Tested on Macbook pro retina 10.10.2 The first few days passed Ethernet 1 time 3 times by restarting it solved the problem, and after a week of using it no longer works. Only the USB part still works. Too bad. Externally the product is very well finished, and the cable is long enough to hide the adapter and the Ethernet plug behind something. Bought 30, a good price compared to the Apple adapter that could be sold cheaper 5 or 10 and 30 cm cable, not 3 cm LOL.