I have a case of those Naki Game Saver+ for the SNES kicking around somewhere in my storage totes.

I've never actually used one before. I'm pretty sure I got one as a curiosity and there was a whole 6-pack of them for sale for the same price as a single one, so I said meh, why not? Just never got around to testing it out. That was like 15+ years ago.

Maybe I'll dig them out and finally give it a try.