---
title: kIOUSBDescriptorSizeDevice
framework: IOKit
role: symbol
role_heading: Enumeration Case
platforms: [Mac Catalyst 13.0+, macOS 10.15+]
path: iokit/tiousbdescriptorsize/kiousbdescriptorsizedevice
---

# kIOUSBDescriptorSizeDevice

## Declaration

```occ
kIOUSBDescriptorSizeDevice = 18
```