This product is junk. My Canon Pixma MP500 does not recognize it. This seller was no help. They were quick to advise me that I bought the wrong product. They advised me that there was a place on the web page to verify whether or not the cartridges would work with my Cannon printer. I found no such thing. Their representatives don't understand that the word compatible means "Will work with." They think it means not the OEM product. I was advised that they would not take the product back because I had opened it. I guess there is some other way to find out that a product is defective without opening the packaging, but I haven't figured it out yet. Don't get ripped off with this cheap incompatible junk, and horrible customer service. Save yourself the money and trouble and by the OEM product.