I believe the SECOND board is a testing board for building electronics. It has pins for easily tying on wires at the edges, then the traces lead through a different resistor for each pin. The resistors look like they all have different values so you could work out which one you needed for the project you were working on. I'm no expert in this, but I think that's what this one is for.
If you get the arcade stuff, I may be interested in it.
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