Bests & Worsts Reviews from Amazon

I purchase this in order to record 4k on my Sony AX33 using the 100mbs for the highest quality 4k (vs 60mbs). I install the card and I set to 100mbs but, receive a message that I must install a U3 card. That is what I purchased. I did some research online and found a reference where some where having the same issue and others were not. I decided to go to a local store and I found the exact same PNY SD card. I purchased it and tried it at home. Well guess what? It worked! Not errors. I looked at both packages in great detail and only found a few differences. Note the pictures: The SD card on the right DOES work as a UHS-I U3 @ 100mbs the one on the left I purchased from amazon and is NOT recognized as a UHS-I U3. I have attached a video demonstrating the error I receive when trying to use one over the other.PNY Elite Performance 64 GB High Speed SDXC Class 10 UHS-I, U3 up to 95 MB/Sec Flash Card (P-SDX64U395-GE)