The ecosys m5521cdw a4 professional all rounder meets any business requirements the scan copy fax and mobile scan functions ensure an optimized and flexible workflow mobile printing support takes this to the next level and offers every office the most modern standards in technology the direct printing functions via wi fi and usb host keep your work running seamlessly up to 21 pages per minute in a4 in colour and black and white 1 200 dpi printing quality wifi and wifi direct a