Nintendo Mega-Connector

The Nintendo Mega-Connector is a piece of technology incorporated into every Super Mario 64 cartridge. It is a chip that connects wirelessly to a large server in the Nintendo HQ that gives all the space any cartridge would need for any level of personalization. The server itself is rumored to be the size of a regular house, though this is unconfirmed. It is currently unknown how it uses the space from the servers.

Anonymous Confirmation
Near when the personalization A.I. was first discovered, an anonymous user once reached out to another anonymous user and told them about the Nintendo Mega-Connector. Below is a transcript of what was said:

"Okay, so I've seen you've been digging deep into this whole "Every copy of Super Mario 64 is personalized" thing, and I respect it. It's a very interesting rabbit hole. Though there's a piece of the puzzle you're all missing: the Nintendo Mega-Connector. Essentially, I worked at Nintendo, and I made this thing, the Mega-Connector, to give the personalization A.I., or as some people like to call him, Stanley (I find that pretty funny), essentially infinite space to add things to the game. Essentially, the Mega-Connector would connect to a satellite, which connects to a large server in the Nintendo HQ with essentially infinite space to add content to the game with. Essentially, an ultimate cartridge expansion. We could monitor what is added, study, and improve the AI for future projects. However, when we saw IT, the thing you call the Wario Apparition, we decided to scrap using it in future games. We've still been analyzing the Mega-Connector's data, however. I believe we've recently found how to make an A.I. without the threat of IT. I will not say anymore."