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# IOUSBSuperSpeedEndpointCompanionDescriptor

The descriptor for a SuperSpeed USB Endpoint Companion.

```
struct IOUSBSuperSpeedEndpointCompanionDescriptor;
```

## Overview

For more information about this descriptor type, see section 9.6.7 of the USB 3.1 specification at <http://www.usb.org>.

## Topics

### Accessing the Descriptor Properties

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

The length of this descriptor in bytes.

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

The type of the descriptor.

[`uint8_t bMaxBurst;`](/documentation/USBDriverKit/IOUSBSuperSpeedEndpointCompanionDescriptor/bMaxBurst)

The maximum number of packets the endpoint can send or receive in one burst.

[`uint8_t bmAttributes;`](/documentation/USBDriverKit/IOUSBSuperSpeedEndpointCompanionDescriptor/bmAttributes)

The attributes associated with the endpoint.

[`uint16_t wBytesPerInterval;`](/documentation/USBDriverKit/IOUSBSuperSpeedEndpointCompanionDescriptor/wBytesPerInterval)

The total number of bytes this endpoint transfers during each service interval.


---

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