How to prevent important files from being copied by the USB flash drive

Introduce the setup process.

1. Insert your U disk into the win7 system first, let the system use the U disk normally, then enter the “Control Panel” and double-click “Device Manager” to expand it. Portable device & rdquo;, you can see your U disk inside. 2. Click the right mouse button to select “Properties", click the “details" tab in the pop-up "Properties" window, then select “Hardware ID> in the Device"Properties" drop down box. The string below will appear in the value of "The value", this is your U disk hardware ID, copy it and save it (friendship, not all U disk and other devices can find this hardware ID). We also need to copy the "Universal Serial Bus Controller" in the "USB Mass Storage Device" hardware ID, expand the "Universal Serial Bus Controller" list in the "Device Manager" “USB Mass Storage Device”, click on the “Details” tab in the “Properties” window, and copy the hardware ID to save it. After finding the U disk hardware ID, it can be implemented through Group Policy. Press the shortcut key "Win+R" to open the "Run" dialog box, enter "lded;gpedit.msc" to bring up the Group Policy window, and then expand "Computer Configuration & Rarr; Management Template & Rarr; System & Rarr; Install → device installation limit & rdquo;, double-click on the right side "Do not install the device is not described by other policy settings", select "ld" in the pop-up window, "click", then click the "OK" button, set it can The ban policy does not describe USB devices.