---
title: "StandardUSB20::convertBESLIndexToNs"
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 12.0+]
path: kernel/3793955-standardusb20
---

# StandardUSB20::convertBESLIndexToNs

## Declaration

```occ
IOReturn StandardUSB20::convertBESLIndexToNs(uint32_t beslIndex, uint32_t & beslNs);
```