HP Color LaserJet 2550L - printer - color - laser (Q3702A#201) 600 x 600 dpi color and black resolution Up to 4 ppm color, 20 ppm black; manual duplexing 264 MHz processor, 64 MB memory, expandable to 192 MB Parallel and USB 2.0 ports, optional networking PC and Mac compatible; 1-year limited warranty