OK, thank you. My WiFi works fine with the Raspberry OS though(also OSMC, picoreplayer, Volumio, etc).
Here is my adapter as cited in https://elinux.org/RPi_USB_Wi-Fi_Adapters
Here is my adapter as cited in https://elinux.org/RPi_USB_Wi-Fi_Adapters
Code:
Leoxsys
Leoxsys LEO-NANO150N USB Adapter,tested on Raspbmc,Auto recognized,Just use in-built network configuration settings. It works by default on Ubuntu Mate Release 15.04 (Kernel Linux 3.18.0-20-rpi2). Works great on OSMC. Works in ArchLinux.