Great question — answering as the UphillTech team:
The easiest way is to upgrade the kernel to 4.4. It supports this adapter without adding backports. Otherwise you will have to re-install backports after each kernel upgrade. You can do it by running in terminal: sudo apt-get install linux-generic-lts-xenial Your Wi-Fi should work after a reboot.
Full answer by Pilot6: https://askubuntu.stackexchange.com/a/815502 (CC BY-SA 3.0).
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