Here's an overview of the 575 board, showing the connector for orientation. The top of this picture is the end of the board that goes into the machine. Circled in red is the area shown in the next picture.

Here's the "bump" and the reason we need to modify the CC so extensively--the trace-to-trace width across the board is just exactly the width of the CC case.

Here's what the clip on the upper-left of the plastic frame looks like. The right side one used to look like a mirror image of this one.

As you can see, it's gone missing. Gotta make room for the right-shifted A/B connector.