Computers for cross-platform development

[Pierre Abbat]

I'm planning to get several small computers so that I can test my software on 
several OSes. One will compile binaries for Windows; the others will run 
OpenBSD, NetBSD, probably FreeBSD, and maybe DragonFly (I already have a 
DragonFly box, but it's slow compared to my laptop). I'm looking at these:
https://www.newegg.com/Barebone-Mini-Computers/Category/ID-3
How can I make sure that all the hardware works on all the BSDs?

The reason I say "probably FreeBSD" is that another computer I'm going to get 
is a Power9 box from Raptor for big-endian testing. I know of two OSes that 
are big-endian on Power9: Adélie Linux and FreeBSD. However, while it is Tier 
1 on Adélie, it is Tier 2 on FreeBSD. So I may or may not set it up as dual-
boot.

Pierre
-- 
I believe in Yellow when I'm in Sweden and in Black when I'm in Wales.