Hi,
1)Go to the below link.
http://www.samsung.com/us/support/downloads/global
2)Under category, click
multifunction printers.
3)Under subcategory,Click
Laser multifunction printers
4)Under model code, Select your model name
SCX 4521F
5)Click
find it
6)You will be shown results of manuals drivers and softwares.
7)click the
drivers tab and download the driver
8)good luck
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