The Lexmark MS821dn features a first page in just 4.5 seconds, output of up to 55 [52] pages per minute and two-sided printing. A combination of 1-GHz dual-core processor and 512 MB of memory (upgradeable to 4.5 GB) has the power to handle demanding tasks right now while providing a secure, upgradeable framework for future advances in product functionality. And all two-sided-printing models in Lexmark’s most energy-efficient line of large-workgroup monochrome products ever are rated EPEAT® Silver and ENERGY STAR® (2.0) certified. With access to input capacity of up to 4400 sheets, replacement toner cartridges that go as high as 15,000 pages, long-life imaging unit and a fuser that may never need replacement, you’ll spend more time printing. Plus, innovations in part replacement and accessibility help you resolve problems quickly. A first page as fast as 4.5 seconds sets the stage for printing and copying up to 55 [52] ppm*. And support for large workloads is built in, with recommended monthly page volume as high as 350,000 pages.