Remanufactured HP C4933A (HP 81) yellow ink cartridge. This original Hewlett Packard cartridge has been through one cycle of service and remanufactured using both OEM and non-OEM parts. It features a 'smart chip' that optimizes print quality and enhances reliability while monitoring ink levels. This cartridge allows for efficient and economical replacement of individual ink cartridges. Backed by our 100% Quality Satisfaction Guarantee.