This toner cartridge has been expertly designed to work seamlessly with your Brother printer, providing you with highest quality results, time after time. Though using cheaper, non-branded cartridges might save you money in the short-term, theyre not as compatible with your machine. Its possible that using these often-inferior products could cause printing problems and even damage your printer so why take the risk By choosing a genuine toner cartridge, youll ensure that your printer continues to perform at its very best and also that any warranty you hold remains valid, providing you with extra peace of mind all round. Brother consider the environmental impact at every stage of your ink cartridge life cycle, reducing waste at landfill. All Brother hardware and toner cartridges are built to have as little impact on the environment as possible.   Genuine Brother TN-242 laser toner cartridge - worth it every time. Suitable with Brother printer - HL-3142CW.