About this item: 
The Lexmark MX511de MFP with print, copy, fax, scan and email functions prints up to 45 ppm. Included are 2-sided printing and 350-sheet standard input. 
Improve your print, scan and copy speeds by taking advantage of up to 2.5 GB of upgradable memory, an 800 MHz dual-core processor and Gigabit Ethernet. 
A 4.3-inch color touch screen provides access to preinstalled productivity solutions and lets you operate the system through smart and intuitive navigation. 
If you can use a mobile phone application, you can use our pre-loaded solutions. Touch the screen and access shortcuts to scan, print or send faxes, emails and other business-critical documents fast