Usb\class_ff&subclass_ff&prot_ff

| Subclass | Protocol | Description | | --- | --- | --- | | 01 (Audio Control) | 00 (None) | Audio control device | | 02 (Audio Streaming) | 00 (None) | Audio streaming device |

The USB (Universal Serial Bus) standard defines a hierarchical structure for device classification, which includes: usb\class_ff&subclass_ff&prot_ff

#include <stdint.h>

The device is a HID device (Class 03) with a boot interface subclass (Subclass 01) and uses the keyboard protocol (Protocol 01). | Subclass | Protocol | Description | |