Lexmark 21K0103 Network And Duplex Ready Colour Laser, Touchscreen, Screen 10.9 cm (4.3"), Power Source AC Supply, Processor Speed 1.33 GHz, Duty Cycle 200000, Input Media Capacity 650 sheets, Maximum Mono Print Speed (ppm) 57, Maximum Color Print Speed (ppm) 57, Maximum Print Resolution (dpi) 2400 x 600. The Lexmark CS820 A4 Colour Duplex Network 57ppm Laser Printer 21K0103 brings production-level performance and quality to the office, with the most advanced imaging technology available.