**: As an unreferenced footnote, fixed devices such as Chromecast should always have a hardwired option. Every other*** fixed device on my network is hard-wired; why should the Chromecast not be? I've never carried the Chromecast between TVs, although it's easy enough to do so.
We move ours all the time and don't have ethernet in most rooms of the house. I'd rather ethernet be optional to keep the footprint smaller.