I have found the answers to the controller board questions I had. Right in front of me, again. I see the newer controller board is the smaller, more efficient board with probably more functionality, Imagine that. There is a nice diagram here
http://www.deskcnc.com/controller2nd.html I guess the kit photos (IMserivce) show the older controller boards here. I understand the new 2nd generation controller comes with the kit though.
http://www.cadcamcadcam.com/index.as...ATS&Category=5