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  "identifier" : "/documentation/USBDriverKit/tIOUSBHostPortType",
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# tIOUSBHostPortType

Constants indicating a port’s type.

```
enum tIOUSBHostPortType : unsigned int;
```

## Topics

### Getting the Port Types

[`kIOUSBHostPortTypeStandard`](/documentation/USBDriverKit/tIOUSBHostPortType/kIOUSBHostPortTypeStandard)

A general-purpose USB port.

[`kIOUSBHostPortTypeCaptive`](/documentation/USBDriverKit/tIOUSBHostPortType/kIOUSBHostPortTypeCaptive)

A port for which the device cannot be physically disconnected.

[`kIOUSBHostPortTypeInternal`](/documentation/USBDriverKit/tIOUSBHostPortType/kIOUSBHostPortTypeInternal)

A port that cannot be physically disconnected from the host machine.

[`kIOUSBHostPortTypeAccessory`](/documentation/USBDriverKit/tIOUSBHostPortType/kIOUSBHostPortTypeAccessory)

A port for which the device might require additional authentication before a driver can access it.

[`kIOUSBHostPortTypeExpressCard`](/documentation/USBDriverKit/tIOUSBHostPortType/kIOUSBHostPortTypeExpressCard)

A port containing an expansion card.

### Enumeration Cases

[`kIOUSBHostPortTypeC`](/documentation/USBDriverKit/tIOUSBHostPortType/kIOUSBHostPortTypeC)

[`kIOUSBHostPortTypeUnknown`](/documentation/USBDriverKit/tIOUSBHostPortType/kIOUSBHostPortTypeUnknown)

---

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