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How to enable USB controllers. How to enable USB ports in bios

In this article, we will deal with how to connect Android to a computer / laptop via USB as a flash drive and can be transferred to information without using a classic flash drive.

This article is suitable for all brands producing phones on Android 9/8/7/6: Samsung, HTC, Lenovo, LG, Sony, Zte, Huawei, Meizu, Fly, Alcatel, Xiaomi, Nokia and others. We are not responsible for your actions.

The version of Android 4.4 Kitkat was the ability to install USB connection as a USB flash drive. PC saw the device as a removable disk and provided the same rights: the user could, and perform other actions.

Then in the new versions, the android USB mode was replaced with MTP, in which only the data transfer function remained, and the same formatting does not work.

USB connection configuration

To control the connection to the computer via USB, it is necessary. To do this, add to android settings Section "For Developers" (if not):

  1. Open settings.
  2. Go to the "About Phone" or "About Device" section.
  3. "Assembly number" or "MIUI version".
  4. Click on this item until you see a message that you have become a developer (usually grabs 7-10 clicks).
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After the selection settings appear in the settings, you can enable USB debugging. The item is called, so you only need to move the slider to the "Enabled" position and confirm the resolution.


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Now you can connect the device to the computer via USB and select the operation mode. In the latter android versions The most used are:

  • MTP - Transferring any files from a computer to the phone and vice versa.
  • PTP - Transfer photos, as well as transfer files that are not supported in MTP mode.
  • Only charging.

Connection in the USB drive mode

If you can not get used to working with a media player, return to using the USB drive mode. To do this, you will need:

The use of this method may damage system files. In this case, you will have to reflash Android.

To android connected to a computer as a drive:

  1. Run USB Mass Storage Enabler.
  2. Give the superuser rights and agree to changing Selinux.
  3. If the device is supported, the main application menu will open.
  4. Click "Enable USB Mass Storage".

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Now when connecting to a PC, the phone or tablet will be displayed as a drive. To connect in MTP or PTP mode, it is enough to restart the device. After completing the drive mode, go to the application again and disconnect the USB Mass Storage.

If we connect a flash drive 3.0 to a computer that provides support for USB ports 3.0, and we see the message " This device can work faster when connected to Super-Speed \u200b\u200bUSB 3.0", These are friends, it means that we either insert the USB flash drive not in the USB 3.0 ports (with a blue tongue), or with their functioning there are problems, and they work in uSB mode 2.0. What causes the causes of problems with the work of USB 3.0 ports on computers, and how such problems are solved, we will try to understand today's article.

I remind you bandwidth USB 2.0 - 60 MB / s interface, and USB 3.0 - 10 times more, 625 MB / s. Naturally, rare from removable drives connected to the ports of USB 3.0 of the computer work at the limit of the capabilities of this interface, but it is of fundamental importance for individual information storage devices. So, for example, many modern models External HDD on the USB 3.0 interface will be able to issue a linear speed of 100-170 MB / s. Actually, the same as when connecting the inner rigid disks to the SATA interface. Whereas on the USB 2.0 interface, the linear speed of external hard drives on average is usually held at 30 MB / s. USB flash drives 3.0 on the USB 3.0 interface write data faster 2-3 times, and read - faster than 3-5 times. By the way, we talked in detail about the operating speeds of flash drives on USB 2.0 and 3.0 interfaces. In general, friends, if you have removable drive 3.0, I think that it is necessary to deal with the performance of the USB port 3.0, if problems have arisen - it's worthwhile.

Settings in bios.

USB 3.0 ports can work as part of USB 2.0, if so they are configured in the BIOS. This moment must be checked first. We go to the BIOS and are looking for, where USB ports are configured, usually this is the Advanced Advanced Settings section and subsection "USB Configuration". Or something with similar names. Here it is necessary to check whether active is active uSB support 3.0. The "USB 3.0 Support" parameter must be "Enable". The "Enable" value should also be at the XHCI Hand-Off parameter, it may be called "XHCI Pre-Boot Mode", simply "XHCI" or somehow differently, but with the presence of a key term "XHCI".

