您可能会发现，当您连接外部USB 驱动器^{(USB drive)}时，它无法在您的计算机上运行。相反，您会收到一条错误消息^{(error message)}：您连接到这台计算机的最后一个 USB 设备出现故障，Windows 无法识别它^{(The last USB device you connected to this computer malfunctioned, and Windows does not recognize it)}。这可能是因为设备与您的系统不兼容。USB Device Descriptor负责存储与其连接的各种USB设备的相关信息，以便^{(USB device)}Windows操作系统^(Windows) 以后^{(operating system)}可以识别这些USB设备^{(USB device)}。如果无法识别USB，则USB 设备描述符在^{(USB device)}Windows 10上无法正常工作. 设备管理器^{(Device Manager)}中无法识别的设备将被标记为Unknown USB Device (Device Descriptor Request Failed)，带有一个带感叹号的黄色三角形^{( yellow triangle with an exclamation mark)}。由于各种原因，可能会出现未知USB 设备问题。^{(USB device)}今天，我们将帮助您修复Windows 10 PC中的Unknown USB Device : Device Descriptor Request Failed 错误。

如何在 Windows 10 中修复未知 USB 设备（设备描述符请求失败）
^{(How to Fix Unknown USB Device (Device Descriptor Request Failed) in Windows 10 )}

由于未知 USB 设备问题^{(Unknown USB Device issue)}，您可能会遇到以下常见错误：

• 设备描述符请求失败
• 端口重置失败
• 设置地址失败

此问题背后可能有多种原因，例如：

• 过时的 USB 驱动程序：^{(Outdated USB Drivers:)}如果您的 Windows PC 中的当前驱动程序与系统文件不兼容或过时，那么您可能会遇到此错误。
• 启用 USB 挂起设置：^{(Enabled USB Suspend Settings: )}如果您在设备中启用了USB 挂起^{(USB Suspend)}设置，那么如果所有USB设备未处于活动状态，它们将从计算机中挂起。
• 过时的 Windows 操作系统：^{(Outdated Windows OS: )}在某些情况下，您设备上运行的Windows 操作系统^{(Windows operating)}可能已过时，因此与设备驱动程序冲突。
• USB 端口故障：^{(Malfunctioning USB ports: )}不干净的环境也可能导致USB 驱动器^{(USB drive)}性能不佳，因为灰尘的堆积不仅会阻碍计算机的通风，还会导致USB端口出现故障。
• BIOS 未更新^{(is not updated)}：这也可能导致此类问题。

修复未知 USB 设备^{(Unknown USB Device)}的方法列表：Windows 10计算机中的^{(Windows 10)}设备描述符请求^{(Device Descriptor Request)}失败错误已根据用户方便进行编译和排列。所以，继续阅读！

方法一：基本故障排除^{(Method 1: Basic Troubleshooting)}

方法 1A：保持清洁通风的环境^{(Method 1A: Maintain Clean & Ventilated Ambience)}

不干净的环境和满是灰尘的USB端口可能会导致Windows 10 台式机/笔记本电脑出现未知 USB 设备错误^{(Unknown USB Device error)}。因此^(Hence)，您应该执行以下步骤：

1.清洁笔记本电脑通风口^{( Clean laptop vents)} 和^(&) 端口。^(ports.)使用压缩空气清洁器，同时非常小心不要损坏任何东西。

2. 此外，请确保有足够空间让您的台式机/笔记本电脑正常通风，如图所示。^{(proper ventilation)}

方法 1B：解决硬件问题^{(Method 1B: Resolve Hardware Issues)}

有时，USB 端口或电源^{(USB port or power supply)}出现故障可能会触发未知USB 设备 Windows 10^{(USB device Windows 10)}错误。因此^(Hence)，您应该执行以下检查：

1. 如果是电源问题，^{(power supply)}请在拔下笔记本电脑的电源后尝试^(try) 重新插入USB设备。^{(re-inserting the USB device after unplugging the laptop)}

2.用相同的USB端口^{(USB port)}连接另一个USB设备^{(Connect another USB device)}，检查端口是否有问题。

3.将 USB 设备插入^{(Plug the USB device into a)} 其他端口^{(different port)}以排除USB端口问题。

方法 1C：重新启动 Windows PC
^{(Method 1C: Restart Windows PC )}

在大多数情况下，简单的重启可能会解决未知 USB 设备^{(Unknown USB Device)}（设备描述符请求^{(Device Descriptor Request)}失败）问题。

