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

# kIOHIDSerialNumberKey

A key that specifies the device's serial number.

## Declaration

```occ
#define kIOHIDSerialNumberKey
```

## Discussion

The value of this key is a string that contains the serial number of the device.

## See Also

### Manufacturer Keys

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