---
title: kUSBInformationDeviceIsOnThunderbolt
framework: IOKit
role: pseudoSymbol
platforms: []
path: iokit/usbdeviceinformationbits/kusbinformationdeviceisonthunderbolt
---

# kUSBInformationDeviceIsOnThunderbolt

The USB device is downstream of a controller that attaches through a Thunderbolt port.