An FCC Class A device, the HP LaserJet Enterprise M611dn Monochrome Printer is designed for use in commercial environments. It features a resolution of 1200 x 1200 dpi and supports automatic two-sided (duplex) printing. The ISO print speed is up to 65 ppm, and the first page printout time is five seconds. The M611dn comes with a standard 550-sheet input tray and a 100-sheet multipurpose tray, both supporting up to legal-size 8.5 x 14" paper. It additionally supports up to four add-on trays for a total of six in various configurations.