XHCI is a USB 3.0 controller, and if the BIOS is not implemented by a separate item for supporting this "USB 3.0 Support" type interface, its turning on / off is implemented due to the controller. On some motherboards at the XHCI controller parameter, there may be other "auto" or "Smart auto" type, providing USB 3.0 ports in 2.0 mode before downloading operating system With your USB 3.0 drivers. And such values \u200b\u200bby manufacturers computer devices Usually set by default, in order to make it possible to work with the modern USB interface inside the operating systems, while avoiding the collapse of the installation of individuals, which does not have USB 3.0 drivers in the distribution kit. Most bright example - Official builds of Windows 7, the problem with the lack of drivers of which we discussed and solved. If on your, friends, pc or laptop for cases windows installations 7 Without integrated USB 3.0 drivers, USB 2.0 (with black tongue) are working, you can safely set the XHCI controller setting to the "Enable" position. Only when installing the "seven" do not forget that the USB flash drive must be inserted into the USB 2.0 port.

Update Driver

Inside Windows operate at USB 2.0, the USB 3.0 interface may vary by the banal reason for the incorrect installation of the controller driver. This problem is solved by any of the ways to combat incorrectly installed drivers - or their update, or reinstalling. We use full-time windows features. We go to the Device Manager. Reveal the USB Controllers Branch. Click expandable host controller. More often it is as "an expandable host controller Intel (R) USB 3.0", but in our case, for example, its manufacturer is the Japanese company Renesas. Call the context menu on it and select the driver update.

The USB ports on the computer and laptop windows? First of all, you need to check each port on your computer if you do not work everything needs to establish the cause.

The easiest I. reliable way, Connect it USB keyboard, Turn off the computer, enable and try Go to BIOS familiar to the way. If you get into the BIOS as before you can't one port, then the cause is technical.

In this case, you need to open system unit And check connection uSB connectors to motherboard. If everything is all right to install in the PCI slot discrete USB card And whether the ports of it work (maybe your motherboard is burned).




If you can get into the BIOS, and USB ports do not work in the operating system it is worth checking for installed drivers, reinstall them, update to latest version.


Sometimes USB ports do not work if the new version equipment is connected to them (until USB 1.0 or USB 2.0 connect the USB flash drive or external HDD with USB 3.0), so it is worth checking the equipment for compatibility.

Remember that USB ports besides transmission of information also have the power ports, so it often happens that due to a weak power supply, they can also work incorrectly.

If a computer or any application incorrectly work after connecting the device to USB port., there may be several reasons for this. Before you accurately determine the source of the problem, you need to check the operation of the peripheral device, the port USB or USB drivers. Below we will give a list of several simple steps to help you determine the problem and eliminate it yourself without referring to the computer master.

In order to restart the USB driver and software that conflict, you just need to restart the computer. Very often it helps to eliminate the problem.

Sometimes another order can help. Turn off the computer and disconnect any devices connected to USB ports from it, including the keyboard and mouse. Turn on the computer again and when the operating system is loaded, connect all peripheral devices disabled to USB ports to USB ports. If when connected specific device, for example, USB RAM, the problem will arise, check for yourself, on which port it happened. Try connecting this device to another free port. If the problem is gone, then a certain USB port is faulty. Otherwise, the problem must be searched or in the peripheral device, or in a USB cable.


USB cable and connector

In the case when the USB port does not work, very often the cause of the malfunction may be damage to the cable or connector. Carefully inspect these connectivity elements for damage to the type of cracks, chips or cuts. Look inside the USB connector and connector and check if they are dirt, dust or other small items. You can independently clean the connectors using a dry tassel or air compressor (vacuum cleaner). You need to do this when the cable is disconnected. If the interface cable is frightened and interrupts, then it should be replaced immediately - a new cable is worth a penny.

Differentiation of the problem - port or device

If a program or computer stops normal operation immediately after connecting the new device to the USB port, then you should try to connect another device to it. If the computer continues normal operation, then the problem is in the peripheral device. Do you have a second computer? Try connecting a suspicious device to it and rewrote its performance. If the situation is repeated, it is definitely necessary to change. If you used a USB hub, eliminate it from the connections circuit. In the event of a USB problem, the device should be connected directly. In addition, problems may occur if you simultaneously connect a lot of peripherals or connect several devices of the same model simultaneously, for example, two smartphones or printer.

