Genuine Lexmark toner for black C540n, C543dn, C544dn, C544dtn, C544dw, C544n, C546dtn, X543dn, X544dn, X544dtn, X544dw, X544n, X546dtn. Enjoy sharp black text and consistent, professional results for as long as the cartridge lasts. Designed to work flawlessly for clear and sharp results. Installation is intuitive and simple, letting you get back to work.
Manufacturer's 90 day warranty.