---
title: IOUSBHostCIPortCapabilitiesMessageControlPortNumberPhase
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 11.0+]
path: kernel/3612505-anonymous/iousbhostciportcapabilitiesmessagecontrolportnumberphase
---

# IOUSBHostCIPortCapabilitiesMessageControlPortNumberPhase

## Declaration

```occ
IOUSBHostCIPortCapabilitiesMessageControlPortNumberPhase = IOUSBBitRangePhase(16, 19)
```