---
title: IOUSBHostErrorDomain
framework: IOUSBHost
role: symbol
role_heading: Global Variable
platforms: [Mac Catalyst 14.0+, macOS 10.15+]
path: iousbhost/iousbhosterrordomain
---

# IOUSBHostErrorDomain

The error domain for the framework.

## Declaration

```swift
let IOUSBHostErrorDomain: String
```