Appendix D. USB Messaging System Messages
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## Appendix D. USB Messaging System Messages

The USB Chapter 5 has several messages, these are divided into message classes. Each class is presented here as a separate section with the messages for that class presented in each sub-section. The list of messages presented here may not always be completely up to date and the reader is encouraged to check the Section 4.6 header.

Table D.1. Message Classes

Value | Class
--- | ---
0 | hub
1 | powercap (power capacity)
2 | new device
3 | configuration change
4 | claim interface
5 | pipe exclusive claim
6 | capacity check / claim
7 | controller message
8 | log control message

## D.1. Hub Message Class

## D.2. Power Capacity Class

## D.3. New Device Class

## D.4. Configuration Class

## D.5. Claim Interface Class

## D.6. Pipe Class

## D.7. Capacity Class

## D.8. Controller Message Class

## D.9. Log control Class

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