Lexmark E352dn Mono Laser Duplex, Network. Maximum resolution: 1200 x 1200 DPI, Print technology: Laser, Maximum duty cycle: 35000 pages per month. Print speed (black, normal quality, A4/US Letter): 33 ppm, Time to first page (black, normal): 6.5 s. Internal memory: 32 MB, Maximum internal memory: 160 MB. Processor clock speed: 366 MHz. Standard input capacity: 250 sheets, Maximum input capacity: 800 sheets