---
title: transportType
framework: Core Audio
role: symbol
role_heading: Instance Property
platforms: [macOS 15.0+]
path: coreaudio/audiohardwareclock/transporttype
---

# transportType

A UInt32 whose value indicates how the object is connected to the CPU. Constants for some of the values for this property can be found in the enum in the AudioDevice Constants section of AudioHardwareBase.h.

## Declaration

```swift
var transportType: UInt32 { get throws }
```