The more I mess with SBCs the more I lean towards this method. The M720q's or M710q's are two of my favorites. As an added bonus the chargers even work with my lenovo laptop(s).

I wish someone made a rack to hold them vertically. I'd own 10 if I could mount them in a rack like this: https://images.prismic.io/macstadium/949d85ad-18be-4059-acf6...