In this post we would be discussing how to enable inside a machine built on VirtualBox. By default the USB functionality will not work.

 Steps to enable USB
1)Download the Extension Pack from virtualbox link given below.  
Link:https://www.virtualbox.org/wiki/Downloads

2) Install VirtualBox Extension
    a) Open Virtual Box
    b) Go to File>Preferences
    

   c) A new window will open and we need to select extension from left tab.
     

  d) Click on "+" sign and browse/select the extension pack which was downloaded.

   e) Click on install and accept license agreement. It will prompt for sudo password. Once done          
       installation would be  done.



  f) User running VirtualBox must belong to the vboxuser group.

    

  g) Now Restart you system and start virtual machine and mount USB device from the list.

      We can now easily use the USB device as per need.