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Apple Developer Docs

USBDriverKit / tIOUSBTopology

Contents

Declaration
Topics

tIOUSBTopology

Declaration

enum tIOUSBTopology : unsigned int;

Topics

Enumeration Cases

kIOUSBTopology1Hub
kIOUSBTopology2Hub
kIOUSBTopology3Hub
kIOUSBTopology4Hub
kIOUSBTopology5Hub
kIOUSBTopologyHost
kIOUSBTopologyRootPort
kIOUSBTopologyTierLimit

Open on developer.apple.com

USBDriverKitEnumeration

driverkit 19.0+

Declaration
Topics

Built on 2026-11-01 · Snapshot snapshot-20261101 (macOS 27.0.1) · Commit 864a336 · by @g-cqd · based on Apple Developer Documentation