I was a bit hesitant to purchase this since the only two reviews were 5 star and 1 star. I did have a little difficulty installing the cartridge as there was an extra step that the HP ones didn't require and wasn't very clear in the picture instructions. Have been using the cartridge now for about 5 months and, other than the display blinking "Non HP supply in use" between it's normal displays, neither I, nor anyone in the family has yet noticed a difference in print quality from the HP toner.
These cartridges are so inferior to the real thing that I wouldn't use them if they were free. They come with missing parts, broken hinges, and leaking toner all over the place. They have ruined one of my printers to the point that I had to throw it out. If I could rate this product a "zero" I would.
PROS: they sure are cheap, but unfortunately in every sense of the word
Thank you for your review. And I am truly sorry to hear of your experience you have had with this product. For now, if you prefer, I can assist you in setting you up for a replacement on the item if you haven't done so already. We do warrant our non-electronics and cables with a lifetime warranty as well as a 1 year warranty for electronics. It will be of no additional cost to obtain a replacement, so please let me know if you want to continue. I would just require your order# to set it up. Alternatively, if you are truly unsatisfied of the item I can assist you in setting up a return. Thank you!