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  1. Windows cannot recognize USB device? Receive ‘USB isn’t recognized’ or ‘USB Device Descriptor Failed’ error message on your PC while connecting USB? Here in this article, 3 effective methods are available here to help you fix ‘USB Device_Descriptor_Failure’ error now.
  2. How to Free Download, Install or Update USB Driver on Your Laptop or Desktop. 22, 2018 / Updated by Bessie Shaw to Windows Driver Solutions.
  3. You will see an Unknown USB device ( Device Descriptor Request Failed). Right-, Click on ‘Generic USB Hub‘ and select ‘Update Driver Software.

Unknown device usb device_descriptor_failure. Wait for it to automatically install the drivers. Download apps folder. Fix USB Device Not Recognized. Device Descriptor Request Failed. USB DEVICE_DESCRIPTOR_FAILURE; The first thing I did was check my USB drivers.

The USB_DEVICE_DESCRIPTOR structure is used by USB client drivers to retrieve a USB-defined device descriptor.The members of this structure are described in the Universal Serial Bus 3.1 Specification available at USB Document Library. See section 9.6.1.

Syntax

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Members

bLength

Specifies the length, in bytes, of this descriptor.

bDescriptorType

Specifies the descriptor type. Must be set to USB_DEVICE_DESCRIPTOR_TYPE.

bcdUSB

Identifies the version of the USB specification that this descriptor structure complies with. This value is a binary-coded decimal number.

bDeviceClass

Specifies the class code of the device as assigned by the USB specification group.

bDeviceSubClass

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Specifies the subclass code of the device as assigned by the USB specification group.

bDeviceProtocol

Specifies the protocol code of the device as assigned by the USB specification group.

bMaxPacketSize0

Specifies the maximum packet size, in bytes, for endpoint zero of the device. The value must be set to 8, 16, 32, or 64.

idVendor

Specifies the vendor identifier for the device as assigned by the USB specification committee.

idProduct

Specifies the product identifier. This value is assigned by the manufacturer and is device-specific.

/patch-fr-teamspeak-3-download/. bcdDevice

Identifies the version of the device. This value is a binary-coded decimal number.

iManufacturer

Specifies a device-defined index of the string descriptor that provides a string containing the name of the manufacturer of this device.

iProduct

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Specifies a device-defined index of the string descriptor that provides a string that contains a description of the device.

iSerialNumber

Specifies a device-defined index of the string descriptor that provides a string that contains a manufacturer-determined serial number for the device.

bNumConfigurations

Specifies the total number of possible configurations for the device.

Remarks

This structure is used to hold a retrieved USB-defined device descriptor. This information can then be used to further configure or retrieve information about the device. Device descriptors are retrieved by submitting a get-descriptor URB.

The iManufacturer, iProduct, and iSerialNumber values, when returned from the host controller driver, contain index values into an array of string descriptors maintained by the device. To retrieve these strings, a string descriptor request can be sent to the device using these index values.

Requirements

Headerusbspec.h (include Usb100.h)

See Also