The Brother HL-3040CN laser toner cartridges from E-Z ink Products are 100% brand new compatible laser cartridges that are Guaranteed to meet or exceed the print quality of the OEM Brother HL-3040CN laser toner cartridges. Purchasing our Brother HL-3040CN cartridges is an excellent way to save money without sacrificing quality. Our compatible Brother HL-3040CN laser toner cartridges have a '100% Satisfaction Guarantee'. The use of our compatible laser toner cartridges for the Brother HL-3040CN does not void your printer's warranty. OEM (Original Equipment Manufacturer) laser toner cartridges and drum units are also available for your Brother HL-3040CN.