Chromecast 2 (2015) doesn't work on 5GHz : r/Chromecast
Chromecast Ultra delivers 4K and HDR content, but is that enough? [Updated] | Ars Technica
Google's updated Chromecast with Bluetooth also has better 5GHz Wi-Fi
Best Buy: Google Chromecast Ultra 4K Streaming Media Player Black NC2-6A5-D
Buy WiFi Wireless Display Dongle TV Stick for google chromecast ultra 4K TV Stick Media Video Streamer HD For cromecast 3 at affordable prices — free shipping, real reviews with photos — Joom