HP OfficeJet Pro X451dn Printer - Iso speed up to 36ppm black and 36ppm color. Max print speed is 55pm black and 55 pm color. First page out is as fast as 9.5 seconds black/color. Print resolution black 1200 x 1200 optimized dpi from 600 x 600 input dpi. Color is up to 2400 x 1200 optimized dpi from 600 x 600 input dpi. 4 print cartridges. Mobile printing capability with HP ePrint, HP ePrint Mobile Apps, Google Cloud Print, and Apple AirPrint. 512 MB memory. 792 Mhz processor speed. Duty Cycle up to 50,000 pages. 500 sheet input tray, 50 sheet multi purpose tray, Optional 500 sheet tray, and 300 sheet face down output bin.

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