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. So first, follow below simple instructions to do the troubleshooting. 1. Try the device on a different USB port. This will figure out if problem is caused by a broken port. 2. Connect the device to another PC. This will figure out if the external device has problem. If there is no problem with the USB port and the device, read on and try the following methods. You can start at the top of the list and work your way down. Method 1: Remove the Power Supply Method 2: Uninstall the USB Driver in Device Manager Method 3 : Update the USB Driver Method 4: Disable Fast Startup Method 5: Change the USB Selective Suspend Settings you can do it automatically with Driver Easy. Driver Easy will automatically recognize your system and find the correct drivers for it. You don’t need to know exactly what system your computer is running, you don’t need to risk downloading and installing the wrong driver, and you don’t need to worry about making a mistake when installing. You can update your drivers automatically with either the FREE or the Pro version of Driver Easy. But with the Pro version it takes just 2 clicks (and you get full support and a 30-day money back guarantee): 1. Download and install Driver Easy. 2. Run Driver Easy and click Scan Now button. Driver Easy will then scan your computer and detect any problem drivers.
3. Click the Update button next to a flagged USB driver to automatically download and install the correct version of this driver (you can do this with the FREE version). Or click Update All to automatically download and install the correct version of all the drivers that are missing or out of date on your system (this requires the Pro version – you’ll be prompted to upgrade when you click Update All).
2. Click Change settings that are currently unavailable.
3. Select High performance and click on Change plan settings.
4. Click on Change advanced power settings.
5. Click on Change settings that are currently unavailable.
6. Locate USB settings and expand it. 7. Expand USB selective suspend setting. Disable both On battery and Plugged in settings.
8. Click Apply button and restart your computer. After using methods in this post, you must resolve the Device Descriptor Request Failed error for Windows 10.
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