Installing under OS X ran contrary to my fears (one should not read manual ...) completely without problems, LAN cable from the router to the adapter, the adapter into the socket, next adapter anywhere else in the socket, PC with this adapter connect, finished.
Without driver orgies or whatever, I'm still excited and had our home network even expanded with a second set adapter and a wireless module, also from TP-Link, at no time any complex installation needed.
If I could award 6 stars, I would do it immediately ....
An absolute buy recommendation