my last shipment had some motherboards reclassed so i am trying to get them figured out. this one came out of an old dell server. it had zeon pinless cpu's. the sockets are rectangular. 1 5/8" on one side and 1 7/8 on the other. in addition the second socket is on a seperate removable board. please help.

That is a green small socket motherboard.

The board with the CPU socket and RAM slots should be removable, that itself is a backplane board.