Usb driver is the most needed thing to connect any mobile with a computer for exchanging of files from computer to mobile or mobile to your pc. If you wish to connect your mobile with computer and use the internet on your pc you will need to install its USB parent driver first. Otherwise, you can't connect your mobile with your pc. Without USB driver your computer will not detect your phone.
The latest USB driver of Nokia x has been released and simple downloading link is available for download. You can download the latest USB driver from the provided link which is given below of the post.