---
title: bAlternateSetting
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.0+]
path: iokit/iousbfindinterfacerequest/1425998-balternatesetting
---

# bAlternateSetting

## Declaration

```occ
UInt16 bAlternateSetting;
```