Genuine OEM Lexmark MX331 adn Toners
The Lexmark MX331adn uses a separate imaging unit alongside its black toner cartridge. The 55B0ZA0 is that imaging supply, also called a photoconductor, so ordering it does not replenish the printer’s toner.
Toner Buzz carries genuine Lexmark MX331adn individual black toner cartridges, including a high-yield choice, plus the separate photoconductor unit. Choose toner or the imaging unit first, then compare the toner variants if the order concerns black toner.