When using Chromecast with Google TV with Gigabit LAN, communication is possible at over 200 Mbps

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Anker "Power Expand 8-in-1 USB-C PD 10Gbps Data Hub" (7990 yen) Prepared to expand the USB Type-C of MacBook Air.A case is also included, making it easy to carry around

When power is supplied by a USB Type-C PD and connected to Chromecast with Google TV that uses a wired LAN port, such a screen is displayed when the output of the AC adapter connected to the hub is insufficient like this. The AC adapter that does not start is the one that can output 5V 3A, this time Anker "Nano II 45W" is prepared Connect the AC adapter of 3A output and start successfully

Confirm that the wired LAN is connected in the settings

When I measured it with a gigabit wired LAN, I measured it at "Fast.com" at speeds exceeding 200 Mbps as well.This is close to 200Mbps but fast enough

By the way, the speed measurement result with Wi-Fi 5. It's over 100Mbps, so this is enough. Similarly, the measured value on Fast.com with Wi-Fi 5. Less than 100Mbps but enough for watching 4K video