Update - 7/28/2021 -- This thing died yesterday. While in email, it decided to reboot, but I'm not sure if it ever got out of the bios to the windows boot process.I have tried different drives and USB keys for booting - no joy. I swapped out memory strips - no joy. It just sits there end cycles through the bios boot process.Update 9/11/20 - The issue I reported in March wasn't a bios issue. The SSD drive, that came with the machine, kept disconnecting from the computer. After trying a couple of other M.2 drives in it, I determined that the drive connector is the real culprit. I had a 1TB Samsung 970 drive (2.5 inch format) That I connected to the available SATA connector. Reconfigured to boot from that drive and it has worked fine ever since. Yes, I could go back to Kingdel, in Hong Kong, but don't feel like the hassle. It's working fine with the Samsung SSD in it.Update 3/20/20  - if you have a USB key, or SD Chip in an adapter, or an external drive connected via USB, The BIOS forgets which is the boot drive and wants to boot from one of the USB drives. Kingdel uses AMI BIOS, but I can find no other reference to this issue.This thing is, basically, a laptop motherboard in an aluminum case, with a couple of interface boards for connections. I liked this one as it has a VGA connector and I didn't have to upgrade the monitor. It is in my workshop and does just fine.I had to wait for it to be built, tested & shipped from Hong Kong, but Kingdel kept me informed of every step, and it arrived in good time. They, also included a windows key in their final email, in case I had a problem with windows.It boots up with a Kingdel user, but all you have to do is add yourself as a user with administrator privileges. Then you can delete the Kingdel user.I might add another hard drive & more memory, later, if I need to, but for now this thing is fine.Only one con, which is why it lost a star. There is absolutely no documentation, users guide, manual, or even a start-up guide for it. None in the box and none on the Kingdel website. Although it is really a plug in and play machine, a real novice to windows computers would probably like some form of guide to get started with.