I have not managed to find if it was of the adapter itself (because it was not compatible with my operating system) or if it was the network where I wanted to hook me which was secure.
I as I now read in a comment lenovo thinkpad yoga 2 (pro) ... does it come from there?
I then found a solution: get the wifi key to connect to wifi on the network so I do not need this adapter.
The seller is perfect as against the shipment is quick and neat for that reason it deserves 4 stars