Sealed-Bag C540H1CG Cyan High Yield Toner Cartridge for Lexmark C540 C544 X544 | eBay
Lexmark C544X1CG C544X2CG Toner Cartridge Cyan C544 C544dn C544dtn C544dw C544n C546 C546dtn X544 - Sun Data Supply
Lexmark C544 Extra HY Toner Set - InkCartridges
Amazon.com: Lexmark C540, C543, C544, C546, X543, X544, X546 Series High Yield Magenta Return Program Toner Cartridge (2,000 Yield), Part Number C540H1MG : Office Products
Lexmark C544 Extra HY Toner Cartridge Set - 123inkjets
Compatible Toner for Lexmark C544/X544 (C544X2YG) Extra HY Yellow
Compatible Lexmark C544X1MG Extra High Yield Toner Cartridge Magenta for C544, C546, X544