Disable usb 3.0 in acer bios. How to properly enable usb ports in BIOS. Disconnecting USB from the motherboard

Sometimes it becomes necessary to disable USB ports on a computer or laptop in order to limit access by connecting flash drives, hard drives and other USB devices. Disabling USB ports will help prevent the connection of any drives that could be used for theft important information or cause your computer to become infected with a virus and spread harmful software By local network.

Restricting access to USB ports

Let's consider 7 ways, with which you can block USB ports:

Disabling USB through BIOS settings
Changing registry settings for USB devices
Disabling USB ports in Device Manager
Uninstalling USB controller drivers
Using Microsoft Fix It 50061
Usage additional programs
Physically disconnecting USB ports

1. Disabling USB ports through BIOS settings

Sign in BIOS settings.
Disable all items related to the USB controller (for example, USB Controller or Legacy USB Support).
After you have made these changes, you need to save the settings and exit the BIOS. This is usually done using the key F10.
Restart your computer and make sure the USB ports are disabled.

2. Enable and Disable USB Drives Using Registry Editor

If disabling via BIOS does not suit you, you can block access directly in Windows itself using the registry.

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

Open the Start menu -> Run, enter the command " regedit" and click OK to open the Registry Editor.
Continue to next section
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR
On the right side of the window, find the item “ Start” and double-click on it to edit. Enter the value " 4 » to block access to USB storage devices. Accordingly, if you enter the value again “ 3 ", access will be reopened.

Click OK, close Registry Editor, and restart your computer.

The above method only works when installed driver USB controller. If for security reasons the driver has not been installed, the "Start" parameter value may be automatically reset to "3" when the user connects USB drive and Windows will install the driver.

3. Disable USB ports in Device Manager

Right-click on the " Computer» and select in context menu"Properties" item. A window will open on the left side of which you need to click on the link “ device Manager».
In the device manager tree, find the item " USB controllers" and open it.
Disable controllers by right-clicking and selecting the "Disable" menu item.

This method doesn't always work. In the example shown in the figure above, disabling the controllers (the first 2 points) did not lead to the desired result. Disabling the 3rd option (USB Mass Storage Device) worked, but it only allows you to disable a single instance of the USB storage device.

4. Removing USB controller drivers

Alternatively, to disable ports, you can simply uninstall USB driver controller. But the disadvantage of this method is that when the user connects a USB drive, Windows will check for drivers and, if they are missing, will offer to install the driver. This in turn will allow access to the USB device.

5. Prevent users from connecting USB storage devices using a Microsoft application

Another way to deny access to USB drives is to use Microsoft Fix It 50061(http://support.microsoft.com/kb/823732/ru - the link may open near the mituta). The essence of this method is that 2 conditions for solving the problem are considered:

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

Within the scope 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 link given above.

It should also be taken into account that this method Not suitable for all versions of Windows OS.

6. Using programs to disable/enable access to USB storage devices

There are many programs for setting a ban on access to USB ports. Let's consider one of them - the program USB Drive Disabler.

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

7. Disconnecting USB from the motherboard

While physically unplugging USB ports on a motherboard is an almost impossible task, you can unplug ports on the front or top of your computer by unplugging the cable that goes to the motherboard. This method will not completely block access to USB ports, but will reduce the likelihood of using drives by inexperienced users and those who are simply too lazy to connect devices to the back of the system unit.

! Addition

Denying access to removable media through the Group Policy Editor

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

Run gpedit.msc through the Run window (Win + R).
Go to the next branch " Computer Configuration -> Administrative Templates -> System -> Access to Removable Storage Devices»
On the right side of the screen, find the item " Removable drives: Deny reading."
Activate this option ("Enable" position).

This section of Local Group Policy allows you to configure read, write, and execute access for different classes of removable media.

You can enable USB ports on a laptop through the BIOS, Device Manager, Registry Editor, or Group Policy Editor. If access to the USB connectors was intentionally prohibited using special software, then you can unblock it in a program where the interface is blocked. All methods are available ordinary users and do not require special training.

Disabling unnecessary devices

If the USB ports suddenly stopped working and you are now looking for how to turn them on, then the first thing to do is see if the device is connected to the laptop a lot. When using a USB hub, the laptop may not be able to supply power to all devices, causing the USB ports to become unresponsive. Before you do USB setup in the BIOS, disconnect unnecessary equipment from the laptop and check if the ports work. If nothing has changed, then reboot the laptop and go into the BIOS.

Enabling ports in BIOS

For BIOS input When loading, press Delete, F2 or another key depending on the model motherboard. You can view it on the start screen.

In the case of a laptop, this screen does not appear because the fast boot feature is activated. You can temporarily disable this technology in the power settings:

Restart your computer. Without quick launch you will see all stages Windows boot and you can get into the BIOS. If this doesn't work on Windows 8 or 10 with UEFI BIOS, try the following method:

After reboot, select "Diagnostics", then go to " Additional options" and open the UEFI Firmware Settings. Click "Reboot", the next time you start, the BIOS UEFI interface will appear.

To configure USB ports in UEFI, you need to go to the “Peripherals” tab and set the “Legacy USB Support” parameter to “Enabled”. If support for USB 3.0 ports is required, activate the corresponding item (USB 3.0 Support).

