The HP Color LaserJet 4550DN prints color at 4 ppm and 16 ppm black, has 3 large paper trays (150 sheet, 250 sheet, 500 sheet), handles fast and complex jobs with a 233MHz processor and 128MB memory and is Internet-enabled with embedded web server. It is network ready with HP Jetdirect 610N internal print server and also includes an automatic duplexer for 2-sided and booklet printing.