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

# kIOUSBDescriptorSizeStringMaximum

## Declaration

```occ
kIOUSBDescriptorSizeStringMaximum = 255
```