---
title: IOUSBConfigurationDescHeader
framework: IOKit
role: symbol
role_heading: Structure
platforms: [Mac Catalyst 13.0+, macOS 10.1+]
path: iokit/iousbconfigurationdescheader
---

# IOUSBConfigurationDescHeader

## Declaration

```occ
typedef struct IOUSBConfigurationDescHeader {
    ...
} IOUSBConfigurationDescHeader;
```

## Overview

Overview Header of a IOUSBConfigurationDescriptor. Used to get the total length of the descriptor.

## Topics

### Instance Properties

- [bDescriptorType](iokit/iousbconfigurationdescheader/1425745-bdescriptortype.md)
- [bLength](iokit/iousbconfigurationdescheader/1426171-blength.md)
- [wTotalLength](iokit/iousbconfigurationdescheader/1425499-wtotallength.md)

## See Also

### Related Documentation

- [IOUSBConfigurationDescHeader](iokit/usb_h_user-space/iousbconfigurationdescheader.md)