Print Speed (Black): 25 ppm Print Speed (Color): 25 ppm Effective Resolution(Max): 9,600 x 600 dpi Print Language: Postscript 3, PCL5C, PCL6, PDF V1.7, SPL-C Processer 533 MHz Dual CPU Memory: 256 MB (512 MB Max) Paper Capacity: 250 sheets, 50 Multipurpose tray (Max Input 820 sheets) Paper Type: Plain, Thin, Thick, Cardstock, Thicker, Hole Punched, Transparency, Pre-Printed, LetterHead, Recycled, Archive, Bond, Label, Envelope, Cotton, Colored, Glossy Connectivity: USB 2.0, Gigabit Ethernet, Direct USB Monthly Duty Cycle: 60,000 pages Toner Yield: Standard: CMY (1.5K), K (2K); High: CMY (3.5K), K (6K); Waste Toner Bottle B/C (14K/3.5K) Warranty: 1 year parts and labor Special Features: Built-in duplex, FPOT 17 seconds from ready, Gigabit Ethernet, 16 x 2 line LCD/Navigation Compass/3x4 Keypad for easy pin printing, maximum paper capactiy 820 sheets, Power consumption: less than 10W when ready, less than 1W in sleep, less than 450W printing, 1.49 kWh TEC Optional Cassette : 520 sheets (CLP-S680A) Optional Memory: 512 MB (ML-MEM370) (replaces on-board memory) OS Compatibility: Windows (32/64 bit) XP/2003 Server/Vista/2008 Server/2008 Server R2/Windows 7, Various Linux OS including Red Hat Enterprise 4 and 5, SuSE 10.1, OpenSuSE 10.2 11.2, Fedora Core 5 13, Ubuntu 6.06 10.04, Mac OS X 10.3 10.7, CiTRIX Server, Various Unix. Samsung Distributor