Reinstall Driver

Usually, Windows issues a message if a problem with a USB driver is detected. If this happens, open the "Control Panel" through the operating system starter. Find the Device Manager item in it, open the utility and in the list of installed equipment Find the USB Controllers subsection or "Universal Sequential Controllers uSB tires" Open this item and find the item that is marked in the list of USB devices. exclamation familiar On yellow background. If you find such a device, click on it with the right mouse button and select the Delete Context menu item. Reboot the computer. After that, the operating system independently reinstalls the remote driver immediately after its download. If the reinstalling driver does not solve the question, you should try to update it.

Update Driver

In the event that the USB port does not work, you can try to manually update the USB device driver. To do this, open the "System and Security" section in the "Control Panel" in which you find the device manager subsection. Enter the administrator credential if they are requested by the system. Next, find a problem USB device in the USB Controllers list and double-click the Settings dialog box. Open the Driver tab, and click the "Update" button. To start updating the driver, enter the system administrator credentials. After updating, overload the computer and check the performance of the problem device.

What is the difference between USB ports that are from the back of the computer and with the front? The difference is that those USB ports that are behind are connected directly to the USB controller, which is located on the motherboard itself, and is an integral part. But the front USB ports go through the USB hub and connect through the loop, and here it may be that the cable is poor quality, and the problems with ports can appear.

If you connect to two USB ports on the front panel, two demanding USB-demanding power supply (for example, a portable hard disk and a telephone), then a lack of supplying one of these devices will arise, and it will not work correctly, or it will not work at all. Why do you ask? The USB controller provides a device connected to it - 500 MA by 5 V. If the USB interface device does not have an additional power adapter, it means that it should work from the USB interface, without additional power, that is, 5 V should be enough, but if to the controller USB with a hub is connected by two devices.

USB ports on the front of the computer are USB hubs that have one 9-pin input connector for connecting to the motherboard on one side and several USB ports to connect devices on the other. The USB hub cable transmits information to the connected device, and also feeds it with electricity, but if the devices are two, and the power to the hub is still 500 mA per 5 V, then of course the power supply is missing.

You can connect to a USB concentrator mouse, keyboard and flash drive, and if you want to use other devices such as smartphone, external hard disk etc. You must use a USB hub with an optional power supply supply 5 V to each USBPORT.
USB ports do not work

If you have a suspicion that the USB port on your computer does not work, check the device you connect on another computer. After all, it happens and such that the USB port does not work, but the device you are trying to connect, but the other way around. Check the device on another computer. Award Bios. Find the Integrated Peripherals parameter, and in AMI BIOS Parameter Advanced, we go to them and see the USB Configuration point, click Enter, our USB Controller or USB Controller 2.0 must stand in the Enabled position, that is, it is turned on.

USB ports do not work

It also happens that the USB port works, and the device is properly, but there is no connection of the computer and the device ...... Here is the fault can be in a USB cable. And there are cases that USB ports on the front panel are not connected at all.
May not be a USB hub? Try using another USB concentrator with a good shielded cable. Connect it to another 9-PIN connector on the motherboard.

It happens USB ports on the front panel connected with the help of pins cables (otherwise they say otherwise), it may well be that the cable is defective or the pinout confused.

Also, the cause of USB malfunctions can be low-power, and possibly not a good, power supply.
And maybe a faulty to be the southern bridge. You should not forget about updating drivers, both for connected devices and for the motherboard chipset.

You can overload the USB concentrator and the connected device will stop responding to you, it is cured by the usual reboot of the computer. Almost all hubs are present, there is a power management and Windows can turn off the energy saving device.

First, if the port is not entirely correct or the device connected to the computer is not determined by the system when connecting a flash drive to a computer or other equipment connected to a computer; in this case, you should make sure that the controller is turned on PC motherboard.

Quite often users forget about the turn on the USB controller. It seems to be a simple, but still a common problem, when the user launched a PC, and the device was not determined. Here it is possible to fix everything, for this you need to go to the BIOS and include the appropriate parameter. By the way if you do not know what BIOS is, I recommend you to read the article.

