I bought these cartridges in a short (nickname: adriana) on the amazon website and they do not work: unpacking so the cartridges normally fit but the light continues to flash indicating no cartridge: it is stated that there is an error and therefore can not operate the printer with these cartridges which are however obviously indicated for my printer deskjet H470. I took the same cartridge before and it worked well. The error is the same with the 2 pack of cartridges. So the question is: is it a problem with the cartridge or is it an infringement on the site amazon sold as a branded product ??? Obviously, I had bought the cartridges in advance not to find myself without ink and so I have not used immediately upon arrival home. They remained quietly in their closed box, in their blister. When I contacted the seller, I was informed that she would not do anything because it was too long that I had bought ... Yep, it must buy cartridges on the net is that when really run out of ink! And obviously I have no use ... For once, here I am disappointed with a purchase on amazon! Conclusion: beware of cartridges purchases from vendors other than amazon ...