This is a test of commonsense. Complete the next sentence:

How to cast from a chrome browser
Locate an empty hdmi port on your tv.
Look behind your tv and find the hdmi ports at the back. Your tv may have multiple hdmi ports, just select one.
Connect the chromecast dongle to a power source. Plug one end of the usb power cable into your chromecast and the other end of the cable into the power supply and then into a nearby power outlet.