Black & White Laser Printer Duplex (2-sided) Printing: Integrated Duplex Print Speed: Up to 35 ppm Recommended Monthly Page Volume: 4,000 - 20,000 Pages The Lexmark MX931dse large-format black and white multifunction is designed for security, versatility and performance for large workgroups at speeds of up to 35 pages per minute.Secure by designLexmark security features help keep your information safe - in the document, on the device, over the network and at all points in between. Always improving security, we now include a standard Trusted Platform Module, which delivers authentication, system integrity checks, and cryptographic capabilities to create a unique digital system fingerprint.Always focused on sustainabilityAutomatic two-sided printing is standard, along with built-in energy-saving modes that help support ratings of EPEAT® Silver and ENERGY STAR® certified. The award-winning Lexmark Cartridge Collection Programme (LCCP) and Lexmark Equipment Collection Programme (LECP) mini