Using isorespin.sh
Instructions on installing Ubuntu or Ubuntu Flavour, Linux Mint, KDE neon, elementary OS, BackBox, or Peppermint on Beelink AP42 or Kodlix AP42 and possibly other Apollo Lake Intel CPU computers.
This is the specific machine I purchased from Amazon CoolFun N42 DIY SSD Mini PC Intel Apollo Lake Pentium N4200 Processor.
I couldn't find any step-by-step instructions detailing this, so here we go.