Usb\class_00&subclass_00 Link

If you see this ID in the Windows Device Manager under "Other Devices" or with a yellow exclamation mark, it usually means Windows has detected the hardware but cannot find a specific driver to match its sub-functions. Common scenarios include: Defined Class Codes | USB-IF

// Example: find devices with class 00, subclass 00 GUID guid = GUID_DEVCLASS_UNKNOWN; // or use GUID_DEVINTERFACE_USB_DEVICE HDEVINFO devInfo = SetupDiGetClassDevs(NULL, "USB", NULL, DIGCF_PRESENT | DIGCF_ALLCLASSES); usb\class_00&subclass_00

; Match USB device with class 00, subclass 00 [Manufacturer] %MfgName%=MyDevice, NTamd64 If you see this ID in the Windows

Indicates that class information is deferred to the interface level. When this value is (Class 00), it signals

In the USB specification, the bDeviceClass field of a device descriptor tells the host computer what type of device it is dealing with. When this value is (Class 00), it signals that the device is not limited to a single predefined class at the top level.

Devices with a class code of 00 and a subclass code of 00 are often referred to as "vendor-specific" devices, as they require custom handling by the host computer.