---
title: interfaceSubClass
framework: accessoryaccess
role: symbol
role_heading: Instance Property
path: accessoryaccess/aausbaccessorymatchingcriteria/interfacematchingcriteria/interfacesubclass
---

# interfaceSubClass

The value that represents the interface subclass.

## Declaration

```swift
var interfaceSubClass: Int?
```

## See Also

### Interface characteristics

- [bcdDevice](accessoryaccess/aausbaccessorymatchingcriteria/interfacematchingcriteria/bcddevice.md)
- [configurationValue](accessoryaccess/aausbaccessorymatchingcriteria/interfacematchingcriteria/configurationvalue.md)
- [interfaceClass](accessoryaccess/aausbaccessorymatchingcriteria/interfacematchingcriteria/interfaceclass.md)
- [interfaceNumber](accessoryaccess/aausbaccessorymatchingcriteria/interfacematchingcriteria/interfacenumber.md)
- [interfaceProtocol](accessoryaccess/aausbaccessorymatchingcriteria/interfacematchingcriteria/interfaceprotocol.md)
- [productID](accessoryaccess/aausbaccessorymatchingcriteria/interfacematchingcriteria/productid.md)
- [speed](accessoryaccess/aausbaccessorymatchingcriteria/interfacematchingcriteria/speed.md)
- [vendorID](accessoryaccess/aausbaccessorymatchingcriteria/interfacematchingcriteria/vendorid.md)