So, go to BIOS Find there Item "Integrated Peripherals - It concerns in Award BIOS", or in Ami Bios. - Advanced. "

Next, click "Enter" and go to "Onboard Devices Configuration" and see the "USB Function" and "USB 2.0 Controller" items, were in the "Enabled" position. If everything is the case, it means everything is included. Otherwise, the parameter can be filled (OFF), the position "disabled". If the option is turned off, then it should be turned on. Next, we save the changes, then reboot the PC system and check the working capacity of the USB port. Be sure to check whether the USB ports are connected on the front panel of the system unit to the motherboard itself with the help of the so-called block.

If the port never earned, then moving on.

Secondly, maybe it's about the inoperability of the port and is hidden at all in USB cable extension? For example, there are such situations when the computer does not recognize the peripheral device (printer), for the simple reason that the USB cable itself is simply damaged. The reason for the cable damage can be the most diverse, for example, you accidentally put a chair on a cable or some difficult thing and simply simply changed it. Therefore, do not be lazy to check the cable itself.

Thirdly, it is quite rare to encounter such a problem when the USB port lacks food. I will give you specific example. Imagine that to the front of the system unit housing in a USB connector, you connected the USB flash drive and printer. As a result, the operating system when sending data to print, tells us that the document failed to print. In general, your computer simply does not see the printer. And if you restart the computer, the printer is determined by the system, and you can easily print a document. However, after a while, the computer again loses the connection to the printer and the printer does not print. Do you know why?

Such, it would seem, at first glance, a banal problem is related to the fact that there is a shortage of power for the USB port. As a result, the USB port refuses to function properly. Mostly such a casus associated with a lack of food occurs when connecting multiple devices to the front panel of USB ports.

Of course, it is not always, but still there are such situations. These USB ports are connected to the motherboard using a cable. This cable in addition to data transfer, in addition, the USB of the hubs themselves is supplied. It is possible that the power supplied at the same time by two devices connected to the USB hub may not be enough. In this case, I can recommend to connect the printer to the built-in USB port, which is located on the PC motherboard.

You can also change the CMOS battery on the board. It happens that the problem completely disappears after replacing the battery on the motherboard. What is this battery and where it is, you can find out in this article:

In general, if you do not work USB port, which is located on the front panel of the system unit housing, then try to replace the USB hub itself. Who knows, perhaps it is he is defective.

You can also try to stick the cable to another USB connector on the motherboard.

Fourth, if the USB port controller, which is responsible for the definition and launch of the device itself, is failed. There is, of course, the ability to take and turn off the controller itself on the motherboard, but it takes time to it, you need to have a controller himself, and, of course, soldering station. From the point of view of time costs, not quite appropriate. Another option is to trust the specialists, the truth here also has its own underwater stones, the price, quality of work, as well as the competence of a specialist who works specifically on this problem.

Fifth, peripherals and mobile devices may not be recognized on your computer due to lack of drivers and special software. It is impossible to exclude the fact that if you use your operating system already enough long time And the system was not updated at all, and in general the Windows assembly is not an original version, then in this case there is a place that the drivers are considered already outdated and therefore the system constantly happens.

Sometimes Windows generally disables the USB hub in energy saving purposes. That the USB device is not disconnected, you will need to do the following.

Open the Device Manager, by right-clicking on the "Computer" label by selecting "Properties".

After the device manager window opened, you should double-click the mouse button on "USB controllers" by the left button, reveal the branch.

Now you have to go to the root USB hub and in the "Power Management" section, remove the tick, as shown in the figure below.

Sixth, sometimes reinstalling the operating system helps to eliminate the problem when the USB port does not work. Although, of course, first try to roll back the system in the previous state. Here is an article in which you will learn how to do it:

On-seventh, perhaps there is some faulty equipment in your system, which is just the same and serves an obstacle to the normal operation of the USB port.

This problem is very relevant in our time. After all, quite often users directly face it. So there is a solution. USB ports can hang in the computer, clinging contacts, and many more additional problems can occur when working at a computer.

