This is a refurbished alternative to the Dell 330-3110 (U789H) black laser toner cartridge guaranteed to perform with the 7330dn laser printers. These refurbished alternatives to the Dell 330-3110 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 4inkjets.com to work with your 7330dn printer. The remanufactured replacement laser toner cartridges to replace the Dell OEM 330-3110 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 330-3110 / U789H Dell laser toner cartridges, and offer big savings over brand-name 330-3110 laser toner cartridges and supplies. Since we directly import these refurbished replacements for the Dell OEM 330-3110 laser toner cartridges, we can pass the savings on to you. The use of refurbished replacement laser toner cartridges and supplies compatible with your Dell printer does not void your printers warranty. All of our remanufactured replacement toner cartridges compatible with Dell laser printers contain a toner management computer chip stem that works with Dell Printers*, which helps the cartridge communicate more effectively with your computer. Our refurbished cartridge can also be used instead of these OEM and Dell Manufacturer part numbers: 330-3110, X730H, U789H.We offer a 100% Quality Satisfaction Guarantee on our alternative refurbished laser toner cartridges and supplies to replace Dell OEM 330-3110. LD © Cartridges are manufactured in an internationally certified ISO 9002 factory. LD © cartridges come with a 100% 365 day money back guarantee and technical support. For use in the following printers: Laser 7330dn