---
title: kUSBInformationDeviceIsRootHubMask
framework: kernel
role: symbol
role_heading: Enumeration Case
path: kernel/usbdeviceinformationbits/kusbinformationdeviceisroothubmask
---

# kUSBInformationDeviceIsRootHubMask

The mask indicating that the USB device is a root hub.

## Declaration

```occ
kUSBInformationDeviceIsRootHubMask = (1 << kUSBInformationDeviceIsRootHub)
```