We find a way out of our situation, check all devices for connecting and shutdown. You will need to disable all devices and connect one by one, for example, you first connected the keyboard first and see if it works, then you connect the next device, let it be a mouse and so on. Connect additional USB devices if you do not work, it means that the problem is solved or need to be signed in the peripheral devices, maybe there it closes, and you never know.

In eighth, generally forgot to include the serial bus controller in the device manager. There are times when you do not pay attention to the work of USB devices, turned on the computer, downloaded music, listen and you enjoy new works of art. True, everything comes unexpectedly, suddenly needed a USB device, and then silence, it does not work. Everyone comes to mind, maybe the controller is not included, let's take and check and there.

In each PC, there is a device manager that shows which devices are connected, whether the drivers are installed and updates are made.

In general, I think that you probably already know that in the absence of any driver, the system automatically marks it with a yellow exclamation mark, it means a malfunction, as a result, when two mouse clicks, open the optional window here, code information is displayed. Faults and capabilities of its recovery.

V-ninth, if all the above, the listed methods did not give a positive result, then I recommend that you install the controller to the USB PC motherboard.

If a low-power supply unit is installed on your computer, for example, 300 W, it is likely that the reason for all the troubles is hidden in it, install the power supply in power, say 500 W and check whether the USB port earned.

By completing today's article, I would like to say that it is not always possible to easily find the culprit of all problems, sometimes it is not enough just to reinstall Windows to find out what happened in fact.

If there are no drivers for serial tire controllers and the controllers themselves are marked with an exclamation mark, in this case, or install the drivers for the controller, or you can delete all controllers and restart the computer. After downloading the computer, the system will try again to install them, and perhaps all USB ports may again work properly.

Restarting a computer
If all USB ports for any reason have stopped functioning, and USB devices are not defined, then it will only be enough to restart the system unit. Perhaps this procedure will be immediately eliminated. This may happen if there were no problems when loading the drivers.

In the Device Manager, update the equipment configuration
A situation may occur when the reboot of the computer is not possible, because it performs any important operations. That is why without rebooting the entire computer, you can reboot alone only by the driver. This can be done through the Device Manager. To take such an action, right-clicking on the "My Computer" label to select "Management".

In the window that is highlighted as a result of this, you need to click on the "Action" tab, after which you need to click "update the equipment configuration". If the "USB Controllers" section appeared as a result of this procedure, the problem is completely solved, and the USB will continue to function.

Disable USB controller
There is one wonderful way to make USB ports function. To do this, disable and reinstall USB controllers. Immediately, the same "Device Manager" should be launched. A list of equipment in a new window will be displayed, and you need to find the USB controller section. Next, each of these devices are allocated and deleted. After all devices are deleted, you must restart the computer. As a result, the controllers will be reinstalled, so USB ports will be available available.

USB controllers: Driver Update
The USB controller drivers can be damaged, therefore, respectively, USB ports will not work. In such a situation, the only correct output is a discovery and reinstalling the correct drivers. To make this procedure correctly, you should find out the company's USB manufacturer's company, because you need to download exactly the corresponding driver. If you manage to perform this task, the driver installation in one moment will solve the problem.

Disable others uSB devices
Of course, situations may occur when a lot of USB devices are connected, and the laptop will be simply overloaded. Not always power can be enough for all connected devices.

Login to BIOS settings

To proceed to changing the configuration, you need to get into the appropriate menu. It can be opened during the inclusion personal computer - before starting download windows From a hard disk.

Turn on PC. In case it is already working: reboot. Wait for sound signal Speaker: A short single beep indicates that all the internal components needed for the computer are detected.

Now you need to click hot key To call the configuration. This needs to be done before changing the screen. If you did not have time, and Windows load started - reboot. Keys depend on the model of the installed motherboard and version bIOS firmware. You can find it in the user manual, which is attached to the motherboard, on the manufacturer's official website or look at your PC screen when downloading it:

PC screen when loading

If you do not know the board model - nothing terrible. Just try pressing the following keys: Tab, DELETE, ESC, F1, F2, F8, F10, F11, F12. One of them is suitable for sure.

It is not necessary to try only 1 option at a time. You can easily click on all the buttons from the list. One of them will suit and launch the BIOS settings, and the rest will be ignored.

