You can use a generic USB Type-C hub/dongle to get an Ethernet connection on you CCWGTV (i.e. you don't need to get the official plug from the Google Store) : r/Stadia
USB C Hub Adapter Aluminum 8-in-1 QacQoc GN30E Type C hub with 4K HDMI (30Hz), USB-C Charging Port,Ethernet,SD/Micro Card Reader,and 3 USB 3.0 Ports for 2016/2017 MacBook Pro,2015/2016 MacBook, Chromebook and more (
USB C Hub Adapter Aluminum 8-in-1 QacQoc GN30E Type C hub with 4K HDMI (30Hz), USB-C Charging Port,Ethernet,SD/Micro Card Reader,and 3 USB 3.0 Ports for 2016/2017 MacBook Pro,2015/2016 MacBook, Chromebook and more (
Hub USB-C de QacQoc: este hub es versátil, veloz y con un diseño propio de
Review: QacQoc USB-C Hub – More Ports For Your MacBook - MacTrast
QacQoc GN30H Aluminum Multi-Port USB C HUB Adapter with 4K… | Flickr
QacQoc GN30H USB-C Hub Review - YouTube
USB C Hub Adapter Aluminum 8-in-1 QacQoc GN30E Type C hub with 4K HDMI (30Hz), USB-C Charging Port,Ethernet,SD/Micro Card Reader,and 3 USB 3.0 Ports for 2016/2017 MacBook Pro,2015/2016 MacBook, Chromebook and more (
QacQoc GN30C USB C Multiport Adapter REVIEW - MacSources
QacQoc USB-C HUB Adapter 8-in-1 GN30H Aluminum MultiPort TYPE C HUB Unboxing - YouTube
This USB-C Hub Does Everything: QacQoc GN30H Review