If your external USB device is not recognized by Windows 10, and meet Unknown USB Device (Device Descriptor Request Failed) error in Device Manager, use solutions here to troubleshoot and fix the error. As you have noticed, the USB Device in Device Manager has a yellow triangle on it: The error can be caused by hardware issues. In order to fix unknown USB device (device descriptor request failed) error, you need to uninstall the USB drivers. Firstly, open the Device Manager just right-clicking the Windows Logo. Now, locate & expand a Universal Serial Bus controller. After that, right-click on USB drivers, then make a tap on Uninstall. Expand the USB Selective suspend settings. Disable On battery and plugged in. Ensure that you apply the settings. The settings would only come into effect after the computer is restarted. Step 5: keeping the drivers up to date would also help. When it comes to solving the driver issue, updating the driver software is the most effective solution.

Summary :

As the abbreviation of Universal Serial Bus, USB is an external bus standard, used for the specification of connection and communication between computer and external device. USB devices can be seen everywhere nowadays: USB flash drive, USB hard drive, USB memory stick, etc. Today, I’ll show you how to do when you find a USB device shows as unknown.

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As you can easily find, the USB has become a standard and the most popular PC expansion interface of the twenty-first century. USB devices can be seen in all walks of life; even the game console, SD card, and mouse, keyboard & other hardware components of the computer can be connected through the USB interface.

Error: Unknown USB Device (Device Descriptor Request Failed)

But sometimes, you may run into the Unknown USB Device (Device Descriptor Request Failed) error. How does that happen? Can you fix unknown USB device yourself? How to recover data from the problematic USB drive?

You must care about these things when in face of unknown USB drive problem, right? Taking this into account, I decided to show you how to recover data from unknown USB device and the way to deal with the unknown USB device in Windows 10 properly.

Here is a real case of unknown USB Device (Device Descriptor Request Failed) code 43 in Windows 10:

Download Driver Usb Device_descriptor_failure

I have been facing a problem with my USB devices for the past few weeks. Whenever I connect a USB device (mouse, iPhone or even a USB), I get the error Unknown USB Device (Device Descriptor Request Failed) Windows has stopped this device because it has reported problems. (Code 43). As a result, I am unable to connect any USB device to my computer which is very frustrating. In addition to that, I have also discovered that my Bluetooth Devices also shows a similar message Unknown USB Device (Device Descriptor Request Failed) Driver Error. I tried to connect devices (phone, a wireless headset) to my computer but that also failed.– reported by Usman26 on forums.lenovo.com

Recovery: Rescue Data from the Unknown USB Device

Whenever you meet the unknown USB device issue, you are advised to recover data from the unknown USB device at first. When the data recovery has been finished, you can try every possible means to fix the problem (this is for data security reasons).

Warning: According to a survey, lost/damaged data can be recovered to a great extent. But why there are many cases where these data can't be restored completely? In fact, more than 90% of the failure is caused by incorrect operations during the recovery process, resulting in greater damage. So please keep the following suggestion in mind if you have no idea of how to do data recovery: after data loss, shut down the computer immediately, and avoid any operation to the hard drive; otherwise, it will increase the difficulty of data recovery.

USB Device Data Recovery Plan

Step one: if you envy the free USB data recovery, please get the following trial edition and install it on your computer properly.

Step two: connect the target USB device to your computer and launch the software you have just installed by double clicking on the icon.

Step three: shift to the Removable Disk Drive option from This PC (checked by default). Then, take a look at the right panel to see whether your USB device appears here.

If it does appear, please select it and click on the Scan button to start searching for files saved in it.
If you can’t find your USB device, please try to fix the problem & make it appear here after reading Fix USB Flash Drive Not Recognized & Recover Data – How To Do.

Step four: wait for the scan. Then, browse all the files and folders found & listed by the software to figure out whether they contain the lost data you need.

If you have found the documents you want, please check them one by one.
If not all your needed files are here, please wait patiently for the completion of the scan (to get the best recovery result).

Please note that:

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You can choose to Pause the scan when you have to leave for a while and don't want the scan to continue.
You may as well click on the Stop button to cancel further scans completely when you have found all the files you need in the current scan result.

Step five: click on the Save button located in the lower right corner of the software interface. Then, choose a storage path for the selected files (which are waiting to be recovered from the USB device) and click on the OK button to reconfirm your choice (this step can’t be accomplished if you are using a trial edition to scan the USB drive).

To really recover the needed data from the software scan result, you should:

Let me explain my issue: I have two LG Smart TV at home. One is an older 2013 model still with NetCAST and the other is newer with WebOS 3.0. I read on the forum that an official app for Web OS has been released in LG store (to be honest) haven't checked it on WebOS but I cannot find it on NetCAST. Access a whole new world of entertainment with LG Smart TV webOS apps. Content from Netflix, Amazon Video, Hulu, YouTube & much more. Now, outstanding content from Netflix, Amazon Video, Hulu, VUDU, Google Play movies & TV and Channel Plus is right at your fingertips. To download apps, you'll need to sign up for an LG apps TV account. If the app you want is free you can sign up directly on your TV. If you wish to purchase apps, you can either sign up on your TV and then log on to your PC to securely enter your credit card info. Or you can do it all at once on your PC. Lg netcast apps login. 1) Download the LG TV app 'TV Cast' on your TV. You can find it in the LG App Store (Smart World / LG Content Store) either in the entertaiment category or by searching for 'TV Cast'.

Get a license key.
Register your copy of software with that license.
Re-scan the USB device and check files to recover.

This is the end of data recovery from an unknown USB device. Actually, the method also works for the situations where you need to recover deleted files from USB drive or fix a broken USB stick.

As for how to recover data from the HDD which shows as unknown, you should read this post carefully:

Usb Device_descriptor_failure Driver Download Dell

Download Driver Usb Device_descriptor_failure