HP MAIN-14421 Laserjet Enterprise M604dn Monochrome Printer, (E6B68A) Take productivity to the next level. Monitor jobs and settings quickly with the 4-line display and use the 10-key pad for PIN printing. Meet high-volume demands with automatic two-sided printing and versatile paper traysup to 3600 sheets. Improve efficiency. Add paper-handling accessories to presort jobs, print on different media, and more. Advanced capabilities, easy management. Easily expand this printer as solutions advance and workgroup needs grow, with add-on, updatable features. Protect sensitive dataat rest or in transitwith a variety of embedded and optional security solutions. Easily take command of your printing environment from one central locationwith HP Web Jetadmin. Meet business needs in the office and beyond. Easily print from a variety of smartphones and tabletsgenerally no setup or apps required. Less energy, more efficiency and savings. Save energyHP Auto-On/Auto-Off Technology turns your printer on when you need it and off when you don't. Conserve resourcesthis printer has lower total electricity consumption than any device in its class. One-year limited hardware warranty; 24-hour, 7 days a week Web support