This is a refurbished alternative to the Dell K442N high yield black laser toner cartridge guaranteed to perform with your Dell 2145cn laser printer. These refurbished alternatives to the Dell 330-3789 cartridges are not refurbished Dell OEM cartridges. They are Non-OEM products that have been modified and refurbished by a remanufacturer that is not endorsed or associated with Dell and are guaranteed by LDProducts.com to work with your Dell printer. The remanufactured replacement laser toner cartridges and supplies to replace the Dell OEM K442N are manufactured to the highest performance and quality standards and will deliver optimal prints. Containing up to 60% new parts including OPC drums, wiper blades, and other internal parts, our refurbished laser toner cartridges and supplies are an economical alternative to expensive OEM 3303789 Dell laser toner cartridges, and offer big savings over brand-name K442N laser toner cartridges and supplies. Since we directly import these refurbished replacements for the Dell OEM K442N laser toner cartridges from an ISO-9001 certified factory, we can pass the savings on to you. The use of refurbished replacement laser toner cartridges and supplies compatible with specific Dell printers does not void your printers warranty. All of our remanufactured replacement toner cartridges compatible with Dell laser printers contain a toner management computer chip system that works with Dell printers*, which helps the cartridge communicate more effectively with your computer. Our refurbished cartridge can be used instead of these OEM and Dell Manufacturer part numbers K442N, 330-3789. Replaces lower yield part numbers F916N, 330-3785.We offer a Two Year 100% Quality Satisfaction Guarantee on our alternative refurbished laser toner cartridges and supplies to replace Dell OEM K442N. For use in the following printers .