Perfect and really Plug & Play on Mac
My old 22" iMac from 2011 had its network card down, which is essential for my use.
This box saved my old iMac's life, you just have to connect it to a free USB socket on your computer, put an RJ 45 cable to your Internet Box, and that's it, the connection is immediate, without having to do any configuration on my IMAC.
I would say perfect, moreover the product seems to be of good quality! I preferred to buy an Apple product, to be sure of the compatibility with my MAC. Other boxes probably work, but I preferred to avoid bad surprises, even if it means spending a bit more money ;)