1.断开^(Disconnect)USB 设备。

2.重新启动^(Restart)您的 Windows PC。

3.  重新连接^(Reconnect)USB设备^{(USB device)}并检查它是否工作。

方法 2：运行 Windows 疑难解答^{(Method 2: Run Windows Troubleshooter)}

您应该尝试运行内置的Windows 疑难解答^{(Windows troubleshooter)}程序来修复Windows 10中的^{(Windows 10)}Unknown USB Device ( Device Descriptor Request Failed) 问题。您可以通过下面介绍的两种方式来执行此操作。

选项 1：运行硬件和设备疑难解答^{(Option 1: Run Hardware and Devices Troubleshooter)}

1. 同时按 Windows  + R 键^(keys)启动 运行^(Run)对话框。

2. 键入msdt.exe -id DeviceDiagnostic 并单击 OK，如图所示。

3. 在这里单击高级^(Advanced)选项，如下所示。

4. 选中标记为自动应用修复^{(Apply repairs automatically)}的框，然后单击下一步^(Next)。

5. 完成此过程后，重新启动 PC^{(restart your PC)}并检查USB是否正在被识别。

选项 2：故障排除 USB 设备故障^{(Option 2: Troubleshoot Malfunctioning USB Device)}

1. 在任务栏中，^(Taskbar,)右键单击USB 设备图标^{(USB Device icon)}。

2. 选择打开设备和打印机^{(Open Devices and Printers)}选项，如图所示。

3. 右键单击​​ USB 设备^{(USB Device )}（例如Cruzer Blade）并选择疑难解答^{(Troubleshoot)}，如下所示。

4. Windows 疑难解答^{(Windows Troubleshooter)}将自动检测问题并修复这些问题。

注意：^(Note:)如果疑难解答程序指出它无法识别问题^{(could not identify the issue)}，请尝试本文中讨论的其他方法。

另请阅读：修复^{(Also Read:)} Windows 10无法识别的USB 设备^{(Fix USB device)}

方法 3：更新 USB 驱动程序^{(Method 3: Update USB Drivers)}

要修复Windows 10中的^{(Windows 10)}Unknown USB Device ( Device Descriptor Request Failed) 问题，建议您更新USB驱动程序，如下：

1.在Windows 搜索栏中键入^{(Windows search bar)}设备管理器^{(device manager)}，然后按 Enter 键^{(Enter key)}启动它。

2. 转到通用串行总线控制器^{(Universal Serial Bus controllers )}部分并双击展开它。

3. 现在，右键单击USB 驱动程序^{(driver )}（例如Intel(R) USB 3.0 eXtensible Host Controller – 1.0 (Microsoft)）并选择更新驱动程序^{(Update driver)}。

4. 接下来，单击自动搜索驱动程序。^{(Search automatically for drivers.)} 

5A。您的驱动程序将自行更新^(update)到最新版本。

5B。如果您的驱动程序已经是最新的，那么您将收到消息：您设备的最佳驱动程序已安装。^{(The best drivers for your device are already installed.)}

6. 单击关闭^(Close)退出窗口并重新^(R)启动^{(estart )}计算机。

7.对所有 USB 驱动程序重复相同的操作。^(Repeat)

方法 4：回滚 USB 驱动程序^{(Method 4: Roll Back USB Drivers)}

如果USB 设备^{(USB device)}工作正常，但在更新后开始出现故障，则回滚USB 驱动程序^{(USB Drivers)}可能会有所帮助。请按照以下给出的说明进行操作：

1. 导航到Device Manager > Universal Serial Bus controllers ，如方法 3^{(Method 3)}中所述。

2. 右键单击​​ USB 驱动程序^{(USB driver )}（例如Intel(R) USB 3.0 eXtensible Host Controller – 1.0 (Microsoft)）并选择属性^(Properties)，如下图所示。

3. 在USB 设备属性^{(USB Device Properties)}窗口中，切换到驱动程序^{(Driver )}选项卡并选择回滚驱动程序。^{(Roll Back Driver.)}

