The poor Wi-Fi, unreliable MicroSD reader, pulsing fan, and scorching high core temperature will reportedly all be fixed when backers receive their units next month. GMK has acknowledged these problems and is actively fixing them.
https://www.notebookcheck.net/GMK-says-it-will-fix-the-problems-we-experienced-on-the-NucBox.494478.0.html
Bad that they didn't detect this sooner, good that they're fixing it!
I think, They have to fix it before sale. Bad
Terrible. Bough it in April 2021. Wifi not working at all. Tried everything, from reinstalling Windows to downloading new wifi drivers, till using Windows Update in a bluetooth connection in cell phone (!) and nothing. Garbage.