How to disable USB devices in win7 computer?

When I was working in the office before, many people liked to take things to me to print. At the beginning, I was embarrassed to refuse because of my face, but then this kind of thing became a habit, which sometimes caused My own work can not be completed on time, so I banned the use of USB devices in the win7 system, sometimes, we also need to prohibit USB devices to complete some work in the operation of the computer, then how Can you disable the USB device? Below, Xiaobian will give you a demonstration!
1. First, we need to open the computer's Active Directory user and computer, press win+r to open the running window, then enter dsa.msc and Click Enter to open it.
2. Next, let's select the USB OU that needs to be banned. Right click and select Group Policy. Then we create a GPO for USB and click Edit to open the Group Policy Editor window.
3. In the left menu of the Group Policy Editor window, let's expand "Computer Configuration" - "Windows Settings" - "Security Settings" - "File System", then right click and select Add File. Enter %systemroot%infusbstor.inf in the file bar and click OK.
4. After that, we need to enter the database security settings to delete all user information, and add everyone, in the permissions will be "read and execute", "list folder contents", "read" several items Check the box to cancel it, then add Deny Full Control and click Apply to perform the action.
5. Finally, in the window of adding objects, the default current settings can be completed.