Wiki says one of these is required to boot.
However, Ameridroid’s product page doesn’t doesn’t say it comes with either, but does say it comes with Debian Buster? — I don’t get it — How does it work?
Do I need an eMMC/microSD to boot? Or is it only if I want to boot another OS?
If so, can anybody recommend a compatible & performant eMMC module for Rock 5B?