USB class 0x01 — Audio
Class code 0x01 marks a device or interface as Audio. Operating systems read this value from the descriptor and bind a generic class driver, which is why most audio hardware works without a vendor driver even when the VID:PID pair is unrecognised.
How it appears on your system
$ lsusb -v
bInterfaceClass 1 AudioWindows exposes the same value in the compatible IDs list as USB\Class_01, extended with &SubClass_xx&Prot_xx for the subclass and protocol below.
Subclass and protocol codes
| Subclass | Protocol | Meaning |
|---|---|---|
| 01 | — | Control Device |
| 02 | — | Streaming |
| 03 | — | MIDI Streaming |
Looking up a specific device instead? Search by VID:PID or browse the vendor directory.