After you remove the 4 bottom screws the entire CDM can be removed.
Then if you remove the other 4 screws that hold the CDP, you can remove the plate.
Then if you want you can connect the two again lol just for fun; more importantly though you will notice the spaces for adjustment at the front of the CDM mount.
another thing about the plate is that the screws are counter sunk so that it looks trick and all the edges have been machined for the professional look.