X544n X546dtn X548 X548de X548dte. Lexmark C540 C540n C543 C543dn C544 C544dn C544dtn C544dw C544n. C546dtn X543 X543dn X544 X544dn X544dtn X544dw. - Replaces: Lexmark 540BK 540C 540M 540Y. 1 x 540 Cyan.
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