Device permanently lost the connection or crashed on several memory cards 4-32GB, if it was connected to the USB3.0 port. With USB 2.0, he ran, but that's not the point with a USB3.0 card reader. PC is a regular Ivy Bridge machines, in which everything else is running without problems to the USB ports. Habs tried also to other computers.
Latest firmware has been deployed.
The Transcend support, unfortunately, could not help.
Schade Transcend. Your memory cards are good!
Have returned it and got this very good and cheap card reader, which is going great