---
title: Endpoint Descriptor bits
framework: IOKit
role: containerSymbol
role_heading: Enumeration
platforms: [Mac Catalyst 18.4+, macOS 10.4+]
path: iokit/1424773-endpoint_descriptor_bits
---

# Endpoint Descriptor bits

## Declaration

```occ
enum : unsigned int {
    ...
};
```

## Topics

### Constants

- [kUSBAdaptiveIsocSyncType](1424773-endpoint_descriptor_bits/kusbadaptiveisocsynctype.md)
- [kUSBAsynchronousIsocSyncType](1424773-endpoint_descriptor_bits/kusbasynchronousisocsynctype.md)
- [kUSBDataIsocUsageType](1424773-endpoint_descriptor_bits/kusbdataisocusagetype.md)
- [kUSBEndpointDirectionIn](1424773-endpoint_descriptor_bits/kusbendpointdirectionin.md)
- [kUSBEndpointDirectionOut](1424773-endpoint_descriptor_bits/kusbendpointdirectionout.md)
- [kUSBEndpointbmAttributesSynchronizationTypeMask](1424773-endpoint_descriptor_bits/kusbendpointbmattributessynchronizationtypemask.md)
- [kUSBEndpointbmAttributesSynchronizationTypeShift](1424773-endpoint_descriptor_bits/kusbendpointbmattributessynchronizationtypeshift.md)
- [kUSBEndpointbmAttributesTransferTypeMask](1424773-endpoint_descriptor_bits/kusbendpointbmattributestransfertypemask.md)
- [kUSBEndpointbmAttributesUsageTypeMask](1424773-endpoint_descriptor_bits/kusbendpointbmattributesusagetypemask.md)
- [kUSBEndpointbmAttributesUsageTypeShift](1424773-endpoint_descriptor_bits/kusbendpointbmattributesusagetypeshift.md)
- [kUSBFeedbackIsocUsageType](1424773-endpoint_descriptor_bits/kusbfeedbackisocusagetype.md)
- [kUSBImplicitFeedbackDataIsocUsageType](1424773-endpoint_descriptor_bits/kusbimplicitfeedbackdataisocusagetype.md)
- [kUSBNoSynchronizationIsocSyncType](1424773-endpoint_descriptor_bits/kusbnosynchronizationisocsynctype.md)
- [kUSBNotificationInterruptUsageType](1424773-endpoint_descriptor_bits/kusbnotificationinterruptusagetype.md)
- [kUSBPeriodicInterruptUsageType](1424773-endpoint_descriptor_bits/kusbperiodicinterruptusagetype.md)
- [kUSBSynchronousIsocSyncType](1424773-endpoint_descriptor_bits/kusbsynchronousisocsynctype.md)
- [kUSBbEndpointAddressMask](1424773-endpoint_descriptor_bits/kusbbendpointaddressmask.md)
- [kUSBbEndpointDirectionBit](1424773-endpoint_descriptor_bits/kusbbendpointdirectionbit.md)
- [kUSBbEndpointDirectionMask](1424773-endpoint_descriptor_bits/kusbbendpointdirectionmask.md)