I took a pair of wire cutters, snip, snip. Used a needle nose to break them out. Cleaned it up with my knife. It is just a couple of tabs that fit into the bottom back of the US cart slots. I like this type of regional lockout, so simple. (The N64 is the same type of lockout.) My Famicom games work great in my SNES. My SNES will not work with my flatscreen tv. It only shows a black&white picture. I still have my tube, my retro gaming TV.