Carrot's compatible laser toner cartridges and supplies for Canon imageCLASS MF4550d are designed to offer the best print performance, dependability and consistent yields that meet or surpass Canon OEM (Original Equipment Manufacturer) specifications for the Canon imageCLASS MF4550d and offer high-quality output. These compatible toners are brand new and are a smart alternative to high-cost OEM Canon laser toner cartridges and supplies, offering substantial savings over the brand-name laser toner cartridges and supplies. Using compatible replacement laser toner cartridges and supplies for your Canon imageCLASS MF4550d will not void your printer warranty. Carrot Ink guarantees 100% satisfaction on quality imageCLASS MF4550d laser-toner cartridges and printing supplies.