2 paper trays 2 Laser technology Laser HP LaserJet 9000dn, Laser, 600 x 600 DPI, A3, 50 ppm, O, Network ready HP LaserJet 9000dn. Print technology: Laser. Number of print cartridges: 1, Maximum duty cycle: 300000 pages per month. Maximum resolution: 600 x 600 DPI. Maximum ISO A-series paper size: A3. Print speed (black, normal quality, A4/US Letter): 50 ppm, Duplex printing: O. Network ready. Product color: White https://www.pcmag.com/archive/crisp-prints-blistering-pace-14355 Not many laser printers can go through a stack of paper as fast as the HP LaserJet 9000n ($4,840 street). With a claimed speed of 50 pages per minute-and a measured speed close to that, according to our tests-the 9000n is one of the fastest printers ever...