This Is A Must Have For Any Google Stadia Chromecast With Google TV Player - The Nerf Report
Ethernet Adapter for Chromecast: Quick Start Guide - Chromecast Help
Chromecast with Google TV (HD) - Streaming Device
Google Chromecast with Google TV - Streaming Entertainment in 4K HDR - Snow GA01919-US - The Home Depot
How to enable developer options in Chromecast with Google TV? - All About Chromecast
Ethernet Adapter for Chromecast with Google TV Vietnam
Google Chromecast with Google TV review: The best streaming dongle
The new Chromecast with Google TV will get an Ethernet adapter, but it will cost $20
The Ethernet Adapter for the new Chromecast with Google TV will cost $15/£15 (links in comments) : r/Chromecast