Note: no led for Caps-lock or Verr-Num
Machine delivered without OS.
Ubuntu 20.04.3 LTS installed without any problems. The free driver seems to handle the graphics card well, WiFi and BT seem OK.
First surprise: There is no indicator light for Caps-Lock and Verr-Num, you have to install an app called "Control Center".
Second surprise: it's a WINDOWS app! Fortunately the Gnome desktop environment has an extension for this kind of situation. I don't know what it is for other desktop environments.
Third surprise; "Control Center" also seems to take care of the keyboard backlighting. I'm looking for a package that does the job. But it will be minimalist and the promise of the description "Monochrome backlit keyboard with a choice of 15 colours" may not be kept.
Apart from that, it works!