---
title: kIOUSBUSB20ExtensionCapabilityBESLPhase
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.15+]
path: kernel/3166385-anonymous/kiousbusb20extensioncapabilitybeslphase
---

# kIOUSBUSB20ExtensionCapabilityBESLPhase

## Declaration

```occ
kIOUSBUSB20ExtensionCapabilityBESLPhase = IOUSBBitRangePhase(8, 11)
```