---
title: Parsing USB Descriptors
framework: iousbhost
role: collectionGroup
role_heading: API Collection
path: iousbhost/parsing-usb-descriptors
---

# Parsing USB Descriptors

Extract information from various USB descriptors using helper methods.

## Topics

### Configuration Descriptor Parsing

- [IOUSBGetNextDescriptor(_:_:)](iousbhost/iousbgetnextdescriptor(_:_:).md)
- [IOUSBGetNextDescriptorWithType(_:_:_:)](iousbhost/iousbgetnextdescriptorwithtype(_:_:_:).md)
- [IOUSBGetNextAssociatedDescriptor(_:_:_:)](iousbhost/iousbgetnextassociateddescriptor(_:_:_:).md)
- [IOUSBGetNextAssociatedDescriptorWithType(_:_:_:_:)](iousbhost/iousbgetnextassociateddescriptorwithtype(_:_:_:_:).md)
- [IOUSBGetNextInterfaceAssociationDescriptor(_:_:)](iousbhost/iousbgetnextinterfaceassociationdescriptor(_:_:).md)
- [IOUSBGetNextInterfaceDescriptor(_:_:)](iousbhost/iousbgetnextinterfacedescriptor(_:_:).md)
- [IOUSBGetConfigurationMaxPowerMilliAmps(_:_:)](iousbhost/iousbgetconfigurationmaxpowermilliamps(_:_:).md)

### BOS Descriptor Parsing

- [IOUSBGetUSB20ExtensionDeviceCapabilityDescriptor(_:)](iousbhost/iousbgetusb20extensiondevicecapabilitydescriptor(_:).md)
- [IOUSBGetNextCapabilityDescriptorWithType(_:_:_:)](iousbhost/iousbgetnextcapabilitydescriptorwithtype(_:_:_:).md)
- [IOUSBGetNextCapabilityDescriptor(_:_:)](iousbhost/iousbgetnextcapabilitydescriptor(_:_:).md)
- [IOUSBGetSuperSpeedDeviceCapabilityDescriptor(_:)](iousbhost/iousbgetsuperspeeddevicecapabilitydescriptor(_:).md)
- [IOUSBGetContainerIDDescriptor(_:)](iousbhost/iousbgetcontaineriddescriptor(_:).md)
- [IOUSBGetBillboardDescriptor(_:)](iousbhost/iousbgetbillboarddescriptor(_:).md)

### Endpoint Descriptor Parsing

- [IOUSBGetNextEndpointDescriptor(_:_:_:)](iousbhost/iousbgetnextendpointdescriptor(_:_:_:).md)
- [IOUSBGetEndpointDirection(_:)](iousbhost/iousbgetendpointdirection(_:).md)
- [IOUSBGetEndpointAddress(_:)](iousbhost/iousbgetendpointaddress(_:).md)
- [IOUSBGetEndpointNumber(_:)](iousbhost/iousbgetendpointnumber(_:).md)
- [IOUSBGetEndpointType(_:)](iousbhost/iousbgetendpointtype(_:).md)
- [IOUSBGetEndpointMaxPacketSize(_:_:)](iousbhost/iousbgetendpointmaxpacketsize(_:_:).md)
- [IOUSBGetEndpointIntervalEncodedMicroframes(_:_:)](iousbhost/iousbgetendpointintervalencodedmicroframes(_:_:).md)
- [IOUSBGetEndpointIntervalMicroframes(_:_:)](iousbhost/iousbgetendpointintervalmicroframes(_:_:).md)
- [IOUSBGetEndpointIntervalFrames(_:_:)](iousbhost/iousbgetendpointintervalframes(_:_:).md)
- [IOUSBGetEndpointMaxStreamsEncoded(_:_:_:)](iousbhost/iousbgetendpointmaxstreamsencoded(_:_:_:).md)
- [IOUSBGetEndpointMaxStreams(_:_:_:)](iousbhost/iousbgetendpointmaxstreams(_:_:_:).md)

## See Also

### Retrieving Base Class Descriptors