Technology : Inkjet Max Resolution: Black (best): Up to 1200 x 1200 dpi, Color (best): Up to 2400 x 1200 optimized dpi from 600 x 600 input dpi (on HP Advanced Photo Papers) Print Speed : Up to 40 ppm Automatic Duplexing : Automatic Media Sizes : Letter, oficio, legal, statement, executive, 3 x 5 in, 4 x 6 in, 5 x 7 in, 5 x 8 in, envelopes (No. 10, Monarch) Total Media Capacity : Up to 500 sheets Interface : USB, LAN Monthly Duty Cycle (max) : Up to 50,000 pages A4 RAM: 768 MB