Several Methods for locking the USB interface (very practical)

Many companies do not allow employees to copy important files from the company using USB interfaces. However, it is difficult to easily and thoroughly lock the USB interface. Where is the problem? It's hard to say "both convenient and thorough! Currently, the following methods can be found on the Internet:
Method 1: Modify the Group Policy or registry
By modifying the Group Policy or registry, you can disable access to USB flash drives with certain drive letters. However, employees who know the node group policy and registry knowledge can easily remove the USB flash drive restrictions. So it is actually useless. The boss will not adopt this method.
Method 2: Modify BIOS settings and disable USB devices.
In the BIOS, set the USB device to disable. Then, set a logon password for the BIOS so that employees cannot use the USB flash drive. This is a fierce move and the boss is satisfied. However, USB mouse and USB keyboard cannot be used in this way, which is unacceptable. Therefore, this trick is too hard and no boss can use it.
Method 3: remove the USB driver that comes with Windows, so that the USB flash drive cannot be inserted into the drive, and the driver cannot be used.
Specific Operation: Delete the device package in the i386 folder of the Window system, or disable the usb bus controller. The weakness of this method is obvious: First, you cannot use a USB mouse or a USB keyboard; second, you can reinstall the driver or enable the usb bus controller. In short, this defense method is also the ears of the deaf!
Solution 4: Microsoft officially proposed a solution suitable for expert operations. For details, refer to the Microsoft webpage: http://support.microsoft.com/kb/823732/zh-cn. However, this method has no effect, because the experts can also do the same and cancel all restrictions on the USB flash drive. Therefore, this is only a way to prevent cainiao from being a master.
The above four methods cover all the public methods for locking the USB storage interface, but none of them are reassuring. Almost all of the tools and software available currently use the above methods.