For me I have Sony A80J and am using a
Cable Matters # 202013 adapter in USB port 3, it is a 3.1 port the others are 2.0
The point I was making is that the ethernet to USB solution is being used elsewhere but it's a hit and miss for sure. Still a good one to remember if you need more speed or reliability for some reason. Example is an Intel NUC I use that has onboard Gig E if I needed more speed I'm sure I could use a dongle on the USB. I'm sure other routers, TV's, etc. will work if you find the right combo but many more, the majority I'd guess, won't work at all.