The cartridge looked exactly the same but the senor strip was different and it would not work on my printer.
Response from StaplesBy May 19, 2021
Dear Jo We truly regret hearing that you're not completely satisfied with your Tru Red™ HP 971XL replacement cartridge. Please reach out to our Tru Red support team at 1-877-228-3128 so that we can assist you in resolving any issue you are experiencing with the product.
At first it worked just fine on our X576dw MFP. Pages were crisp and looked good. Then the pages began having faint areas or portions that didn't print at all. Kept getting progressively worse. I bought a genuine HP and the problem totally went away. Only used about 1/3 of the TruRed before I had to change it out.