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# IOUSBHostInterfacePropertyKey

Properties of a USB interface that describe its state.

```
struct IOUSBHostInterfacePropertyKey
```

## Topics

### Properties

[`alternateSetting`](/documentation/IOUSBHost/IOUSBHostInterfacePropertyKey/alternateSetting)

The USB interface’s current alternative setting value.

### Initializing the Structure

[`init(rawValue:)`](/documentation/IOUSBHost/IOUSBHostInterfacePropertyKey/init(rawValue:))

Creates the structure.


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