I don't have this board, but I am no stranger to cheaper gamer boards. This one looks like a pretty typical Filco knockoff. A couple of things to try: first, if it seems almost ready to come off, try to GENTLY push to see where there's still something holding it together, and then see if that something might be hiding under a label or rubber foot; second, it does appear that this one has a top case, and most cheap top cases will attach with clips molded into the plastic. Get a plastic spudger-like tool from an electronics repair kit or similar (some people have luck with used gift cards or sturdy guitar picks) and try to find the seam on the bottom of the keyboard. If you can get the top case off, you might find more screws to try. Some of the gamer boards are unadvertised 3-pin Outemu style hotswap, but don't count on it.