>>23596833
It's just their own thing, they explain it as a data transfer mode for the Type 2 Cyber Newtype OS BUNNyS which is either a different variant or a precursor to the Type 3 BUNNyS we know. It's mounted in the head and the cables are for feeding large amounts of data.
Please don't question why the core unit looks like a coffin or why there's an option for restraints around the head.