Google Stadia Pro launches on November 19 for those who pre-purchased the Founder's Edition. But one element of that package won't be working quite as some may have assumed, at least not immediately.
Users on the Google Stadia subreddit picked up on some fine print from a Stadia trailer stating that the Google Stadia controllers will only be wireless with a Chromecast Ultra. The controllers will require attachment via USB-C cable on all other platforms at launch.

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