---
title: interfaceSubClass
framework: iousbhost
role: symbol
role_heading: Type Property
path: iousbhost/iousbhostmatchingpropertykey/interfacesubclass
---

# interfaceSubClass

The matching property for the interface’s subclass ID.

## Declaration

```swift
static let interfaceSubClass: IOUSBHostMatchingPropertyKey
```

## See Also

### Interface Properties

- [interfaceNumber](iousbhost/iousbhostmatchingpropertykey/interfacenumber.md)
- [interfaceClass](iousbhost/iousbhostmatchingpropertykey/interfaceclass.md)
- [interfaceProtocol](iousbhost/iousbhostmatchingpropertykey/interfaceprotocol.md)