Just for the record, when you watch this movie, if you do...the IBM PCs in the CIA office are mine. I rented them to the movie. The scene is supposed to depict the CIA offices as they would have looked in 1983. I am pretty sure they would not have had IBM PCs on every desk back then. They would have had terminals running PROFs, but ... the price was right. You'll see the IBM PCs just as Professor Xavier starts talking to agent Moira MacTaggert. If you don't have the movie, you can briefly see a PC or two in the movie preview.
here is the scene, but this clip starts just after the pan through the office where the PCs are visible
X-Men: Apocalypse | "Moira’s Office” Clip [HD] | 20th Century FOX