The hardware version is TE7T2U. I have manually set the router's channel to 48 and now 5Ghz connection can be discovered. But I believe that channel selection should be auto for band 5 rather than...

I have a T2U AC600 Wireless Dual Band USB Adapter but I am unable to discover 5GHz connections though they are discoverable by my mobile phone and another laptop with dual-band card. I have installed...