Lexmark MX431adn Mono MFP Printer (PRLE29S0215) - Print Technology: Monochrome Laser, Functions: Copying, Color Scanning, Printing, Network Scanning, Faxing, Print Speed: Black: 42 ppm (Letter), Print Resolution: Black: 2400 IQ (2400 x 600 dpi), 600 x 600 dpi, Duplex Printing: 2-sided: Integrated Duplex, Display: 2.8 inch (7.2 cm) LCD touch panel, Processor Speed: Dual Core, 1.0 GHz, Memory: Maximum: 512 MB, Connectivity: USB, Gigabit Ethernet, Wireless (Option), Paper Handling: 100-Sheet Multipurpose Feeder, Integrated Duplex, 150-Sheet Output Bin, 250-Sheet Input, Copy Speed: Black: 42 cpm (Letter), Scan Speed: Black: 92 / 96 sides per minute, Color: 40 / 42 sides per minute, Optical Scanning Resolution: up to 600 X 600 ppi (color), Fax Transmission Speed: 3 seconds per page