Lexmark MS521dn Mono Single function Printer (PRLE36S0305) - Print Technology: Monochrome Laser, Print Speed: Black: 44 ppm (A4), Print Resolution: Black: 1200 x 1200 dpi, 2400 IQ (2400 x 600 dpi), 300 x 300 dpi, 600 x 600 dpi, 1200 IQ (1200 x 600 dpi), Duplex Printing: 2-sided: Integrated Duplex, Display: 2.4-inch (60 mm) Color LCD display, Processor Speed: 1.0 GHz, Memory: Maximum: 512 MB, Connectivity: Ethernet Network, Wireless Option, Paper Handling: 100-Sheet Multipurpose Feeder, Integrated Duplex, 150-Sheet Output Bin, 250-Sheet Input