Yes, you need to use the power supply that comes with Chromecast Ultra | What to Watch
Anyone else have issues with Season 3? Season1/2 work fine but 3 is only getting and HDR channel. i have turned off/on HDR no difference. Google chromecast tv (dongle not built in) :
Shadow.Tech Review | PCMag
Google Chromecast with Google TV (HD) - Snow | Harvey Norman New Zealand