How does the win7 system make the computer system prohibit the use of the u disk

Win7 system how to make the computer system prohibit the use of the u disk for the average user, prohibiting the use of the u disk is not a meaningful thing, but for some computers have important information and confidential documents For users, it is very necessary. Preventing the computer from using the u disk can prevent important information on the computer from being copied. Let's take a look at how the Apple is working.
1. Use the combination shortcut "win+r" to open the run, enter "gpedit.msc", press Enter to confirm
2. From the left column of the local Group Policy Editor, enter "Computer Configuration" - " Management Module — “System” — “Device Installation” — “Device Installation Restrictions”, double-click the “Do not install removable devices” option in the right column.
3. Select the “Enabled” option in the upper left corner and click “OK” The button saves and exits.
Through the above settings, the system is set to prohibit the use of the u disk, if you need to restore, just re-select the "not configured" option in the third step and then save and exit.