I am not an expert in USB drives, but found this drive to be sufficiently fast and a good price considering the spec level. Another reviewer commented that it wasn't as fast as advertised but I'm not too sure about that. It came in FAT32 format which was useful for me because of what I was using it for. Perhaps people looking to store over 4gb files should be aware they may have to do some simple formatting before using this drive. I'm no expert so I could be wrong about that. Overall, would recommend.