---
title: kIOMaximumSwapWriteKey
framework: IOKit
role: symbol
role_heading: Global Variable
platforms: [iOS 16.0+, iPadOS 16.0+, Mac Catalyst 13.0+, macOS 10.14+, visionOS 1.0+]
path: iokit/kiomaximumswapwritekey
---

# kIOMaximumSwapWriteKey

## Declaration

```swift
var kIOMaximumSwapWriteKey: String { get }
```