注意^(Note)：如果您的系统中“回滚驱动程序^{(Roll Back Driver)}”选项显示为灰色，则表示您的系统没有为驱动程序安装任何更新。在这种情况下，请尝试本文中讨论的替代方法。

4. 选择为什么要回滚？^{(Why are you rolling back?)}从给定的列表中，然后单击是^(Yes)确认。

5. 该过程完成后，单击“确定^(OK)”以应用此更改。

6、最后确认提示并重启^(restart)系统，使回滚生效。

另请阅读：^{(Also Read:)} 修复通用串行总线^{(Fix Universal Serial Bus)}( USB )控制器驱动程序问题^{(Controller Driver Issue)}

方法 5：重新安装 USB 驱动程序^{(Method 5: Reinstall USB Drivers)}

如果上述更新或回滚驱动程序的方法都不起作用，那么您可以尝试重新安装您的USB 驱动程序^{(USB driver)}。以下是修复未知 USB 设备^{(Unknown USB Device)}（设备描述符请求^{(Device Descriptor Request)}失败）问题的方法：

1.使用方法 3^{(Method 3)}中提到的步骤，进入Device Manager > 通用串行总线控制器^{(Universal Serial Bus controllers)}。

2. 右键单击​​ Intel(R) USB 3.0 eXtensible Host Controller – 1.0 (Microsoft)并选择Uninstall device，如图所示。

3. 现在，单击卸载^(Uninstall) 并重新启动您的 PC。

4. 现在，从英特尔等制造商网站^{(manufacturer website like Intel)(manufacturer website like Intel)}下载最新的USB 驱动程序^{(USB driver)}。

5. 下载后，安装最新的USB 驱动程序^{(USB driver)}。然后，连接您的USB 设备^{(USB device)}并检查上述错误是否已纠正。

方法 6：禁止 PC 关闭 USB 设备^{(Method 6: Disallow PC to Turn Off USB Device)}

USB省电功能允许集线器驱动程序^{(hub driver)}暂停任何单个USB端口^{(USB port)}而不影响其他端口的功能，以节省电力。此功能虽然有用，但在您的 Windows 10 PC 空闲时仍可能导致未知 USB 设备问题。^{(Unknown USB Device issue)}因此^(Hence)，使用给定的步骤禁用自动USB 挂起功能：^{(USB suspend)}

1. 导航到设备管理器^{(Device Manager)}，如方法 3^{(Method 3)}所示。

2. 在这里，双击Human Interface Devices将其展开。

3. 右键单击​​ USB 输入设备^{(USB Input Device)}并选择属性。^{(Properties.)}

4. 在这里，切换到电源管理^{(Power Management )}选项卡并取消选中标题为允许计算机关闭此设备以节省电源的框。^{(Allow the computer to turn off this device to save power.)}

5. 最后，单击确定^{(OK )}并重新启动^{(restart )}系统。

另请阅读：^{(Also Read:)} 修复 USB 不断断开和重新连接^{(Fix USB Keeps Disconnecting and Reconnecting)}

方法 7：禁用 USB 选择性挂起功能
^{(Method 7: Disable USB Selective Suspend Feature )}

选择性挂起功能也可帮助您在断开^{(suspend feature)}USB 记忆^(USB)棒和其他外围设备时节省电量。您可以通过电源选项^{(Power Options)}轻松禁用USB 选择性挂起功能^{(USB Selective Suspend feature)}，如下所述：

1.在Windows 搜索栏中^{(Windows search bar)}键入 控制^(Control) 面板^(Panel)，然后单击打开^(Open)。

2. 选择View by > Large icons，然后单击电源选项^{(Power Options)}，如图所示。

3. 在这里，单击 您当前选择的计划部分中的^{(plan section)}更改计划设置^{(Change plan settings)}。

4. 在 编辑计划设置 ^{(Edit Plan Settings )}窗口中，选择 更改高级电源设置 ^{(Change advanced power settings )}选项。

5. 现在，双击USB 设置 ^{(USB settings )}将其展开。

6. 再次双击USB 选择性暂停设置^{(USB selective suspend setting)} 将其展开。

7. 在这里，单击 On battery 并从下拉列表中将设置更改为 Disabled  ，如图所示。^(Disabled )

