Help & troubleshooting for network issues, including connecting your device to your home Wi-Fi network, connecting to public networks, troubleshooting wireless issues & ethernet connections, and optimizing streaming performance.
Re: No Ethernet port on ROKU...adapt to USB or HDMI?
There are some Roku TVs that have successfully used a USB Ethernet adapter, but I can't say what TV and what adapter worked. You might do a search of the Community here and see if you can find an older post. They aren't officially supported, but they have worked.
For Roku players (not a TV version), no Ethernet adapter is available. The Ultra has an Ethernet jack if you must have a wired connection, but you can't add one to devices without them.
Dan Roku Stick (3600), Ultra (4640), Ultra (4670), Ultra (4800), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.