Login to the BIOS / UEFI settings of the newest PC

Many modern computers are loaded so quickly that to get the keystroke method does not work on. It is also relevant for laptops. Therefore, the latest Windows versions of Windows got new feature launch. Show on the example of Windows 8.1.
Spend the mouse over-down or bottom-up on the right edge of the screen and in the window that appears, click "Parameters".
Click on the inscription "Changing computer parameters"
Click "Update and Restore". Read in a special mode
Next: "Restoration".
In chapter " Special options Downloads »Click Restart Now.

Your computer or laptop will restart in setup mode. After restarting the PC, you can also select the option of starting from a USB drive or DVD.

Navigating in the menu

Almost all versions of bios are deprived graphic interface. This means that you will have to work only with the keyboard, such as in windows consoles. Navigation is carried out using the up-down and "right" arrows - "left". To open any partition, use the Enter key to go back - "Escape". A small memo on the used keys is always shown on the screen.

UEFI microstrogram complex is installed on the most expensive and powerful motherboards. It supports large quantity Drivers and knows how to work with the mouse. Its interface will be habit windows users and other modern operating systems.

Each version has its own interface and sets of options. Even the names of the same parameters may vary. Further, the article describes several popular BIOS Releases.

Very common option that can be found on many modern computers. The main menu is divided into 2 parts: a list of categories and various actions, such as output or saving. You will work with the left side.

You need to go to the section called "Integrated Peripherals". There is no Russian-language version of the interface, so all the commands are only in English. Using the Down Arrow, select this item and press ENTER.

Here you need to enable (enabled) 4 options:

USB EHCI Controller is the main controller. If there are ports of version 3.0 on the motherboard, this item will be divided into 2 parts: "Controller" and "Controller 2.0";
USB Keyboard Support - keyboard support;
USB Mouse Support - support for mice;
Legacy USB Storage Detect - work with external storage facilities data: flash drives, disk drives, disks of smartphones and digital cameras.

In some old versions there are only 2 points "USB CONTROLLER" and "Legacy USB Storage Support".

When you finish with the settings, press the F10 key to save the changes made and restart the computer.

Phoenix awardbios.
Another popular version that can often be found on modern laptops. Has no main pagelike AMI, but equipped with convenient thematic bookmarks at the top. You can navigate between sections using the "left" arrows - "right", and between items - using "up" and "down".

Go to the Advanced section using the Right Arrow. Find the category "USB Configuration" in it. All items of this section must be translated to the "Enabled" position. In some versions, the "USB Configuration" category can be in the "Peripherals" tab and not in Advanced.

To complete the operation in the menu, press F10 and confirm the output.

AMI BIOS FOR ASUS
AMI version used on ASUS laptops. Externally, very similar to Phoenix is \u200b\u200ba similar bookmark panel. USB settings are located in the Advanced section. Go there, turn on all options and exit using the F10 button.

UEFI
Contrary to popular belief, UEFI is not part of the BIOS. It is more likely to be called a more advanced, but less popular competitor. There is a large number different versions, Each with its interfaces. However, management is similar to the usual Windows, so you can easily find the necessary options.

Windows settings
If at the BIOS level all ports and controllers are included, but USB ports do not work, perhaps the problem in your settings windows systems.

First, try simply disable and connect the device again. This will cause verification of drivers. If something is wrong with them, Windows will try to reinstall them.

If nothing happens when reconnecting, try to enable the controller in windows registry. To do this, do the following:

Call the "Run" dialog using Win + R (either through "Start": in XP and 7-ke, clicking on it with the left mouse button, and in 8 and 10 versions - right mouse button). Overvail
Enter
regedit.
and click OK.
Go to "HKEY_LOCAL_MACHINE SYSTEM CURRENTCONTROLSET SERVICES USBSTOR". RESTORR
Double-click on the "Start" entry to open the edit window.
Change the value to "3". For any other parameter values, USB ports will not work.

Sometimes there is a need to disable USB ports on a computer or laptop to limit access to connecting flash drives, hard disks and other USB devices. Disable USB ports help prevent connection of any drives that can be used to theft important information Or cause a computer to infect the computer with a virus and disseminate malicious software on the local network.

