Samsung CLP-550N Laser Printer Print resolution up to 1,200 dpi; NO NOIS technology for a quieter workplace Color print speeds up to 5 ppm, black up to 21 ppm Automatic 2-sided printing; 128 MB memory, expandable to 384 MB Network-ready with Ethernet 10/100 Base TX, optional 802.11b wireless LAN USB 2.0 and parallel interfaces; supports Windows and Linux OS; 3-year warranty