It refused to work with Mac OS Catalina 102022.7, with installed drivers, the connected computer was not detected, the LED did not light up. Downgraded the system to Mojave 102022.6 (not because of the adapter), same thing. After some time of various connections, connections to other devices, other cables and to different ethernet inputs at home, in an incredible way, everything worked as it should. It is completely incomprehensible what the matter is - perhaps it would have worked on Catalina. As a result, now everything works as stated, no complaints. I can’t put 5 stars in any way because of a completely incomprehensible refusal to work at first and the lack of troubleshooting by the manufacturer, but now there are no complaints, for 1000 I bought exactly what I needed.