---
title: uuid
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avexternalsyncdevice/uuid
---

# uuid

A unique identifier for an external sync device.

## Declaration

```swift
var uuid: UUID { get }
```

## Discussion

Discussion Use this property to select a specific external sync device.

## See Also

### Inspecting a device

- [clock](avfoundation/avexternalsyncdevice/clock.md)
- [productID](avfoundation/avexternalsyncdevice/productid.md)
- [signalCompensationDelay](avfoundation/avexternalsyncdevice/signalcompensationdelay.md)
- [status](avfoundation/avexternalsyncdevice/status.md)
- [vendorID](avfoundation/avexternalsyncdevice/vendorid.md)