https://prnt.sc/qyjtyx
I don't know if it helps but these are the protocols that my TV support for Ethernet i guess. All of them 802.11.
And most of the USB to Ethernet adapters i checked are 802.3 or 802.2. I found an adapter in my country which has the protocols of my TV named on it.
It's brand is chinese named but doesn't really bother me? Should i go for this one adapter?
IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
1000 Mbps