Marketing Information: Developer unit is designed for use in your Lexmark C540dw, C540n, C543dn, C544dn, C544dtn, C544dw, C544n, C546dtn, X543dn, X544dn, X544dtn, X544dw, X544n, X546dtn, X548de and X548dte. Superior Lexmark design means precision pairing...