Review on 💾 TCELL Superior 128GB Micro SD Card with Adapter - MicroSDXC A1 USH-I U3 V30 100MB/s- Full HD & 4K UHD Memory Card for Phone, Android Mobile Device by Brandon Grzankowski

Memory cards are useful. Here I happened to test the 128GB Class 3 and it worked as advertised. Actually, I had to get a card reader that supports USB 3 first. And I also noticed that some of my USB 3 ports are not version 3. Grrr. In any case, tests on various Win10 PCs gave almost claimed read and write speeds (100/85). See diagrams. USB 2 was of course much slower. As with most storage devices, the questionable part is how long they will last. Will you check back in a few years? Meanwhile, $20 is in the mid-range for a 128GB Class 3 SD. I don't see anything wrong here.