Print outstanding documents with lexmark's c540a1cg c54x, x54x return program toner cartridge in cyan. This particular cartridge has an average yield of 1,000 standard pages. This cartridge is also a part of lexmark's return program wherein cartridges are patented and sold at a discount in exchange for the customer's agreement to the license requirement that the cartridges will be used only once and returned only to lexmark for remanufacturing and/or recycling. The return program cartridges are designed to stop working after delivering a fixed amount of toner.