The reason you were able to do it with the other adapter is likely because the configuration of that adapter allows you to configure both bands to the same frequency. You can't create a virtual network on the same band you are connected, to an existing network on given your current hardware. However if you are connected to your network using the 2.4GHz band, and you're using the adapter to create a virtual hotspot, that would explain the reason you can only create an 802.11n 5.0 GHz hotspot. If you still can't figure it out there are multiple third-party programs that will provide you that granularity configuration of your network. This configuration might be at the device level, which means you want to look at the configuration of the device in Device Manager.
Your adapter is dual-band which means you have to configure Windows so it knows which band you want to use (2.4GHz or 5.0GHz) for the virtual router. Only the devices supporting 5G WiFi can find the hotspot.
My laptop with Windows 10 can connect to 2.4G WiFi as well as 5G WiFi,īut when I turn on the hotspot in Windows 10 settings, it says that