Becoming more common on mains chargers, most of the design is fastened together during the moulding process. There is only a single screw (Torx T9 M2.5 x 2.75mm) in the entire product.

You could possibly pry this open, but you would likely make a big mess. Instead this has been cut in two using a fine bladed coping saw.

This was cut 1mm behind the USB port entrance.

Inside we can see the design has been split into two halves.

All of the electronics are on a single PCB on the left.

All of the mechanism and high voltage contacts are on the right hidden under plastic hood.