@aurora sadly every competitior just vomits out some boards with shit to nonexistent documentation.
You might - if you don't need #ARM64 but could also use #ix86 / #amd64 - choose some #ThinClient like a #hp #T620 which can be had for as little as €30 with power supply, optional stand, 4GD DDR3L-SODIMM and 8GB M.2 B-Key SSD.