Review on 15-Pack RETCH Compatible Ink Cartridge Replacement for HP 564XL 564 XL, for DeskJet 3520 3522, Officejet 4620, Photosmart 5520 6510 6515 6520 - Includes 3 Black, 3 Photo Black, 3 Cyan, 3 Magenta, and 3 Yellow Cartridges by Pat Haberman

Installed correctly?Yes But the HP Glitch does not accept these cartridges. Yes I went into the settings and yes I used the default without setting the ink info. Did it get through the press, yes! However, it just doesn't print dark, which is a little sad. I will not send them back because it is too problematic. I don't think this is not the seller's fault. However, I have to read the reviews that a lot of people had this problem. For this reason I would never buy HP again.