---
title: tIOUSBDeviceRequestDirectionValue
framework: IOKit
role: symbol
role_heading: Enumeration
platforms: [Mac Catalyst 13.0+, macOS 10.15+]
path: iokit/tiousbdevicerequestdirectionvalue
---

# tIOUSBDeviceRequestDirectionValue

## Declaration

```occ
typedef enum tIOUSBDeviceRequestDirectionValue : unsigned int {
    ...
} tIOUSBDeviceRequestDirectionValue;
```

## Topics

### Constants

- [kIOUSBDeviceRequestDirectionValueIn](iokit/tiousbdevicerequestdirectionvalue/kiousbdevicerequestdirectionvaluein.md)
- [kIOUSBDeviceRequestDirectionValueOut](iokit/tiousbdevicerequestdirectionvalue/kiousbdevicerequestdirectionvalueout.md)