In order to get small socket for a soldered cpu board you need to have a cpu, north bridge, south bridge, at least one i/o controller and atleast one gold pin port. Board one (bottom) doesn't make it.
Board 3 however does. There's the qpfp socket for the cpu. One for the controller/co-proc. I/o and bridge chips. And a gold port.
Board 4 may cross the telco threshold. There's no steel and 4 gold ports. Gold pins. Etc. I would keep it separate in your shipment and let them decide on site.
Rest are peripheral.
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