If you're a Google Fiber subscriber, you no longer need to use a Chromecast to stream content from your mobile device to your tv. Google announced today that it has integrated Cast technology (what makes your Chromecast work) directly into their Fiber set-top boxes. It cuts out the Chromecast middle man, is what I'm saying. You can just chuck that dongle since it's now superfluous. The casting process is exactly the same, it just runs straight through the set-top box now.