OKI C831cdtn. Maximum resolution: 1200 x 600 DPI, Print technology: LED, Maximum duty cycle: 75000 pages per month. Print speed (black, normal quality, A4/US Letter): 35 ppm, Print speed (colour, normal quality, A4/US Letter): 35 ppm, Print speed (black, normal quality, A3): 20 ppm. Internal memory: 256 MB, Maximum internal memory: 768 MB. Processor clock speed: 800 MHz. Standard input capacity: 830 sheets, Maximum input capacity: 1990 sheets, Multi-Purpose Tray capacity: 100 sheets