Not to be rude... but have you tried
GoogleEmbedded computers. most likely used in CNC machinery, communications array ++++
Not likely to have any major support in any regular OS.
im not that familiar with embedded designs but, i have never seen those SBCs mentioned here on A.org.
Why you ask about them?
And you phrase a little vague question. Is there anything in particular you whish to see those cards used for?