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
Compatible toner cartridge for Samsung SCX-4521 ML4521 SCX4521 ML-4521 for Samsung SCX-4521F/4321/4521HF/4521HS printer
Amazon.com: greencycle Compatible Toner Cartridge Replacement for Samsung SCX-4521D3 SCX-4521 SCX4521 Work with SCX-4321 SCX-4521 SCX-4521F SCX-4521FG SCX-4521FR SCX-4321F Printer (Black, 2-Pack) : Office Products
Samsung SCX-4521F Mono Laser MFP, New (SCX-4521F)-E081-113-0
Amazon.com: greencycle Compatible Toner Cartridge Replacement for Samsung SCX-4521D3 SCX4521 Use for SCX-4521 SCX-4521F SCX-4521FG SCX-4521FR SCX-4321 SCX-4321F Printer (Black, 1-Pack) : Office Products