HP Color LaserJet Enterprise LaserJet Enterprise M554dn Color Printer, Ethernet Only; Duplex. Print technology: Laser, Colour. Number of print cartridges: 4, Maximum duty cycle: 80000 pages per month. Maximum resolution: 1200 x 1200 DPI. Maximum ISO A-series paper size: A4. Print speed (black, normal quality, A4/US Letter): 33 ppm, Duplex printing. Display: LCD. Network ready. Product colour: White Front-facing USB printing; Two-sided printing Print Print speed up to 33 ppm (black) and 35 ppm (colour) HP ImageREt 3600