HP LaserJet 4/4M printer, Part 2: History + LJ4 series overview

In this part, we go over a history of the LaserJet 4 and 4M, as well as a general overview of the LaserJet 4 series, and their infamous track record for reliability and long service life. In the next part, we'll (finally!) overview the printer itself, and some of its features. Part 1: https://www.youtube.com/watch?v=Chwxgs-2o0A