e_c_hammer 5 When I ordered my HP InkJet Pro 8020 printer, this item was listed as "Frequently bought together" for some reason. This is inaccurate.Assuming that Amazon knows how to pair printers and ink, I got them both, knowing that the ink that came with the printer would not last long.After a few months, the black ink ran out, so I inserted a new ink cartridge. It snapped into place perfectly but it was not recognized. After some research, I discovered that this ink is not compatible with the HP InkJet Pro 8020 printer. Now the window for returning this useless item has already passed.My only option is to give it to somebody who can use it because I don't want to throw it away after wasting ¥4,355 to buy it.I've lost a lot of confidence in Amazon after this purchase. Don't believe their "Frequently bought together" suggestions. They can be inaccurate and by the time you find out, it's too late.