Help me out on these boards please.

Here is the deal. I received these boards in with some other ewaste stuff I picked up lately. I have been told that these boards are everything from boards from an old CNC machine to boards out of a spa (?). They all appear to be new/old stock, so I would hate to just scrap them if they are of value. The thing is, I cannot find ANYTHING about them online. The closest thing I can find is a repair service, that repairs a similar board, with a slightly different model number, for something like $800 per board. (Almost wish I did not see that, because now I have my hopes up that they might be somewhat valuable.) Every time I search the numbers on the board/connectors it ends up coming up to some picture of an automated machine of some sort (cnc etc) but of course nothing of the boards themselves. So I have come here to see if the wealth of knowledge here might be able to help me figure this out. Please let me know additional pictures/angles or any other information that would help with identification. If anyone can help me 100% identify what these things are, and they are of value greater than scrap, I would be happy to throw a "finders fee" of some sort your way. Thanks in advance for all of the help.

Board 1 Front. (I have 1 of these)




Board 1 Back.


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Board 2 Front. (I have 4 of these)


Board 2 Back. (kind of. It is connected to a fairly thick piece of alum(?) )