Lexmark GSA Black Extra High Yield Return Program Toner Cartridge, 20000 Pages, Unison Technology, Laser Print, Compatible with MX421ade/MX521ade/MX521de - 56F0X0G (1 Year Warranty)
Consistently outstanding image quality. Long-life system reliability. Superior sustainability. Innovative shake-free print system. Lexmark Cartridge Collection Program Going green has never been easier. Recycle all your used Lexmark supplies by letting us take care of the details. It's simple, smart and always free. Best Together Genuine Lexmark supplies are engineered to work Best Together with your Lexmark printer, delivering excellent print quality from the first page to the last. Lexmark Return Program Cartridges Lexmark Return Program cartridges are print cartridges sold at a discount in exchange for the customer's agreement that the cartridges will be used only once and returned only to Lexmark for remanufacturing or recycling. These single-use only cartridges will stop working after reaching end of the rated life established by Lexmark (a variable amount of toner may remain when replacement is required). These cartridges may also automatically update the printer memory to