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  "identifier" : "/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard",
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  "title" : "IOUSBDeviceCapabilityBillboard"
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# IOUSBDeviceCapabilityBillboard

The structure for the billboard device capability.

```
struct IOUSBDeviceCapabilityBillboard;
```

## Overview

For more information about this descriptor type, see section 6.2 of the USB 3.1 specification at <http://www.usb.org>.

## Topics

### Accessing the Descriptor Properties

[`uint8_t bLength;`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/bLength)

[`uint8_t bDescriptorType;`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/bDescriptorType)

[`uint8_t bDevCapabilityType;`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/bDevCapabilityType)

[`uint8_t iAdditionalInfoURL;`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/iAdditionalInfoURL)

[`uint8_t bNumberOfAlternateModes;`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/bNumberOfAlternateModes)

[`uint8_t bPreferredAlternateMode;`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/bPreferredAlternateMode)

[`uint16_t vCONNPower;`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/vCONNPower)

[`uint8_t bmConfigured[32];`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/bmConfigured)

[`uint16_t bcdVersion;`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/bcdVersion)

[`uint8_t bAdditionalFailureInfo;`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/bAdditionalFailureInfo)

[`uint8_t bReserved;`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/bReserved)

[`IOUSBDeviceCapabilityBillboardAltConfig pAltConfigurations[];`](/documentation/USBDriverKit/IOUSBDeviceCapabilityBillboard/pAltConfigurations)


---

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