C540X31G C54X/X54X DEVELOPER UNIT BLACK 30K Wearing Williams and the 41

and the 41

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C540X31G C54X/X54X DEVELOPER UNIT BLACK 30K Wearing Williams and the 41Specifications 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 between printer and cartridge for value, quality and environmental responsibility you can count on. Unit yields up to 30,000 pages based on approximately 5 percent coverage per color at factory default