Review on 🖨️ Smart Ink Replacement Ink Cartridge for HP 902 XL 902XL (4 Pack) Advanced Chip Technology | Compatible with Officejet 6951 6954 6956 6958 6950 Pro 6968 6974 6975 6960 (Black L & C/M/Y) by Bradley Mutha

After 5 hours of fumbling, I finally got these cartridges to work. The first ten times my HP printer refused to recognize cartridges. The printer said it was out of ink. So initially I just swapped out the yellow and magenta and it didn't work, and then I swapped out all 4 cartridges and they still didn't work. And finally I took out all the cartridges and turned off the printer for half an hour and then put the cartridges back in and finally it worked. It was a big problem, but my printer eventually started printing with all colors.