8. 现在，单击 Plugged in 并将设置也更改为Disabled here。

9. 最后，单击 应用^(Apply) > OK 以保存这些更改。重新启动您的 PC 并检查问题是否已解决。

方法八：关闭快速启动^{(Method 8: Turn Off Fast Startup)}

建议关闭快速启动选项^{(startup option)}以修复Windows 10中的^{(Windows 10)}未知 USB 设备^{(Unknown USB Device)}（设备描述符请求^{(Device Descriptor Request)}失败）问题。只需^(Just)，按照给定的步骤操作：

1. 进入Control Panel > Power Options，如方法 7^{(Method 7)}所示。

2.在这里，单击左侧栏中的选择电源按钮的功能^{(Choose what the power buttons do )}选项。

3. 现在，选择更改当前不可用的设置^{(Change settings that are currently unavailable )}选项。

4.接下来，取消选中打开快速启动（推荐）^{(Turn on fast startup (recommended) )}框，然后单击保存更改^{(Save changes)}，如下所示。

5. 最后，重新启动^(restart)您的 Windows PC。

另请阅读：^{(Also Read:)} 修复 USB 设备^{(Fix USB Device)}无法识别的错误代码 43^{(Recognized Error Code 43)}

方法 9：更新 Windows^{(Method 9: Update Windows)}

始终确保您使用更新版本的系统。否则会导致上述问题。

1.在Windows 搜索栏中^{(Windows search bar)}键入检查更新^{(Check for updates)}并单击打开^(Open)。

2. 现在，单击检查更新^{(Check for Updates)}按钮。

3A。按照屏幕上的说明^{(on-screen instructions)}下载并安装可用的最新更新。

3B。如果您的系统已经是最新的，那么它将显示您是最新的^{(You’re up to date )}消息。

4.重新启动^(Restart)系统并检查问题是否已解决。

方法 10：更新 BIOS^{(Method 10: Update BIOS)}

如果上述方法^{(above method)}无法修复Windows 10 台式机/笔记本电脑中的未知 USB 设备问题^{(Unknown USB Device issue)}，则可以尝试更新系统BIOS。阅读我们的详细教程以了解什么是BIOS、如何^(How)检查当前BIOS 版本^{(BIOS version)}以及如何^(How)在此处更新系统 BIOS^{(System BIOS)}。

专业提示：^{(Pro Tip:)}使用给定链接下载适用于联想^(Lenovo)、戴尔^(Dell)和惠普^(HP)笔记本电脑的最新 BIOS 版本。^{(Download Latest BIOS Version)}

推荐的：^{(Recommended:)}

• 修复^(Fix)Windows 10卡^(Stuck)在Windows Ready上的问题^{(Getting Windows Ready)}
• 如何在Windows 10中更改^{(Windows 10)}启动程序^{(Startup Programs)}
• 修复 Windows 10 蓝屏错误
• 如何在 Windows 10 上进入 BIOS

我们希望您能了解如何^{(how to)} 解决 Windows 10 中的未知 USB 设备（设备描述符请求失败）^{(fix Unknown USB Device (Device Descriptor Request Failed) issue in Windows 10)}问题。让我们知道哪种方法对您的帮助最大。另外，如果您有任何疑问或建议，请随时将它们放在评论部分。

Fix Unknown USB Device in Windows 10 (Device Descriptor Request Failed)

You may find that when you сonnect an external USB drive, it doesn’t work on your computer. Instead, you get an error message: The last USB device you connected to this computer malfunctioned, and Windows does not recognize it. This may be because the device incompatible with your system. The USB Device Descriptor is responsible for storing information related to various USB devices connected to it so that Windows operating system may recognize these USB devices in the future. If the USB is not recognized, then the USB device descriptor is not working properly on Windows 10. The unrecognized device in Device Manager will be labeled as Unknown USB Device (Device Descriptor Request Failed) with a yellow triangle with an exclamation mark. The unknown USB device issue may arise due to various reasons. Today, we will help you fix the Unknown USB Device: Device Descriptor Request Failed error in Windows 10 PC.

