HP LaserJet Pro M404dn Printer comes with Automatic (default) Duplex print options. In this printer, it has Black (A4, normal): Up to 38 ppm; Black (letter, normal): Up to 40 ppm; Black (A4, duplex): Up to 31 ipm; Black (letter, duplex): Up to 33 ipm Print speed. This printer's first page out is about Black (A4, ready): As fast as 6.3 sec; Black (A4, sleep): As fast as 8.8 sec. Here use the Laser Print technology with HP FastRes1200, HP ProRes1200, Economode Print resolution technology , where Print resolution is about Black (best) Fine Lines (1200 x 1200 dpi); Black (normal) Normal (Native: 600 x 600 dpi, enhanced up to 4800 x 600 dpi); Black (fine lines) Fine Lines (1200 x 1200 dpi). This printer can read HP PCL 6, HP PCL 5c, HP postscript level 3 emulation, PDF, URF, PWG Raster Standard print languages. In this printer will conected 1 Hi-Speed USB 2.0; 1 host USB at rear side; Gigabit Ethernet 10/100/1000BASE-T network. Apple AirPrint; Google Cloud Print; HP ePrint; HP Smart App; Mobile Apps; Mopria Certified; ROAM capable for easy printing Mobile printing capability. This laserjet printer has 256 MB standard and maximum capacity memory, speed 1200 MHz Processor. This printer is capable for Up to 80,000 pages Duty cycle (monthly),750 to 4000 recommended monthly page volume. The LaserJet Pro M404dn HP printer comes with 01 year warranty.