@Kevin_Z Thank you for your reply! Because of its unstable performance, I have returned the product to the seller and switched to another brand.

I found more errors when tried to figure out the reason of the slow speed. Even though my iPhone is connect to the Wifi, the "Test again" button is greyed out. I have no way to do another speed test...

Hello, To upgrade my Wifi network at home, I bought 3 set of Deco M9 last week. After the setup, I had significant upload/download speed increase in my home network which is 500M/500 network. The...