The good news was that 60% of the printers they tested, including eight HP LaserJet 4050 models, four Ricoh Aficio models and one Toshiba Studio, did not emit any particles.

With this in mind, I tried setting up one of our old HP LaserJet 4050 printers with built-in network capability. I connected the printer to my home network via the switch, but now I’m not sure how to ...