To determine which HP printer ink cartridges you need, start by checking your printer’s model number, typically located on the front or back of the device. Once you have the model, visit the HP website or consult the printer's manual to find the specific cartridge numbers compatible with your printer. Alternatively, you can search online or at local retailers by entering your printer’... https://medium.com/@stark07274/how-do-i-know-which-ink-cartridge-to-buy-for-an-hp-printer-hp-printer-ink-cartridges-cb7e4ca4d8d6