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If it's the old one, it only works only on the 2.4 G. Time to upgrade. https://support.google.com/chromecast/answer/3046409?hl=en
Sorry, there was a problem. Please try again later.The "old" or 1st generation Chrome cast does not support the 5ghz spectrum. New ones do.
Sorry, there was a problem. Please try again later.The Chromecast Ultra support 5GHz wireless networks.
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