LD Compatible Replacement for Samsung SCX-4521D3 Black Laser Toner Cartridge for use in Samsung SCX-4321, SCX-4521, SCX-4521F, SCX-4521FG, and SCX-4521FR s - Walmart.com
Samsung SCX-4521F Toner Cartridges | ComboInk
Samsung SCX-4521F Mono Laser MFP, New (SCX-4521F)-E081-113
Toner Cartridges For Samsung SCX-4521F - 4inkjets
Black Toner Cartridge Compatible with Samsung SCX-4521F (V6720)