The SAMSUNG CLP-620ND. Print Speed (Black): 21 ppm Print Speed (Color): 21 ppm Effective Resolution(Max): 9,600 x 600 dpi Print Language: SPL-C, pcl5, PCL 6 Processer 360 MHz Memory: 256 MB Paper Capacity: 250 sheets + 100 Multipurpose tray Paper Type: Plain Paper, Thick, Thicker, Extra thick, Thin, Cotton, Archive Paper ,Bond, Card Stock, Labels, Preprinted, Color Paper, Envelope, Recycled ,Transparancy,Glossy Connectivity: USB 2.0, Ethernet 10/100 Base TX Monthly Duty Cycle: 65,000 pages Toner Yield: Standard: CMY (2K), K (2.5K); High: CMY (4K), K (5K) Warranty: 1 year Special Features: Built-in duplex, FPO 20 sec from ready, up to 512 MB of memory, networking, 16 x 2 line LCD, maximum paper capactiy 850 sheets, Power consumption: less than 20W when ready, Max less then 1400W OS Compatibility: Windows 2000/XP/2003/Vista(include 64bit)/Windows 7, Windows server 2008 R2, Various Linux OS including Red Hat 8.0 9.0, Mandrake 9.2 10.1, SuSE 8.2 9.2 and Fedora Core 1 4, Mac OS X 10.3 10.6, Citrix Presentation Server, Windows Terminal Services