---
title: kIOAudioDeviceTransportTypeBuiltIn
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1646408-anonymous/kioaudiodevicetransporttypebuiltin
---

# kIOAudioDeviceTransportTypeBuiltIn

## Declaration

```occ
kIOAudioDeviceTransportTypeBuiltIn = 'bltn'
```