Being successful in business means working smarter. The HP Color LaserJet Pro M454 printer is designed to allow you to focus your time where you can achieve the highest efficiency in growing your business and securing your edge over the competition. Printers with dynamic security features: Some HP printers are only intended for use with cartridges that contain new or reused chips or electronic circuits from HP. These printers employ dynamic security measures to block cartridges with a non-HP chip or a non-HP electronic circuit. Regular firmware updates maintain the effectiveness of these measures and block cartridges that previously worked. Reused HP chips and electronic circuits from HP allow for the use of reused, remanufactured, and refilled cartridges. Duplex printing. Print speed of up to 28 pages/min (black and white) and 28 pages/min (color). 600 x 600 dpi, up to 38,400 x 600 dpi interpolated.