---
title: "StandardUSB::USB20ExtensionCapabilityDescriptor"
framework: Kernel
role: symbol
role_heading: Structure
platforms: [macOS 12.0+]
path: kernel/standardusb_usb20extensioncapabilitydescriptor
---

# StandardUSB::USB20ExtensionCapabilityDescriptor

## Declaration

```occ
typedef struct StandardUSB::USB20ExtensionCapabilityDescriptor {
    ...
} StandardUSB::USB20ExtensionCapabilityDescriptor;
```

## Topics

### Instance Properties

- [bmAttributes](kernel/standardusb_usb20extensioncapabilitydescriptor/3794152-bmattributes.md)