More speed better results the lexmark ms510dn network ready laser printer has internal two sided printing an 800 mhz dual core processor 256mb of standard memory 350 sheet standard input a print speed of up to 42 ppm features fast set up instructions are easy yoursquoll be up and running in minutes high resolution graphics with up to true 1200x1200 dpi resolution images and graphics stay crisp and sharp lexmarks unisontrade toner ensures consistent quality too nbsp