Cheap alternative to TB-Adapter from Apple

Since the MacBooks are getting thinner and WLAN sometimes just is not enough to move large amounts of data on the network, you need an Ethernet adapter.
Anker offers here a nice handy adapter that does his job. He was recognized directly under Yosemite, nothing had to be configured. The connection is established immediately and stable. The LEDs (are only times not seen) show the activity or the existing connection.
The price is absolutely justified for the adapter. It comes in a beautiful, easy-open packaging made of paper / cardboard, which unfortunately is not so self-evident. The processing of the adapter is also ok - not at the highest level, but it serves the purpose. The cable has a good length - not too long for small tables in hotels, not too short, if you have also occupied other slots and the adapter has to find his way.
Only at speed in a Gigabit network he does not such a good image. I have a test basis postponed various data to our server and receive an average speed of about 30-45 MB / s (depending on the size of files). This is in my case just over WLAN level.
The TB adapter Apple provides this with about 80-120 MB / s (depending on file size) - but also costs twice as much.
If you want to only mobile will have the opportunity to get wired to the Internet, this adapter is quite an affordable alternative to the original. It also works great on USB hub, so has not necessarily a complete USB port.
When it comes to performance, but you can not get to the original.