---
title: bDirection
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.8+]
path: iokit/iousbendpointproperties/1425747-bdirection
---

# bDirection

Used as an input for GetEndpointPropertiesV3. Used as an output for GetPipePropertiesV3. One of kUSBIn or kUSBOut.

## Declaration

```occ
UInt8 bDirection;
```