#3 – Enable 802.11n Mode On Your WiFi Adapter If it does, then proceed to the next step to solve the 5GHz WiFi not showing up problem. There, you can see if your router supports 5GHz bandwidth or 2.4GHz bandwidth.
Research and find out resources with the description of the router model you are using. If you can’t find their website, take help of Google. Now go to the manufacturer’s website of the router and look for the product with exactly the same model name. It is usually mentioned below the WiFi router device. If you can’t find the info on the box or can’t find box itself, go look for your router manufacturer name and model number. It would have the information if your router supports 5GHz. But before you go ask Google for this info, go find the box in which your router came. To check if your router supports 6 GHz bandwidth or 5G, you will have to do some internet research. #2 – Check If Your Router Supports 5GHz Bandwidth