Connectivity centralIn addition to built-in Ethernet and USB connectivity, standard Wi-Fi makes it easy for mobile users to get output via the Lexmark Mobile Print app, as well as Mopria® and AirPrint technologies. And our new Wi-Fi setup wizard simplifies wireless configuration.Color you can count onGet rich, vibrant color in seconds with Lexmark’s unique Unison™ toner. With toner yields up to 4500 pages**, easy-to-change high-yield replacement cartridges for the CS331dw give you more printing and less downtime. And if you run out of color toner, you can keep printing in black.Hands-off durabilityWith its steel frame and long-life imaging components, the CS331dw is built to last.Full-spectrum securityLexmark's comprehensive approach to product security is a design and engineering mandate across our entire product portfolio. Our security features help keep your information safe—in the document, on the device, over the network and at all points in between.Compact form factorMeasuring just 9.6 inches high x 16.2 inches wide x 15.5 inches deep (243.7 mm high x 411.2 mm wide x 394.1 mm deep), the CS331dw fits almost anywhere. Its compact size and light weight make it easy to ship, easy to set up and easy to move.Save paper, save energyAutomatic two-sided printing is standard, along with a built-in energy-saving mode that goes from sleep to print to sleep with nothing to set. Plus, it’s rated EPEAT® Silver and is ENERGY STAR® certified.