Mark Wilson writes: Google's Chromecast has gained quite a following of people looking for a cheap, simple way to stream content to their TVs. Part of the device's appeal is its easy of use and extensibility through the use of apps, but it is reliant on a steady Wi-Fi signal. If this represents a problem in your home, there's now a solution. The new Ethernet Adapter for Chromecast does very much what you would expect — it adds a wired Ethernet port to Google's streaming dongle. This is great news for anyone with a flaky Wi-Fi signal, or those looking to use Chromecast beyond their router's normal range.