Print Speed (Black): 29 ppm Effective Resolution(Max): 1,200 x 1,200 dpi Print Language: PCL6/5e, SPL Processer 533 MHz Memory: 64 MB Paper Capacity: 250 sheets cassette, 1 -sheet multi-purpose bypass Paper Type: Plain, Thin, Recycled, Thick, Archive Connectivity: Hi-speed USB 2.0, 10/100 Base TX Ethernet Monthly Duty Cycle: 12,000 pages Toner Yield: Standard: 1.5K; High: 2.6K (starter 1K) Special Features: Built in Auto Duplex, ECO Mode; FPOT less than 8.5 seconds (from Ready Mode); noise level less than 50 dB, Power Consumption: Sleep Mode: less than 1.2W; Ready: less than 45W; Peak: 330W. Output tray dust cover OS Compatibility: Windows 2000/XP/Vista/2003 Server/2008 Server, Various Linux OS, Mac OS X 10.3 10.6