How to Fix Unknown USB Device (Device Descriptor Request Failed) in Windows 10

You may face these common errors due to an Unknown USB Device issue:

• Device Descriptor Request Failed
• Port Reset Failed
• Set Address Failed

There can be several reasons behind this issue, such as:

• Outdated USB Drivers: If the current drivers in your Windows PC are incompatible or outdated with the system files, then you may face this error.
• Enabled USB Suspend Settings: If you have enabled the USB Suspend settings in your device, then all the USB devices will be suspended from the computer if they are not in active use.
• Outdated Windows OS: In some circumstances, it could be that the Windows operating system running on your device is outdated and thus, conflicting with the device drivers.
• Malfunctioning USB ports: Unclean surroundings might also contribute to the poor performance of your USB drive since the accumulation of dust will not only block the ventilation to the computer but also, cause USB ports to malfunction.
• BIOS is not updated: This too may cause such problems.

A list of methods to fix Unknown USB Device: Device Descriptor Request Failed error in Windows 10 computers has been compiled and arranged according to user convenience. So, keep reading!

Method 1: Basic Troubleshooting

Method 1A: Maintain Clean & Ventilated Ambience

Unclean surroundings and dusty USB ports may cause an Unknown USB Device error in your Windows 10 desktop/laptop. Hence, you should implement the following steps:

1. Clean laptop vents & ports. Use a compressed air cleaner while being extremely careful not to damage anything.

2. Moreover, ensure enough space for proper ventilation of your desktop/laptop, as shown.

Method 1B: Resolve Hardware Issues

Sometimes, a glitch in the USB port or power supply might trigger an unknown USB device Windows 10 error. Hence, you should perform the following checks:

1. If the issue is caused by the power supply, then try re-inserting the USB device after unplugging the laptop from the power supply.

2. Connect another USB device with the same USB port and check if there is an issue with the port.

3. Plug the USB device into a different port to rule out issues with the USB ports.

Method 1C: Restart Windows PC

In most cases, a simple restart might fix Unknown USB Device (Device Descriptor Request Failed) issue.

1. Disconnect the USB device.

2. Restart your Windows PC.

3.  Reconnect the USB device and check if it worked or not.

Method 2: Run Windows Troubleshooter

You should try running the in-built Windows troubleshooter to fix Unknown USB Device (Device Descriptor Request Failed) issue in Windows 10. You can do so in the two ways explained below.

Option 1: Run Hardware and Devices Troubleshooter

1. Press Windows + R keys simultaneously to launch the Run dialog box.

2. Type msdt.exe -id DeviceDiagnostic and click on OK, as shown.

3. Here click on the Advanced option, as highlighted below.

4. Check the box marked Apply repairs automatically and click on Next.

5. Once the process is completed, restart your PC and check if USB is being recognized now.

Option 2: Troubleshoot Malfunctioning USB Device

1. From the Taskbar, right-click on the USB Device icon.

2. Select the Open Devices and Printers option, as shown.

3. Right-click on USB Device (e.g. Cruzer Blade) and select Troubleshoot, as highlighted below.

4. Windows Troubleshooter will automatically detect problems and fix these as well.

Note: If the troubleshooter states that it could not identify the issue, then try the other methods discussed in this article.

Also Read: Fix USB device not recognized by Windows 10

Method 3: Update USB Drivers

To fix Unknown USB Device (Device Descriptor Request Failed) issue in Windows 10, you are advised to update USB drivers, as follows:

1. Type device manager in the Windows search bar and hit Enter key to launch it.

2. Go to the Universal Serial Bus controllers section and expand it with a double-click.

3. Now, right-click on USB driver (e.g. Intel(R) USB 3.0 eXtensible Host Controller – 1.0 (Microsoft)) and select Update driver.

4. Next, click on Search automatically for drivers. 

5A. Your driver will update itself to the latest version.

5B. If your driver is already up-to-date, then you will get the message: The best drivers for your device are already installed.

6. Click on Close to exit the window and Restart the computer.

7. Repeat the same for all USB drivers.

Method 4: Roll Back USB Drivers

If the USB device had been working correctly, but began to malfunction after an update, then rolling back the USB Drivers might help. Follow the given instructions below to do so:

1. Navigate to Device Manager > Universal Serial Bus controllers as explained in Method 3.

2. Right-click on USB driver (e.g. Intel(R) USB 3.0 eXtensible Host Controller – 1.0 (Microsoft)) and select Properties, as depicted below.

3. In the USB Device Properties window, switch to the Driver tab and select Roll Back Driver.

Note: If the option to Roll Back Driver is greyed out in your system, it indicates that your system does not have any updates installed for the driver. In this case, try alternative methods discussed in this article.

