---
title: Probe
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.0+]
path: iokit/iocfplugininterfacestruct/1412435-probe
---

# Probe

## Declaration

```swift
var Probe: ((UnsafeMutableRawPointer?, CFDictionary?, io_service_t, UnsafeMutablePointer<Int32>?) -> IOReturn)!
```