The processing of the card reader is very good and high quality. It consists partly of aluminum and is very stable.
You can insert a microSD and a normal SD card and high concurrency both respectively. For each card by plugging its own drive appears,
The read speed is outstanding: My UHS I card U3 (sand Disk Extreme 64GB), thus achieved extremely high read and write rates (see picture). Here are the instructions of the microSD card exceeded (60 MB / sec. Read and 40MB / sec. Write).
The handling is advised but unfortunately a bit unfortunate. Lying next to the USB port to other ports or jacks, as in my case, for example, the charging socket, they are obscured by the extremely wide range of readers and can no longer be used. In addition, he was pretty hot for me when copying multiple, larger files. But I regret to deduct a star.
If you can live with the restriction by the general construction, gets to the Kingston MobileLite G4 one of the fastest card readers on the market.