@Kaiyuan Is it the speed you get from the modem directly? 948.21/714.08Mbps? With main Deco connected to the modem only, please connect the computer to the main Deco by wired cable and run the speed...

@celos What is the model number of the switch? With modem--Main Deco--computer connected, can you access internet with your computer? And click here to check its IP and gateway. If the internet works...

@RoRoS The Deco network can build up mesh network with Deco series, while for other wireless router, they still can work together, and you can change the wifi name to the same one; but they cannot...

@Bymc85 Click here to get more information. Nice day.

You are very welcome; thanks for your suggestion and support as well. Any further problem, please let us know. Nice day.

My pleasure, glad to help you. Best regards.