We offer LD remanufactured and original Hewlett Packard ink cartridges for your HP OfficeJet Pro K550dtwn printer. LD remanufactured replacement ink cartridges and supplies for the HP OfficeJet Pro K550dtwn are specially engineered to meet the highest standards of quality and reliability. Using our LD inkjet cartridges does not void your printer warranty. Our products come with a Two Year 100% Quality Satisfaction Guarantee. We also carry original HP ink cartridges which offer the reliability that you can expect from HP and are backed by the standard HP warranty.