One US retailer has started selling the unannounced $50 Chromecast with Google TV - PhoneArena
The fastest Chromecast yet, with 4K and HDR support
Amazon.com: HDMI Converter for Google Chromecast: Use Chromecast with Older TVs That Have Composite (red/White/Yellow) Inputs. Includes Converter, Power Adapter Cable and Composite Video Cable. : Electronics
File:Chromecast Audio.jpg - Wikipedia
Google Chromecast Audio Review | AVS Forum
Chromecast overhaul adds a remote, Google TV software for $50 - CNET
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