HP LaserJet Enterprise M507dn laser printer Get a quality printer for your business with this compact, quiet and efficient mono laser printer. This laser printer is designed for medium-sized workgroups. Highlights: - Automatic duplex printing - Enterprise security features - Low energy consumption This printer is intended to work only with cartridges that have a new or reused HP chip, and it uses dynamic security measures to block cartridges using a non-HP chip. Regular firmware updates ensure that these measures remain effective. A reused HP chip enables the use of reused, recycled and refilled print cartridges. More at: http://www.hp.com/go/learnaboutsupplies