Hands-off durability With its steel frame and lifetime fuser, the MS431dn is built to last. Full-spectrum security Lexmark's comprehensive approach to product security is a design and engineering mandate across our entire product portfolio. Our security features help keep your information safe-in the document, on the device, over the network, and at all points in between. Solid performance, flexible connectivity Get your first page as fast as 5.9 seconds, and power through challenging jobs with a 1 GHz dual-core processor and 256 MB of memory. Connect via USB or Ethernet to give your whole team access. Print more, stop less In addition to a first page as fast as 5.9 seconds and output up to 40 pages per minutex, available Extra High Yield Unison toner provides up to 20,000 pagesxx of output. Add an optional paper tray that increases total input capacity up to 900 sheets for more printing and less downtime. Lexmark MS431dn - printer - monochrome - duplex - laser - A4/Legal - 600 x 600 dpi - up to 42 ppm - capacity: 350 sheets - USB, Gigabit LAN Group printer manufacturer Lexmark manufacturer art. No. 29S0060 Model MS431dn EAN/UPC 0734646695657 Product Description: Lexmark MS431dn - printer - monochrome - laser printer working group printer - laser - monochrome weight 9.3 kg media size class A4/Legal Max. Media size Legal (216 x 356 mm), A4 (210 x 297 mm) Printing speed Up to 42 ppm - SW (ISO/IEC 24734) - ANSI A (Letter) (216 x 279 mm) Up to 17 ppm - B/W duplex (ISO/IEC 24734) - ANSI A (Letter) (216 x 279 mm) Up to 40 ppm - SW (ISO/IEC 24734) - A4 (210 x 297 mm) Up to 17 ppm - B/W duplex (ISO/IEC 24734) - A4 (210 x 297 mm) Max Resolution (B/W) 600 x 600 dpi Image Enhancement Technology 2400 IQ Automatic Duplexing Yes Interface USB, Gigabit LAN Processor 1 GHz RAM Installed (Max) 256 MB (256 MB) Printer Language PCL 5E ,