4. Select Why are you rolling back? from the given list and click on Yes to confirm.

5. After the process is finished, click on OK to apply this change.

6. Finally, confirm the prompt and restart your system to make the rollback effective.

Also Read: Fix Universal Serial Bus (USB) Controller Driver Issue

Method 5: Reinstall USB Drivers

If the above methods to update or roll back drivers do not work, then you can try to reinstall your USB driver. Here’s how to fix Unknown USB Device (Device Descriptor Request Failed) issue:

1. Go to Device Manager > Universal Serial Bus controllers, using the steps mentioned in Method 3.

2. Right-click on Intel(R) USB 3.0 eXtensible Host Controller – 1.0 (Microsoft) and select Uninstall device, as shown.

3. Now, click on Uninstall and restart your PC.

4. Now, download the latest USB driver from manufacturer website like Intel.

5. Once downloaded, install the latest USB driver. Then, connect your USB device and check if the said error is rectified.

Method 6: Disallow PC to Turn Off USB Device

The USB power-saving feature allows the hub driver to suspend any individual USB port without affecting the function of other ports, in order to save power. This feature, however useful, may still cause Unknown USB Device issue when your Windows 10 PC is idle. Hence, disable the automatic USB suspend feature using the given steps:

1. Navigate to the Device Manager as shown in Method 3.

2. Here, double-click on Human Interface Devices to expand it.

3. Right-click on the USB Input Device and select Properties.

4. Here, switch to the Power Management tab and uncheck the box titled Allow the computer to turn off this device to save power.

5. Finally, click on OK and restart your system.

Also Read: Fix USB Keeps Disconnecting and Reconnecting

Method 7: Disable USB Selective Suspend Feature

The selective suspend feature too, helps you to conserve power while disconnecting USB sticks and other peripherals. You can easily disable the USB Selective Suspend feature via Power Options, as explained below:

1. Type Control Panel in the Windows search bar and click Open.

2. Select View by > Large icons, and then click Power Options, as shown.

3. Here, click on Change plan settings in your currently selected plan section.

4. In the Edit Plan Settings window, select Change advanced power settings option.

5. Now, double-click USB settings to expand it.

6. Once again, double-click USB selective suspend setting to expand it.

7. Here, click on On battery and change the setting to Disabled from the drop-down list, as illustrated.

8. Now, click on Plugged in and change the setting to Disabled here as well.

9. Finally, click on Apply > OK to save these changes. Restart your PC and check if the issue is solved now.

Method 8: Turn Off Fast Startup

Turning off the fast startup option is recommended to fix Unknown USB Device (Device Descriptor Request Failed) issue in Windows 10. Just, follow the given steps:

1. Go to the Control Panel > Power Options as illustrated in Method 7.

2. Here, click on Choose what the power buttons do option in the left bar.

3. Now, select the Change settings that are currently unavailable option.

4. Next, uncheck the box Turn on fast startup (recommended) and then click on Save changes as shown below.

5. Finally, restart your Windows PC.

Also Read: Fix USB Device not Recognized Error Code 43

Method 9: Update Windows

Always ensure that you use your system in its updated version. Otherwise, it will cause the said problem.

1. Type Check for updates in the Windows search bar and click Open.

2. Now, click on the Check for Updates button.

3A. Follow the on-screen instructions to download and install the latest update available.

3B. If your system is already up-to-date, then it will show You’re up to date message.

4. Restart your system and check if the issue is resolved now.

Method 10: Update BIOS

If the above method could not fix Unknown USB Device issue in your Windows 10 desktop/laptop, then you can try updating system BIOS. Read our elaborate tutorial to understand What is BIOS, How to check the current BIOS version, and How to update System BIOS here.

Pro Tip: Use the given links to Download Latest BIOS Version for Lenovo, Dell & HP laptops.

Recommended:

• Fix Windows 10 Stuck on Getting Windows Ready
• How to Change Startup Programs in Windows 10
• Fix Windows 10 Blue Screen Error
• How to Enter BIOS on Windows 10

We hope that you could learn how to fix Unknown USB Device (Device Descriptor Request Failed) issue in Windows 10 problem. Let us know which method helped you the best. Also, if you have any queries or suggestions, then feel free to drop them in the comments section.

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