USB Not Working on Virtualbox (on Linux host)

When using Virtualbox, generally we have usb problem. It doesn't work at the begining. The reason of that situation is the users of virtualbox operating systems doesn't know the host user. (in this case host is any Linux distribution)

To deal with this problem we need to add host  user to the 'vboxusers'(virtualbox users g.) group. Proceed the following steps:

1. Open a terminal
2. Enter the following code.

sudo usermod -a -G vboxusers username

where username is the user you want to add.

3. After you do that all you need to do is open Virtualbox and select Devices > USB > "Whatever usb device you want to add"