Smart Ink - Your smart cartridge choice!Your printer is something you use every day, making printer ink one of the things you have to buy regularly. Unfortunately, replacing printer ink can be expensive, especially if you think your ink needs to come from the same manufacturer as your printer.With its vibrant colors and professional quality, the Compatible Ink Cartridges produced by Smart Ink are the ticket to replacing ink quickly and more affordably. These cartridges are compatible with many HP printers. You can use these cartridges for HP OfficeJet 6000 E609a E609b E609c E609n 6500 E709 E709c E709e E709f E709n E709q E709s 6500A E710a E710e E710n E710s 7000 E809a 7500 7500A E910a E910c printers. These Compatible 920 XL 920XL Ink Cartridges can print out 700 pages per color cartridges and 1200 pages per Black (at 5% page coverage). User Manual (added to each set)● If your printer displays a "Non-Genuine" message, press "Proceed"/"Continue"/"Accept" or "OK" to continue.● If you receive the error "Ink Cartridge not recognized" or "Missing or damaged ink," remove the indicated cartridge. Then use a dry, lint-free cloth to gently wipe the copper-colored contacts on the cartridge and carriage to remove any buildup. Replace the cartridge and make sure that it clicks securely into the corresponding slot.● If you get "Ink out/Empty/Low Ink" error, remove and reinstall indicated cartridge until it firmly seats into the slot. If all the cartridges are correctly installed, press "OK" or "Continue" to clear the message, and resume printing.