---
title: kIOMainPortDefault
framework: IOKit
role: symbol
role_heading: Global Variable
platforms: [iOS 15.0+, iPadOS 15.0+, Mac Catalyst 15.0+, macOS 12.0+, visionOS 1.0+]
path: iokit/kiomainportdefault
---

# kIOMainPortDefault

## Declaration

```swift
let kIOMainPortDefault: mach_port_t
```