Bought to use with a Fire TV Stick 4K and all it took was to physically (or in between) plug it in and the Fire TV Stick 4K started doing it to use instead of WiFi (after downloading off - for 5V power dissipation). When RJ45 is disconnected, it will automatically return to WiFi. Haven't noticed any problems yet. I haven't measured the Ethernet throughput and haven't tried the USB hub yet.
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