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If you receive Unknown USB Device (Device Descriptor Request Failed) error in Device Manager, and your external USB device is not recognized by Windows 10, try this fix.
General Suggestions
- Connect the USB device to a different USB port: This will check if the issue is caused by a broken port.
- Try connecting your USB device to another computer: This will check if the external device has problem.
- If you have mixed 2.0 and 3.0 USB ports, or are using a USB hub, just try plugging your USB device directly into the 3.0 port and check if it works.
Fix 1 - Change the USB Selective Suspend Settings
Fix 2 - Disable Fast Startup
Fix 3 - Reinstall Unknown USB Device Driver
Fix 4 - Update USB Device’s Drivers
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Code 43 error