This is a replacement cartridge for the Hewlett Packard Q5950A (643A) black laser toner cartridge which is manufactured by LD and is guaranteed to perform with your HP printer. It replaces the original HP Q5950A toner cartridge. LD remanufactured replacement Q5950A laser toner cartridges are specially engineered to meet the highest standards of quality and reliability you can expect from LD. Our toners have exceptional yields that meet or exceed the OEM (Original Equipment Manufacturer) page yield for the Q5950A. Our remanufactured HP 643A contains up to 85% new parts including wiper blades, OPC drums, an electronic smart chip for accurate toner level readout and other internal components. While most competitors simply refill the toner cartridge and hope the drum and other key components last, we fully disassemble the toner cartridge and rebuild it to ensure the highest quality prints. High quality LD remanufactured Q5950A toner cartridges are an economical and sensible alternative to expensive OEM Q5950A (HP 643A) Hewlett Packard laser toner cartridges and supplies. The use of LD remanufactured replacement laser toner cartridges and supplies does not void your printers warranty. LD remanufactured laser cartridges are not remanufactured by HP.LD Products offers a two year 100% Quality Satisfaction Guarantee on our LD remanufactured Q5950A black laser toner cartridges. For use in the following printers: Color LaserJet 4700dn, Color LaserJet 4700, Color LaserJet 4700ph+, Color LaserJet 4700dtn, Color LaserJet 4700n. We are the exclusive reseller of LD Products brand of high quality printing supplies on Newegg.