How to disable u disk under Win7 system?

I believe everyone knows that there are many sources of virus transmission. Basically, many of them are related to U disk. In order to protect the security of the computer, it is necessary to protect the u disk from viruses or to prohibit the use of the u disk. How to disable it? u disk? u disk is forbidden to use, in addition to the u disk is written protection method can also be used to modify the form of the registry to achieve the purpose of prohibiting the use of u disk, the following small series for everyone to introduce the specific operation method.

u disk prohibit using the operating method:

1, run Ankuaijiejian win + r open window, the input window regedit press ENTER operation, as shown:

2, in open registry editor, expand HKEY_LOCAL_MACHINE \\ SYSTEM \\ CurrentControlSet \\ services \\ USBSTOR, found on the right side and double-start key, as shown in FIG:

3, the edit DWORD (32-bit) values ​​in the window, the numerical data to 4, click OK, as shown in FIG:

the above is to introduce small series Under the Win7 system, the operation method of the u disk is forbidden. I don't know how to disable the user of the USB disk in the Win7 system. Try the above steps to try it out.