Samsung SCX-4521F is the multifunction printer that can print, scan, fax, and work as a standalone copier, and includes a 30-page automatic document feeder to make quick work of scanning, faxing, or copying multipage document. I am saying with my personal experience it's so fast and quick printer and so easy to use as well as refill toner to continue printing work. Printing quality also best and it's a energy efficient. But some time I had face several problem paper jam. I am refilling Samsung SCX-4521F toner last time but when am I going to take print printer screen showing toner is empty for a few second and after that printing was started. But all-over it's good printer
