The product has a good finish (the plastic is soft and non-slip). With Galaxy S3 Jelly Bean 4.3.1, it works first time in plug and play. I tried transferring from SD card and micro SD problem. The flow is adequate though not super fast (8MB / s). With a USB pc'est as nickel.
There is a small USB power cable supplied with (probably to an external hard drive). I have not tested.