I'm very satisfied with the adapter. I got it to me for my Samsung Galaxy Note 10.1 is fetched and so have tested USB sticks and SD cards + Micro SD. USB sticks work fine if the file system FAT 32 or have I recommend rather exFAT because as larger data copying can. With exFAT I could my Lexar 64GB USB Stick without any problems run not with FAT 32.