I have an asus router with dualband. Tried to connect to 5Ghz band with my laptop, lenovo z50 but there was no 5Ghz band available.
So I bought a USB dongle with 802.11ac, and I can see lists of 5Ghz wifis of my neighbors, but still cannot see my own 5Ghz wifi router. Only 2.4Ghz.
I am connecting to the 5Ghz band with my phone I know it's working, the 5Ghz is not hidden network. It is broadcasting SSID. I've also tried to add manually so It connects to my specific SSID and AES key. But still not working.
My usb wifi has 2.4Ghz, 2.4+5Ghz and 5Ghz channel modes. My onboard laptop wifi Realtek RTL8723BE Wireless LAN 802.11n has bandwidth value 20_40Mhz and 20Mhz only modes. Currently on 20_40Mhz mode. Wireless mode Auto with IEEE 802.11b and IEEE 802.11b/g. Currently on 802.11b.
Router is Asus RT-AC68U.