Mega Drive computer in Russia. Has a FDD drive, LPT and COM ports, PS/2 connectors for mouse and keyboard, and some kind of expansion port. Assuming it would be for memory but that doesn't seem like it got used.
@Xdqwerty, We've got the 32X version, I'm not sure if it would even run on that, considering a clone has its limitations. There's no extra port to feed in the 32X.