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# AAUSBAccessoryMatchingCriteria.DeviceMatchingCriteria

A structure you provide that enumerates which device characteristics to search for.

```
struct DeviceMatchingCriteria
```

## Topics

### Creating a device characteristics structure

[`init(vendorID:productID:deviceClass:deviceSubClass:deviceProtocol:speed:)`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/DeviceMatchingCriteria/init(vendorID:productID:deviceClass:deviceSubClass:deviceProtocol:speed:))

Initializes a new device matching criteria structure with the provided values.

### Device characteristics

[`deviceClass`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/DeviceMatchingCriteria/deviceClass)

The value that represents the device class.

[`deviceProtocol`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/DeviceMatchingCriteria/deviceProtocol)

The value that represents the device protocol.

[`deviceSubClass`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/DeviceMatchingCriteria/deviceSubClass)

The value that represents the device subclass.

[`productID`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/DeviceMatchingCriteria/productID)

The value that represents the product ID.

[`speed`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/DeviceMatchingCriteria/speed)

The value that represents the device speed.

[`vendorID`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/DeviceMatchingCriteria/vendorID)

The value that represents the vendor ID.


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