Winning in business means working smarter. The HP LaserJet Pro MFP M428 is designed to let you focus your time where it’s most effective – growing your business and staying ahead of the competition.Dynamic securityDynamic security enabled printerProduct DisclaimerCertain HP printers are intended to work only with cartridges that have a new or reused HP chip or electronic circuitry. These printers use dynamic security measures to block cartridges using a non-HP chip or electronic circuitry. Periodic firmware updates will maintain the effectiveness of these measures and block cartridges that previously worked. Reused HP chips and electronic circuitry enable the use of reused, remanufactured, and refilled cartridges. More at http://www.hp.com/learn/ds