![]() rrrr is a 4-digit hexadecimal number that contains the revision number of the device.pppp is a 4-digit hexadecimal number that identifies the product.vvvv is a 4-digit hexadecimal number that identifies the vendor.The registry entries described in this topic are found under this key: HKEY_LOCAL_MACHINE Registry settings for configuring USB driver stack behavior HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB Under the device instance key, note the device class, subclass, and protocol codes: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\\\Device Parameters HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceClasses\įind the device instance registry key and get the device interface GUID: ![]() ![]() View the device interface GUID, Hardware Id, and device class information about your deviceįind this registry key and note the DeviceInstance value: Find device information after it enumerates on Windows This topic describes the device-specific registry entries.
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