To determine which HP printer ink cartridges you need, first check your printer model. The compatible cartridge numbers are usually listed in your printer's manual or on a label inside the ink cartridge compartment. You can also find this information on the HP website by entering your printer model in their support section. Additionally, many HP printers display the required cartridge... https://medium.com/@suhani2045/how-do-i-access-ink-cartridges-on-my-hp-printer-hp-printer-ink-cartridges-1d43e2e6cb77