• Why doesn't a computer or laptop see a flash drive and a removable hard drive? Why doesn’t a computer or laptop see a flash drive and a removable hard drive? Flash drive 3.0 does not work in connector 2.0

    If we connect a 3.0 flash drive to a computer that supports USB 3.0 ports, we see the message “ This device can perform faster when connected to Super-Speed ​​USB 3.0“, this, friends, means that we either do not insert the flash drive into the USB 3.0 ports (with the blue tongue), or there are problems with their functioning, and they work in USB 2.0 mode. What are the causes of problems with the operation of USB 3.0 ports on computers, and how such problems are solved, we will try to understand this in today’s article.

    Let me remind you that the bandwidth of the USB 2.0 interface is 60 Mb/s, and USB 3.0 is 10 times greater, 625 Mb/s. Naturally, few of the removable drives connected to a computer’s USB 3.0 ports operate at the limit of this interface’s capabilities, but it is of fundamental importance for individual storage devices. For example, many modern models of external HDDs using a USB 3.0 interface can provide a linear speed of 100-170 Mb/s. Actually, the same as when connecting internal hard drives to the SATA interface. Whereas on the USB 2.0 interface, the linear speed of external hard drives on average usually remains at around 30 MB/s. Flash drives 3.0 on a USB 3.0 interface write data 2-3 times faster, and read data 3-5 times faster. 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 a 3.0 removable drive, I think that it’s worthwhile to understand the functionality of the USB 3.0 port if there are problems with it.

    BIOS settings

    USB 3.0 ports can operate within USB 2.0 capabilities if configured to do so in the BIOS. This point needs to be checked first. We go into the BIOS and look for where USB ports are configured, usually this is the “Advanced” section of the advanced settings and the “USB Configuration” subsection. Or something with similar names. Here you need to check if USB 3.0 support is active. The USB 3.0 Support setting must be set to Enable. The “XHCI hand-off” parameter should also have the “Enable” value; it can be called “XHCI Pre-Boot Mode”, simply “XHCI” or something else, but with the presence of the key term “XHCI”.

    XHCI is a USB 3.0 controller, and if the BIOS does not implement a separate item to support this interface like “USB 3.0 Support”, its enable/disable is implemented by the controller. On some motherboards, the XHCI controller parameter may have other values ​​such as “Auto” or “Smart Auto”, which ensure that USB 3.0 ports operate in 2.0 mode before the operating system boots with its USB 3.0 drivers. And such values ​​are usually set by manufacturers of computer devices by default in order to make it possible to work with a modern USB interface inside operating systems, while avoiding the failure of the installation of some of them, the distribution of which does not include USB 3.0 drivers. The most striking example is the official builds of Windows 7, the problem with the lack of drivers for which we discussed and solved. If, friends, your PC or laptop has working USB 2.0 ports (with a black tab) for cases of installing Windows 7 without integrated USB 3.0 drivers, you can safely set the XHCI controller setting to the “Enable” position. Just when installing the “Seven”, do not forget that the flash drive must be inserted into the USB 2.0 port.

    Driver update

    Inside Windows, the USB 3.0 interface can operate at the USB 2.0 level for the simple reason of incorrect installation of the controller driver. This problem can be solved by any of the methods of dealing with incorrectly installed drivers - either updating them or reinstalling them. To begin with, we use the standard capabilities of Windows. Let's go to the device manager. Expand the “USB Controllers” branch. Click on extensible host controller. More often it is listed as “Intel(R) USB 3.0 Extensible Host Controller,” but in our case, for example, its manufacturer is the Japanese company Renesas. Call the context menu on it and select driver update.

    USB is the most popular interface for connecting various peripherals to a computer. Its popularity is determined by the fact that it allows not only to perform the function of data exchange, but also powers the connected device. Keyboards, mice, Wi-Fi receivers, external hard drives and much more are connected via USB.

    Table of contents:

    What is USB 3.0

    A logical step in the development of the USB interface is to increase the speed of device data exchange through it. Simply put, the higher the USB version, the faster information is transferred through it. For devices such as a keyboard and mouse, this is not fundamentally important, but, for example, data transfer speed is key when working with external storage media.

    The USB 3.0 specification appeared on the market in 2008, that is, more than 10 years ago. Despite this, USB 3.0 is still not present on all devices. The much more common standard is USB 2.0, which is significantly slower. The data transfer speed via the USB 3.0 protocol reaches 5 Gbit/s, while for USB 2.0 this figure is at the level of 480 Mbit/s.

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    Please note: To distinguish USB 2.0 from USB 3.0, you need to look at the connector. According to the accepted standard, the USB 3.0 connector has a blue partition color.

    Error "This device may perform faster when connected to USB 3.0"

    One of the errors that a user may encounter if there are USB 3.0 connectors on the motherboard is as follows: “This device may run faster when connected to Super-Speed ​​USB 3.0.” The error indicates that the user has the ability to transfer data from the connected device faster than he can now if he uses the USB 3.0 interface.

    This message is not an error, but rather an advice to the user to use a faster port, and this is correct if it appears when the device from which data will be transferred was connected to USB 2.0 when USB 3.0 is available. But, often, such an information message appears when the peripheral was connected to USB 3.0, that is, to the desired port, but Windows cannot determine this.

    How to fix the "This device can run faster" error

    If a device is connected to USB 3.0, but still receives a notification that this device can run faster, this indicates that there is an obstacle in the BIOS or Windows to detect the interface.

