---
title: Input and Output Port Attributes
framework: quartz
role: collectionGroup
role_heading: API Collection
path: quartz/input-and-output-port-attributes
---

# Input and Output Port Attributes

Attributes for input and output ports.

## Topics

### Constants

- [QCPortAttributeTypeKey](quartz/qcportattributetypekey.md)
- [QCPortAttributeNameKey](quartz/qcportattributenamekey.md)
- [QCPortAttributeMinimumValueKey](quartz/qcportattributeminimumvaluekey.md)
- [QCPortAttributeMaximumValueKey](quartz/qcportattributemaximumvaluekey.md)
- [QCPortAttributeDefaultValueKey](quartz/qcportattributedefaultvaluekey.md)
- [QCPortAttributeMenuItemsKey](quartz/qcportattributemenuitemskey.md)

## See Also

### Constants

- [Patch Attributes](quartz/patch-attributes.md)
- [Port Input and Output Types](quartz/port-input-and-output-types.md)
- [Pixel Formats](quartz/pixel-formats.md)
- [Execution Arguments](quartz/execution-arguments.md)
- [QCPlugInExecutionMode](quartz/qcpluginexecutionmode.md)
- [QCPlugInTimeMode](quartz/qcplugintimemode.md)