In the AMI BIOS, go to the “Integrated Peripherals” section and set the value “Enabled” for four options:

USB EHCI Controller.
USB Mouse Support.
USB Keyboard Support.
Legacy USB Storage Detect.

In Phoenix AwardBIOS, you need to go to the “Advanced” tab and go to the “USB configuration” section. All parameters inside must be set to “Enabled” for the USB ports to work.

In all BIOS versions, to save the configuration, you must press the F10 key and confirm the selection by writing “Y”.

Windows setup

If in BIOS ports are enabled, but devices connected via the USB interface are not detected by the system, then check the registry editor, device manager and group policy editor. It is possible that changes were made to the system through them, due to which the ports are no longer working. You should start with the Registry Editor.

If USB support is enabled in the Registry Editor, check the controller drivers in Device Manager.

If you see an icon next to the controller that looks like exclamation mark, and you are sure that the interface is supported in the registry editor, then this means that there are problems with the drivers. First try updating the software:

If updating the controller software does not help, update the driver motherboard. Download it from the manufacturer's website and install it manually. Another way to update the drivers of all controllers at once is to remove them from the system. Right-click on the controllers and select "Delete". After a reboot, the system will automatically install controller drivers, so you no longer have to worry about how to enable the USB ports - they will work just like that.

If only removable devices connected via USB do not work, check in the Group Policy Editor to see if a read ban is set.

Find the Removable Devices: Deny Read option and set it to Disable. Problem identifying flash drives and external drives must disappear.

Hardware port damage

If your laptop's USB ports are damaged or south bridge on the motherboard, then no methods will help enable the interface. Therefore, if the connectors stop working after mechanical impact, liquid getting inside the housing, short circuit or other negative factors, you should take the laptop to a service center for diagnostics.

In the case of a system unit, some USB ports can be replaced independently, but in a laptop there is no such possibility, because all connectors are soldered to the motherboard.

This article is devoted to the question of how to enable USB support. As it turns out, not all users know that the functions Universal Serial Bus (in Russian interpretation - “Universal Serial Bus”) can be enabled and configured through BIOS Setup. We will not focus on the circumstances due to which you may need this operation - they may be different. For example, you discovered that the USB devices on your computer are running slower than they should, and you want to check whether your computer's BIOS supports this bus standard latest version.

First, enter BIOS Setup when booting your computer and laptop. A separate article was devoted to how to do this on our website. It is worth noting, however, that the BIOS section with USB functions is not always obvious to the user. In addition, different BIOS manufacturers in different versions may have bus management functions located in different sections. These could be the Advanced, Integrated Peripherals, Onboard Devices, etc. sections.

It may, of course, happen that the section with the settings USB functions in your laptop's BIOS or desktop computer just no. This situation can most often occur in laptops, in which the number of options available to the user is not very large at all. In the BIOS of my HP netbook, for example, I did not find such an option, no matter how hard I looked. Well, that means it’s not fate...

Setting USB options in BIOS

The number and range of USB features you can adjust in the BIOS can also vary greatly depending on the version. Often in Setup you can install support for a USB mouse and keyboard, and attached external drives. You can also disable/enable connectivity altogether USB devices or enable support for a specific version, such as USB 2.0.

List of the most common USB options (in different versions BIOS may have different names):

USB Function – enable/disable the Universal Serial Bus controller
USB 2.0 Controller Mode – switching the USB 2.0 controller to 1.1 mode and back
Assign IRQ For USB – assign IRQ to USB devices
USB Speed – setting the operating speed USB bus
– USB keyboard and mouse support
USB Storage Support – support for external drives on this bus
Emulation Type – setting USB drive emulation modes

Once you have set the option you need, be sure to save it by selecting the BIOS Setup “Exit and Save Changes” option to restart your computer.

When setting USB parameters in the BIOS, however, you should remember that they incorrect installation may cause any devices permanently connected to the Universal Serial Bus, such as a keyboard or mouse, to become inoperable.

Conclusion

In this article, you learned how to enable USB support, as well as set USB options in the BIOS of your computer or laptop. As a rule, this operation is quite simple and will not take you much time.

USB ports may stop functioning if the drivers are lost, the BIOS settings are damaged, or the connectors become damaged. mechanical damage. The second case is often found among owners of a recently purchased or assembled computer, as well as among those who decided to install an additional USB port on the motherboard or those who previously reset the BIOS settings.

BIOS is divided into several versions and developers, therefore, each of them may have a significantly different interface, but the functionality for the most part remains the same.

Option 1: Award BIOS

This is the most common developer basic systems I/O with standard interface. The instructions for it look like this:

Option 2: Phoenix-Award & AMI BIOS

BIOS versions from developers such as Phoenix-Award and AMI have similar functionality, so they will be considered in one version. Instructions for setting up USB ports in this case look like this:

Option 3: UEFI interface

UEFI is a more modern analogue of BIOS with a graphical interface and the ability to control using a mouse, but in general their functionality is very similar. The instructions for UEFI will look like this:

Connecting USB ports will not be difficult, regardless of BIOS version. Once they are connected, you can connect a USB mouse and keyboard to your computer. If they were connected before, their operation will become more stable.