D220 Pro missing something.

[Confused]

This is the clearest photograph I could find. One connection is labelled Aux, and the other Main. In my case the Main is connected straight to the CI board. Thanks to @Elztalbiker for posting this on the forum. 

look at the picture you posted, the ADH board isn’t look right to me, all Pro series should come with a new ADH board which the gold part is covering almost the whole surface, in your picture it is still look like the previous non pro version’s ADH.

The ADH board in the picture is designated rev 6.022, which is correct for a 220Pro.  The 250 / 1000Pro has the gold covering the whole surface, the 220Pro does not.