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Smart chip for HP 2550 replacement (HP 2550 chip). The smart chip allows your refilled HP 2550 toner cartridges to have the same functions as the original HP 2550 cartridge - including supplies status information, toner low out indicator, and information regarding pages printed remaining. The best and 100% successful way to refill the HP 2550 Laserjet printer is to replace the smart chip! This HP 2550 smart chip replacement is easy to install and resets your cartridges to "like new" specifications. New low price on the HP 2550 chip replacement