GE PDM. Question, if anybody know the purpose of components inside the Top Casing of a PDM that connects a 10 pin to the center of the Mainboard? Externally, it appears that something glides/attaches to the top side of the Module with GE logo, there are two Ports that engages. 3rd party Top covers omits this feature of course. Nothing in the manual and nothing online that I could find.