This is a compatible replacement laser toner cartridge to replace the Dell 310-5739 (G7028) cyan cartridge. It is guaranteed to perform with your 3000cn Dell Color Laser printer. These compatible alternatives to the Dell 310-5739 cartridges are manufactured 100% brand new by a manufacturer that is not endorsed or associated with Dell and are guaranteed by LD Products.com to work with your Dell printer. Our compatible alternatives for OEM 310-5739 laser toner cartridges and supplies are manufactured to the highest performance and quality standards and will deliver optimal prints. Our compatible laser toners are an economical alternative to expensive OEM G7028 Dell laser toners, and offer big savings over brand-name 3105739 laser toner cartridges and supplies. Since we directly import these compatible alternatives for the Dell OEM 310-5739 laser toner cartridges from an ISO-9001 certified factory, we can pass the savings on to you. The use of compatible replacement laser toner cartridges and supplies does not void your printers warranty. All of our 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.We offer a Two Year 100% Quality Satisfaction Guarantee on our alternative compatible laser toner cartridges and supplies to replace the Dell OEM 310-5739. For use in the following printers: Color Laser 3000cn. LD Products is the exclusive reseller of LD Products brand of high quality printing supplies on Newegg.