Inktoneram Compatible Toner Cartridge Replacement for HP C9730A 645A LaserJet 5500 5500n 5500dn 5500dtn 5500hdn 5550 5550n 5550dn 5550dtn 5550hdn (Black) This package contains: 1 Inktoneram Replacement toner cartridges to replace HP 645A ( C9730A ) Black Toner cartridge. (THIS IS A COMPATIBLE REPLACEMENT PRODUCT ONLY. THIS IS NON-OEM .) To replace Cartridges with part numbers : C9730A. Page Yield : 13,000 Pages / each cartridge at 5% coverage Printer Compatibility: HP LaserJet: 5500, 5500n, 5500dn, 5500dtn, 5500hdn, 5550, 5550n, 5550dn, 5550dtn, 5550hdn Warranty: Our Compatible Inktoneram Replacement toner cartridges to replace HP 645A cartridges are manufactured under strict ISO-9001 standards. They are excellent economical alternatives to the high-cost OEM cartridges. These cost-effective toner cartridges will provide high quality prints that meet OEM standards and are guaranteed against defect. Our compatible Replacement toner cartridges to replace HP 645A cartridges come with a 90 day 100% money back guarantee.