Installing Ink Cartridges | HP OfficeJet Pro 7720/7730/7740 Wide Format AIO Printer | HP Support - YouTube
Amazon.com: HP 952XL Yellow High-yield Ink Cartridge | Works with HP OfficeJet 8702, HP OfficeJet Pro 7720, 7740, 8210, 8710, 8720, 8730, 8740 Series | Eligible for Instant Ink | L0S67AN : Office Products