Several common methods of shielding computer USB interface

How to control the computer USB interface?

USB is an external bus standard, which is used to standardize the connection and communication between computer and external devices. USB interface Plug and Play and hot-swappable features. USB interface can connect 127 kinds of peripherals, such as mouse and keyboard. It has become a necessary interface for today's computers and a large number of smart devices.

Next, let's take a look at several common ways to screen your computer's USB interface.

Method One: Modify BIOS Shield USB Controller

By modifying the BIOS settings, you can directly block the USB controller on the motherboard, a method that works almost all computers. Here the author uses the most extensive award bios as an example to illustrate. When you start your computer, press the keyboard's Del key to enter the BIOS setup interface, navigate to the "Integrated peripherals" entry, press ENTER to open, and "USB Controller" set to "Disabled".

In addition, in order to prevent illegal users to change this setting, be sure to add the BIOS password, and then save the exit, the computer will automatically restart, then all the computer on the USB interface is invalidated.

Although this method is simple and effective, but the side effects are also very obvious, because after the USB interface is shielded, not only the flash disk and other mobile storage devices are not available, and even USB interface peripherals, such as USB mouse, keyboard, printer, etc. will not be used, very inconvenient.

Method Two: Modify the registry disable USB driver

In Start/Run, enter "Regedit", press ENTER to open Registry Editor, locate the "Hkey_local_machinesystem currentcontrolsetservicesusbstor" PRIMARY key, double-click the name "Start DWORD value, change the value data to 4.

Note that the "cardinality" on the right defaults to "hexadecimal", the setting must not be changed, and click OK to modify the completion.

Now try, plug in the flash disk, the flash drive does not light up the work, and the system does not react, which proves that our modification succeeded. In order to prevent illegal users to unlock in the same way, it is best to rename the Regedit.exe program or delete it directly.

Tip: The "Start" value is a switch that controls the working state of the USB storage device driver, which can be set to three values, set to 2 when automatic, set to 3 when manual (this is the default setting), set to 4 for deactivation.

Method Three: Use the computer USB port control software

Through the Software control computer USB interface can be said to be one of the most simple and effective methods, currently able to implement these functions of the software is also a lot, after a trial found that the trend to the USB control system feel the best, now introduced to everyone. Open Baidu search box, search "The trend to the USB control system." After the download installation is complete, software has been running in the background, using the combination of key ctrl+alt+u to call out the software interface, enter the administrator password (default is 123) into the Setup interface as shown below, the rest of the operation is very simple, to control what the appropriate options to tick, set the completion, click the background to run. Because the software is password-protected, change settings or exit uninstall software need to correctly enter the password, so the security mechanism is very high, can ensure that control has been in force.

The three methods described above can be said to have pros and cons, although the first kind of simple, but to the use of the computer brings a lot of inconvenience, method two is to be able to do only shielding storage devices without affecting the mouse keyboard, but if the number of computers, modify it is too troublesome, the more than the three methods are more suitable for enterprise users, Powerful operation and very simple, only to upgrade to the official version to pay, in short, according to their own actual situation of comprehensive use of these methods can achieve the best control effect.