---
title: "StandardUSB::getUSB20ExtensionDeviceCapabilityDescriptor"
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 12.0+]
path: kernel/3794181-standardusb
---

# StandardUSB::getUSB20ExtensionDeviceCapabilityDescriptor

## Declaration

```occ
const USB20ExtensionCapabilityDescriptor * StandardUSB::getUSB20ExtensionDeviceCapabilityDescriptor(const BOSDescriptor *bosDescriptor);
```