The Chromecast is a gadget you can handle with bare hands, which is used for streaming Netflix, YouTube, and other content from mobile devices to your TV, but it requires a strong Wi-Fi connection to deliver streams that don’t buffer.
Not everybody has a super-fast Wi-Fi network, though, and for those people, Google has an Ethernet adapter for Chromecast. The adapter is like the existing Chromecast power cord, but the plug end now comprises a small Ethernet port.
Connect an Ethernet cable that’s also connected to your modem to that port, plug the USB end of the adapter into the Chromecast, connect the Chromecast to the HDMI port on your TV, and you’re good to go. It’s $15 in the Google Play store.
Also read: How to Set Up the Google Home Mini