Problems due to disconnection when copying data files

The CF-reader makes a solid and sophisticated look. Unfortunately, he has during charging a series of pictures of cards SanDisk Extreme Pro 32 and 64GB partly multiple disconnection, ie the card reader logs from the computer and then immediately back on. This copying is interrupted and you have to manually restart.
OS Win 7 64-bit, current status Microsoft Updates. By contrast, the Lexar Dual Slot Card Reader work on the same PC in a long time without any problems. It is equipped with high performance cards in SD extremely fast, with corresponding high-performance CF cards but a little slower, but still faster than "normal" card reader.
Since the super fast workflow reader is not reliably used because of occurring when copying disconnections to the computer, I give only one star. Here Lexar should make improvements. The same error was already claimed by another user in his evaluation.