In my case, the Micro USB hub not working. I have several Samsung products tested in connection with this USB Hub - in very rare cases I got contact for a very short time. Namely inaccurate as long as I use the plug with pressure in the respective device pressed. Thereupon I had times others, especially original Samsung cables, Micro USB connector and noticed that they are short by 2mm. Unlike those from the USB hub. The "Less" of course does not refer to the entire connector, but only to the front area matallenen. What else would not be so bad, but unfortunately the contacts are also to 2mm deep. So the contact with the smartphone or Taplet is not established.
Since the value of goods is so low and the whole thing comes from China, I will refrain from returning. It simply is not worth it. I hope it will not consciously expected in such circumstances. On occasion I will make myself even with a fine file or grinding wheel to work and the "2mm too much" grind.
