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Google is discontinuing the Chromecast line
(www.theverge.com)
This is a most excellent place for technology news and articles.
I take my raspberry pi 400 and a mouse with me ($70). I don't like to travel with expensive things. Once connected to a hotel tv, i have a full pc. I watch movies in 720p to have more fps. In case I have something important to do but no TV, I vnc to my phone.