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 C540X71G Drum Photoconductor Black C540 C540n C543 C543dn C544 C544dn C544dtn C544dw C544n C546 C546dtn X543 X543dn - Sun Data Supply
Lexmark C540 Toner Cartridges
Lexmark C540 HY Toner Set - InkCartridges
Compatible Lexmark C540 High Yield Toner Cartridge for C540, C543, C544, C546 4 Pack
Clover Imaging Remanufactured High Yield Magenta Toner Cartridge for Lexmark C540/C544/X543/X544 - Office Supply Hut
Amazon.com: Renewable Toner C540H1MG Compatible High Yield Replacement for Lexmark C540 C540H | for Use in C540 C543 C544 C546 X543 X544 X546 X548 | Printer Ink Cartridge (Magenta) : Office Products