Summary: Jen59 is correct. First, the three covers Sony is selling at store.sony.com do not have cutout for the connector of the dock, so they don't work with this dock. I ended up buying two more covers with cutout, but even they do not work because the connector of the dock is not sticking out high enough even with the adapter that came with the dock. What is Sony thinking?
Summary: It comes with two inserts into the charger. Standard for phone without case and wider one for cases. I bought a case on this site and it does not work. The phone with case fits into the charger but magnetic device does not work thru the case. So does not charge with case on. Not sure what cases Sony means this works with!