Why cannot the adapter detect the 5G Wi-Fi of my router?
Case1: Can not see any 5G Wi-Fi.
The old wireless adapter that doesn't support 5G installed on your computer may affect the 5G Wi-Fi broadcasting of the Mercusys wireless adapter, so if you are unable to see the 5G Wi-Fi, please follow the steps below to disable the old wireless adapter:
To disable the other adapters, please click the WIN on the keyboard, then input the network. Open the View Network Connection. Then check the Wi-Fi list again whether you can see the 5G Wi-Fi or not. If not, please go to case2.
Case 2:Cannot see the 5G Wi-Fi of your router
If you have an old wireless adapter, please disable it first to check if it's working.
If the same story, please do the following troubleshooting:
Open the management page of your main router, go to the wireless settings and change the channel of 5G Wi-Fi to 36. Then check the Wi-Fi list again. Here we take the Mercusys router as an example
It might be affected by DFS, for the details, please refer to:
https://wifinigel.blogspot.com/2018/05/the-5ghz-problem-for-wi-fi-networks-dfs.html