This permanent chip is for HP 940 and 940XL magenta cartridges. It can be installed on any refillable, compatible, or original cartridge. It is designed specifically with refilling in mind.
When refilling HP 940/940XL cartridges or using our HP 940/940XL refillable cartridge system, you have two options for chips: re-using the original chips or installing permanent chips
Note that with both options it will not be possible for the printer to display accurate ink levels. However, with our refillable cartridge system, this is not a problem because the cartridges are transparent so it easy to see how much ink is left inside.
This chip has a peel-off adhesive backing making it easy to install: just position it on the cartridge and press firmly to stick it into place.
This chip is guaranteed against all defects as are all our products.
Cartridge numbers: C4904AN, C4908AN