The Chromecast is the device developed by Google, allowing you to connect your TV to the internet. The Chromecast is of the size of a USB key and plugs in directly to the HDMI port of your TV. From there you can stream audio, video or pictures from any device connected to the same Wi-Fi network (smartphone, tablet, desktop computer or laptop).
How to install and configure the Chromecast:
The procedure is as follows:
Connect the Chromecast to the HDMI port of TV.
You also need to connect it to a USB port to power it up. If you don't have any free USB port available, use the provided AC adapter.