Usb\class_00&subclass_00 Jun 2026

The string is a hardware identification string used by Windows to categorize a USB device when its specific function is not defined at the device level. Understanding the Codes

Further confirms that no specific device-level protocol is being followed. usb\class_00&subclass_00

The USB class codes are defined as follows: The string is a hardware identification string used

If you see this string in your Device Manager, it often appears under "Unknown Device" or as a "USB Composite Device". This happens for several reasons: USB device classes - IAmAProgrammer - 博客园 usb\class_00&subclass_00