---
title: kIOAudioInputPortSubTypeCD
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1646418-anonymous/kioaudioinputportsubtypecd
---

# kIOAudioInputPortSubTypeCD

## Declaration

```occ
kIOAudioInputPortSubTypeCD = 'cd  '
```