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. Features yield value 6,000 compatible with: b2442dw, mb2442adwe features unison toner for outstanding imaging quality, from the first page to the last designed to provide exceptional value, reliability and durability in the unison print system