USB access restriction

Consider 7 waysWith which you can block USB ports:

  1. Disable USB through the BIOS settings
  2. Changing the registry settings for USB devices
  3. Disable USB ports in Device Manager
  4. USB Controller Drivers Uninstallation
  5. Using Microsoft Fix IT 50061
  6. Using additional programs
  7. Physical shutdown USB ports

1. Disable USB ports through BIOS settings

  1. Enter the BIOS settings.
  2. Disconnect all items associated with USB controller (for example, USB Controller or Legacy USB Support).
  3. After you have done these changes, you need to save the settings and exit BIOS. This is usually done using the key. F10.
  4. Restart your computer and make sure that USB ports are disabled.

2. Enable and disable USB drives using the registry editor

If you do not fit through the BIOS, you can close access directly to the Windows OS itself using the registry.

The instruction below allows you to close access for various USB drives (for example, flash drives), but other devices, such as keyboards, mice, printers, scanners will still work.

  1. Open the Start menu -\u003e Run, enter the command " regedit."And click OK to open the registry editor.
  2. Go to the next section

    HKEY_LOCAL_MACHINE \\ SYSTEM \\ CURRENTCONTROLSET \\ SERVICES \\ USBSTOR

  3. On the right side of the window, find the item " Start."And double-click on it to edit. Enter value " 4 »To block access to USB drives. Accordingly, if you enter again the value " 3 "Access will be open again.

Click the "OK" button, close the registry editor and restart the computer.

The method described above only when installed driver USB controller. If for security reasons, the driver was not installed, the "Start" parameter can be automatically reset to "3" when the user connects uSB drive And Windows will install the driver.

3. Disconnect USB ports in Device Manager

  1. Right-click on the icon " A computer"And choose in context menu Item "Properties". A window will open in the left part of which you need to click on the link " Device Manager».
  2. In the device dispatcher tree, find item " USB controllers"And open it.
  3. Disconnect controllers by pressing the right mouse button and select the "Disable" menu item.

This method does not always work. In the example shown in the figure above, the disconnection of the controllers (2 first items) did not lead to the desired result. Disabling the 3rd point (USB storage device) worked, but it makes it possible to disable only a separate USB drive instance.

4. Deleting USB Controller Drivers

As an option for disconnecting ports, you can simply uninstall uSB driver Controller. But the disadvantage of this method is that when you connect the USB drive, Windows will check the availability of drivers and in absence to install the driver. This in turn will open access to the USB device.

5. Bans User Connecting USB storage devices using Microsoft Applications

Another way to prohibit access to USB drives is the use of Microsoft Fix IT 50061 (http://support.microsoft.com/kb/823732/en - the link can be opened near Mitutu). The essence of this method is that 2 conditions for solving the problem are considered:

  • USB drive has not yet been installed on a computer
  • The USB device is already connected to the computer.

As part of this article, we will not consider this method in detail, especially since you can study it in detail on the Microsoft website using the reference above.

Should still be taken into account this method Suitable not for all versions of Windows.

6. Using programs for disconnecting / enable access to USB storage devices

There are many programs to install access to USB ports. Consider one of them - the program USB DRIVE DISABLER.

The program has a simple set of settings that allow you to prohibit / allow access to certain drives. Also, USB Drive Disabler allows you to configure alerts and access levels.

7. Disable USB from the motherboard

Although the physical shutdown of USB ports on the motherboard is a practically impossible task, you can turn off the ports on the front or top of the computer case, disconnecting the cable going to the motherboard. This method will not completely close access to USB ports, but will reduce the likelihood of using the drives in inexperienced users and those who simply be lazy to connect devices to the rear of the system unit.

! Addition

Prohibition of access to removable media via Group Policy Editor

In modern windows versions It is possible to restrict access to removable storage devices (USB drives including) using the Local Editor group Policy.

  1. Launch gpedit.msc.through the "Run" window (Win + R).
  2. Go to the next branch " Computer Configuration -\u003e Administrative Templates -\u003e System -\u003e Access to Removable Storage Devices»
  3. On the right side of the screen, find the item " Removable discs: Prevent reading. "
  4. Activate this parameter ("Enable" position).

This section of the local group policy allows you to configure read, recording and execution for different classes of removable media.