch SSD).Windows 10, a perfectly legal copy, configured just fine. I partitioned the disk and installed Ubuntu 20.10 on half of the disk. Dual boot works fine. I mostly run Ubuntu, but it's nice to have Windows 10. WIFI and the keyboard+mouse work fine under both Windows and Ubuntu. For anything other than gaming, the computer is plenty fast.I expect to get several years use out of this computer and eventually replace it with a later-generation refubished computer.