Ditto for the 2013 27”. One extra screw
Same here. 2013 27”. If you remove two of the tiny screws along the bottom edge then it comes out.
I'm struggling with this step. I presume that the tab to which you are referring is behind the connector. I can see a plastic protrusion there but it does not move when I push it. Just to get my finger behind it requires the power board to be moved quite a bit btw.