Laser Toner-Lexmark #521 Black, Return Program

Lexmark laser toner for: MS810de/ MS810dn/ MS810dtn/ MS810n/ MS811dn/ MS811dtn/ MS811n/ MS812de/ MS812dn/ MS812dtn. 6,000 page yield. Return program cartridge. Return Program Cartridges are sold at a discount vs the price of regular cartridges, in exchange customer agrees to use the cartridge once and return it to Lexmark for remanufacturing or recycling.