Monochrome Laser Duplex (2-sided) Printing: Integrated Duplex Print Speed: Up to 38 ppm Recommended Monthly Page Volume: 500 - 5000 pages Full-spectrum securityLexmark's comprehensive approach to product security is a design and engineering mandate across our entire product portfolio. Our security features help to keep your information safe - in the document, on the device, over the network and at all points in between.Hands-off durabilityWith its steel frame and lifetime fuser, the MS331dn is built to last.Save paper, save energyAutomatic two-sided printing is standard, along with built-in energy-saving modes that help to support ratings of EPEAT® Silver and ENERGY STAR® certified. The Lexmark Cartridge Collection Programme (LCCP) and Lexmark Equipment Collection Programme (LECP) minimise waste and support recycling (availability varies by country).Output that fitsMeasuring just 222 mm high x 368 mm wide x 366 mm deep, the business-class MS331dn fits almost anywhere. Its compact size