# PortCapacity

> The number of connections a port can accept.

## Definition

* **Type:** Enum
* **Namespace:** [Unity.GraphToolkit.Editor](/engine/6000.6/script-reference/unity/graphtoolkit/editor.md)
* **Assembly:** UnityEditor

```csharp
public enum PortCapacity
```

## Fields

| Value                                                                                      | Description                                   |
| ------------------------------------------------------------------------------------------ | --------------------------------------------- |
| [Multi](/engine/6000.6/script-reference/unity/graphtoolkit/editor/portcapacity/multi.md)   | The port can accept multiple connections.     |
| [None](/engine/6000.6/script-reference/unity/graphtoolkit/editor/portcapacity/none.md)     | The port cannot accept any connection.        |
| [Single](/engine/6000.6/script-reference/unity/graphtoolkit/editor/portcapacity/single.md) | The port can only accept a single connection. |