BOS Descriptor Device Capability Type Codes
The BOS descriptor defines a root descriptor that is similar to the configuration descriptor, and is the base descriptor for accessing a family of related descriptors. The following table describes the values used for these device capabilites. Details for the associated BOS descriptor can be found in the referenced Specification
Contact admin@usb.org to reserve a new BOS descriptor device capability value.
Value | Description | Reference |
---|---|---|
0H | Reserved | |
01H | Defines the set of Wireless USB-specific device level capabilities | Wireless USB Specification, Revision 1.1 - specification no longer available |
02H | USB 2.0 Extension Descriptor | USB 3.2 Specification |
03H | Defines the set of SuperSpeed USB specific device level capabilities | USB 3.2 Specification |
04H | Defines the instance unique ID used to identify the instance across all operating modes | USB 3.2 Specification |
05H | Defines a device capability specific to a particular platform/operating system | USB 3.2 Specification |
06H | Defines the various PD Capabilities of this device | USB PD Specification; soon to be deprecated |
07H | Provides information on each battery supported by the device | USB PD Specification |
08H | The consumer characteristics of a port on the device | USB PD Specification |
09H | The provider characteristics of a port on the device | USB PD Specification |
0AH | Defines the set of SuperSpeed Plus USB specific device level capabilities | USB 3.2 Specification |
0BH | Precision Time Measurement (PTM) Capability Descriptor | USB 3.2 Specification |
0CH | Defines the set of Wireless USB 1.1-specific device level capabilities | Wireless USB Specification, Revision 1.1 - specification no longer available |
0Dh | Billboard capability | USB 3.2 Specification |
0EH | Authentication Capability Descriptor | USB 3.2 Specification |
0Fh | Billboard Ex capability | USB 3.2 Specification |
10h | Configuration Summary | USB 3.2 Specification |
11h | Firmware Status | USB 3.2 Specification |
12h | TBD | reserved for USB Audio 4.0 |
13h | USB 3 Gen T Capability | USB4 Version 2 Specification |
14h | TBD | reserved for USB PD |
15-FFH | not yet assigned |