    BIOS Settings

    If in the settingsBIOS is not set, what portsUSB 3.0 should work in high speed mode, they will work in standard USB 2.0. Typically, this is the problem that causes the “This device can run faster” error to appear. Follow these steps:


    To understand this procedure, you need to explain what the XHCI parameter is. XHCI itself is a USB 3.0 controller. When you turn it on/off, the fact that the motherboard supports the interface changes accordingly. Not all BIOS versions have a separate item responsible for supporting USB 3.0, and in such cases you need to focus specifically on the values ​​of the XHCI parameter, which, in addition to the “Disable” and “Enable” options, can also be “Auto” and “Smart Auto” "

    Please note: If the parameterXHCI is set to one of the automatic modes, which means that when the computer boots, before startingWindows interfaces will operate inUSB 2.0, and after starting the operating system in modeUSB 3.0.

    Windows Driver Update

    If the BIOS is configured correctly, you need to make sure that there are no problems with the USB 3.0 drivers. In a normal situation, they are installed automatically and no problems arise with them. But, for example, if the distribution from which Windows was installed is “broken” or certain problems arose during the operation of the system itself, the USB 3.0 driver may no longer be detected.

    On some computers, when you connect a USB 3.0 hard drive or flash drive, the error "The device is not recognized" (USB Device Not Recognized) or " Windows stopped this device because it reported a problem.(Code 43)" in Device Manager.

    This article provides instructions on how to resolve the following issues:

    • USB device not recognized/detected
    • USB 3.0 flash drive not recognized/detected
    • USB 3.0 does not work on Windows 7/10

    How to fix: USB 3.0 port on computer does not work

    Before we move on to fixing this problem, you should try the following steps:

    1. Use a different USB cable if you are connecting the hard drive to a USB 3.0 port on your computer.
    2. Connect USB 3.0 to USB 2.0 port.
    3. Remove the USB device, turn off the computer, and disconnect the power cord (or battery if using a laptop). Wait at least 2 minutes and then reconnect the power cord. Turn on your computer and reconnect the USB device.
    4. If you are using Windows 7, Vista or XP, download and run the Microsoft Troubleshooter utility.
    5. Reset BIOS to factory settings.

    Solution 1: Disable Fast Startup feature in Windows 8 and 10


    Note: If the Fast Startup option has already been cleared, check it and restart your computer. After restarting, uncheck the box and restart your computer again.

    1. Reboot computer.

    Solution 2: Disable USB suspend settings.


    Solution 3: Reboot your USB 3.0 device.

    1. Open device Manager. To do this:
    • Press the " Windows» + « R" to open the window " Execute".
    • In the window " Execute» enter: devmgmt.msc.
    • Click Enter.

    2. In Device Manager, expand "ControllersUSB» .

    3. Right click on " RootUSB-hub (USB 3.0 ) " and select " Delete".

    4. Windows will automatically find and install the latest drivers for your USB 3.0 port.

    Solution 4: Install the latest USB 3.0 drivers.

    1. Download Intel Driver Update Utility or AMD drivers.
    2. Run driver update utility and click " Next» on the first screen.
    3. Accept the license terms and click " Install".
    4. Wait while the driver update utility is installed.
    5. Once installation is complete, click " Launch».
    6. Click " Start scanning".
    7. When the driver scan is complete, click " Download", to download the latest drivers for your computer.
    8. Finally, click " Install".
    9. After installation is complete reboot computer.

    Solution 5: Restore Windows to a previous working state

    If the solutions above did not help with the problem of USB 3.0 not working on your computer, you should try restoring your computer to its previous working state. This can be done if you previously activated a Windows restore point.

    Please write in the comments below whether you managed to solve the problem with a faulty USB 3.0 port, and what solution helped in your situation.

    Hello everyone Let's talk about flash drives, or rather about their compatibility. So I’ll write it this way, without going too deep into the terms, so that it’s clear to you and so as not to overwhelm you. So what is a flash drive? This is a storage device. In order for the data to get there, you need a cable, well, a connector, a port. This is roughly an interface. But for maximum comfort, the data must be transferred to the flash drive as quickly as possible, as well as read from it. They are constantly working on this, coming up with new data transmission standards.

    Today, well, in 2016, the most popular revision is both USB 3.0 and USB 2.0, it may be that the latter is even popular. These versions differ mainly in speed and current strength. These are the two main differences. So what can I say here, I can only make you happy, because versions USB 2.0 and USB 3.0 are completely compatible!

    That is, a USB 3.0 flash drive will work smoothly in a USB 2.0 connector and vice versa. However, it is important to understand that all this will work at USB 2.0 speed; to be honest, I don’t remember how much that speed is, but it’s still less than they write. I will say for myself that version 3.0 feels two to three times faster than 2.0, but has even better characteristics.

    Speed ​​is one thing, but there is also such a thing as current strength, this is where it gets a little more interesting. The USB 2.0 version can provide up to 500 mA, and the 3.0 version can provide up to 900 mA, the voltage for both is 5V. But the main thing here is that modern hard drives, well, those that are connected via a USB 3.0 interface, I don’t know how they will work if they are connected to a 2.0 port. They may work well, or they may not. High-quality and stable power supply is very important for hard drives. In general, this point is important and you need to take it into account; the same applies to recharging from USB ports. Check if there are any problems, look for information on the Internet, this is just my advice to you

    As you can see, speed is one thing and it mostly concerns flash drives, but for other USB devices, this is a bit serious. It's better to consult. Personally, if I wasn’t sure, I wouldn’t connect a USB 3.0 hard drive to a 2.0 port, you never know...

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