Translating step 3
With the plastic removed, we get a look at the board itself. Now remove the two other screws at the back (also marked out in orange).
Before being able to lift the whole board out, you will also have to unscrew a nut where the antenna was attached to. This can easily be done with a pair of pliers.
With that done, simply pull the connector out and lift the border 'up and out'.