Robust Pro Xpress M4020 3820 3320 series feature print speeds of up to 40 ppm, powered by a Cortex™-A5 core processor & up to 256MB of memory. High speed & performance enable businesses to accelerate document & image processing for increased efficiency. * 40ppm & 256MB of memory are available on M4020ND model only. 38ppm & 128MB of memory are available on M3820DW, M3820ND & M3820D models only. 33ppm & 128MB of memory are available on M3320ND model only. The printers’ multipurpose tray supports media of up to 220 gsm (grams per square meter) in weight, which offers more printing choices for professional documents. Numerous labels, cards & envelopes can be printed using the multi-purpose tray with ease. This ability virtually eliminates the time it takes to feed sheets one at a time. Easy Eco Driver software, granted the 2012 Outstanding Achievement in Innovation award from Buyers Labouratory (BLI), saves users up to 20 percent on toner. The software also reduces energy consumption. Users have the option of removing images, converting them from bitmap to sketch, & removing text to save toner using the Toner Saving Mode. Central Print Usage Control, activated through the Sync Thru™ Admin Job Accounting feature, enables managers to assign users to specific printers. Users can also be assigned"as for the number of pages or copies they can make per printer. Pro Xpress M4020 3820 3320 series offers diverse laser toner cartridge options from standard-yield laser toner cartridges that typically yield 3, 000 standard pages to ultra-high yield laser toner cartridges that can yield 15, 000 standard pages, which meets every businesses’ needs for reducing cost per page. An integrated toner system contains the imaging unit & toner cartridge in one convenient package. This integrated toner system is the preferred choice for businesses with a heavier printing volume who require a lower CPP & easier maintenance.