We no longer offer cartridges that are compatible with your HP Color LaserJet 8550dn printer. Since this printer is out of production, cartridges are no longer being manufactured for it. Rather than searching the web for what remains of these cartridges, consider looking at printers available for purchase directly through our website. The Pantum printer line offers an amazing value as it's the top performing printer in its budget class. If you're looking for a printer that will provide you with the convenience and versatility of an HP laser printer, check out our recertified HP printers that have been professionally remanufactured and modified to operate like new for a price that won't break your budget. You can find these by going to our Printer Shop page.