T9UH works with good speeds but quickly the connection will drop to 1 bar and then disconnect.

This happens constantly with less than a few minutes of being connected.

Sometimes upon disconnection I am able to still see my network, and it will attempt to connect. Often after disconnecting I cannot see any WiFi networks at all. I have also seen it connected to my network with full bars but show the message "connected no internet".

It is not a router issue as WiFi is working on other devices. I don't think it is an issue with my PC, as I have anther WiFi adapter that works without this issue.

I have tried uninstalling and reinstalling. I have also found the T9UH in Device Manager and updated drivers there, which makes no difference.

Is it a defective unit or is there something else I can do?