Relevant item from The Mash Report: https://www.youtube.com/watch?v=NrBop7xvcIU

It’s an old IBM “Bus and Tag” peripheral interface cable. Before my time – I’ve seen 'em, but only in parts bins, not in actual use.

Reminds me of this:

Leading to my favorite conspiracy theory, that his shirt choice is really a subtle viral marketing campaign. I call this theory “Tom Scott is in the pocket of Big Red Shirt”.