Lexmark #C52030X - Universal CMYK Photoconductor genuine
C520, C522, C524 series color laser printers - Photoconductor (Single Pack) (approx. 20,000 Yield) (part # update - now identical to # C53030X) (this is a single drum unit, your machines uses 4 of these)
Lexmark #C52034X - Multipack, CMYK Photoconductor genuine
C520, C522, C524 series color laser printers - Photoconductor (4 Pack) (approx. 20k yield/ea) (part # update - now identical to # C53034X) (this is a value pack of 4 drum units, your machines uses 4 of these universal drums)
Lexmark #C5240YH - HY Yellow Toner genuine
C524, C532, C534 series color laser printers - High Yield Yellow Return Program Toner Cartridge (approx. 5,000 Yield)
Lexmark #C5242YH - HY Yellow Toner genuine
C524, C532, C534 series color laser printers - Yellow Toner Cartridge - High Yield (5,000 pages)
Lexmark #C53030X - Universal CMYK Photoconductor genuine
C520, C522, C524, C530, C532, C534 series color laser printers - Photoconductor (20k page/yield) (this part # is identical to # C52030X)