Maximum temperature of an hdmi tv stick? Roku NowTV, AmazonFireTV, Roku etc Thanks for the reply. In comparison, I have found my laptop's CPU maximum or 'throttle temperature' to be 90C, and for hdmi adapters available online (and I suspect also any port on a tv), their... By Ace 4 replies 644 views AC 27 Apr 2019 11:39amAce