this is TV fantasy that includes nanobots and USB pendants that control flow of electrical current, and you're concerned about veracity of technical details?
I noticed some vacuum tube circuits in the black book in previous episodes too. Now that they have burned the book, we probably won't see many more.
yeah, there are many more. The computers appear to use old green screen mono monitors, yet boot Unix or Linux. This is on the same show that has nanobots capable of being reprogrammed to repair a compound fracture of the leg.