---
title: SetAlternateInterface
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.14+]
path: iokit/iousbinterfaceinterface942/2977244-setalternateinterface
---

# SetAlternateInterface

## Declaration

```occ
IOReturn (*SetAlternateInterface)(void *self, UInt8 alternateSetting);
```