---
title: kIOUSBUSB20ExtensionCapabilityBESLD
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.15+]
path: kernel/3166385-anonymous/kiousbusb20extensioncapabilitybesld
---

# kIOUSBUSB20ExtensionCapabilityBESLD

## Declaration

```occ
kIOUSBUSB20ExtensionCapabilityBESLD = IOUSBBitRange(12, 15)
```