Color Laser Duplex (2-sided) Printing: Integrated Duplex Print Speed: Up to 24.7 ppm Recommended Monthly Page Volume: 750 - 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.Compact and durableCompact and lightweight, the CS431dw fits almost anywhere. But its steel frame and long-life imaging components mean that its also built to last.Colour you can count onGet rich, vibrant colour in seconds with Lexmarks unique Unisontoner. And easy-to-change Extra High Yield replacement cartridges give you more printing and less downtime.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 Program