The Lexmark MS811dn network-ready laser printer with internal two-sided printing, an 800 MHz dual-core processor & 512MB of memory prints up to 60 ppm. Improve your print speeds by taking advantage of up to 2.5 GB of memory, an 800 MHz dual-core processor & Gigabit Ethernet. Print up to 30, 000 pages per month & enjoy fewer maintenance hassles with our state-of-the-art paper handling. With a maximum input capacity of up to 4, 400 sheets & an extra high yield toner cartridge, youll rarely have to add paper or change cartridges. Print up to 60 pages per minute, & produce your first page in as little as 4.4 seconds. With built-in two-sided printing & the ability to print on diverse materials, you can do more for your business & use less paper.