I've ordered a lot from China directly and have been able to collect good to very good experiences. Comes but a lot of the products available on the German market also from China.
But this part is simply scrap. Per iperf I 4.55 Mbit / s measured, which is totally unacceptable. A similar adapter, eg DELOCK 61147 creates at least 55 Mbit / s.
So off to the bin, because with the price of the trip to the post is already too much.