This reminds me of my old workplace. Government owned company where everything was running on MS Excel, SAP, fax machines [0] and prayers from operative IT office.
I had to go to one of the more "exotic" server rooms, placed in a basement and saw a very old desktop stuffed on the bottom of a rack. Covered with dust, open side panels, plastic turned yellow, you know how old and forgotten hardware looks like. This had a new-ish post-it with the message: "this runs all of the fax infrastructure. you turn it off, you explain it to the CEO".