I have one install in my wife's Samsung Galaxy Tab A and My Acer Spin 713 Chromebook. Really fast transfer of my files, Music and 2K, videos to my Spin 713 and Photo, Music files and full HD videos on Galaxy Tab A. Only problem and I know that any USB, SD, Micro SD usually loses a little bit of their actual space, so mine is a 256GB and is missing 17GB... it's a lot, ended been 239Gb Actual. Not an engineer but that is way too much GB's stolen from memory when it's advertised as a 256GB... should have been a 273Gb to compensate for the stolen advertised 256GB. anyway, they'll look for any excuse just to run away from the problem. If it's 256advertised; 256 is what you should be getting period.