---
title: kIOUSBDescriptorSizeUSB20ExtensionCapability
framework: kernel
role: symbol
role_heading: Enumeration Case
path: kernel/tiousbdescriptorsize/kiousbdescriptorsizeusb20extensioncapability
---

# kIOUSBDescriptorSizeUSB20ExtensionCapability

## Declaration

```occ
kIOUSBDescriptorSizeUSB20ExtensionCapability = 7
```