Genuine OEM Lexmark XS736 Toners
For the Lexmark XS736, 24B5805 is listed as a magenta toner cartridge and 40X8110 as a fuser unit. These are different supply types, so the fuser name should stay separate from the toner color when selecting an item.
Genuine Lexmark magenta toner and the fuser unit are listed at Toner Buzz for the XS736. Match the product name and full part code to the supply you need.