[lucretian]

> * The controllers have a custom port to connect, and a little magnet-looking thing next to it

the thing next to the port looks like an optical sensor to me.

[VikingCoder]

You're probably right.

https://imgur.com/9OBN31C

At first I thought it was a dimpled magnet. Now it looks more like a lens covering a projector and another covering the receiver.

[xnx]

I think that's for the mouse feature.