---
title: kIOHIDTransportKey
framework: IOKit
role: symbol
role_heading: Macro
platforms: [Mac Catalyst 13.0+, macOS 10.0+]
path: iokit/kiohidtransportkey
---

# kIOHIDTransportKey

A key for specifying the transport mechanism of the device.

## Declaration

```occ
#define kIOHIDTransportKey
```

## Discussion

Keys that represent properties of a particular device. Can be added to your matching dictionary when refining searches for HID devices.

## See Also

### Manufacturer Keys

- [kIOHIDVendorIDKey](kiohidvendoridkey.md)
- [kIOHIDProductIDKey](kiohidproductidkey.md)
- [kIOHIDVersionNumberKey](kiohidversionnumberkey.md)
- [kIOHIDManufacturerKey](kiohidmanufacturerkey.md)
- [kIOHIDProductKey](kiohidproductkey.md)
- [kIOHIDSerialNumberKey](kiohidserialnumberkey.md)