---
title: SECOND_LEVEL_ADDRESSING
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.3+]
path: iokit/scsicmd_report_luns_lun_entry/1477364-second_level_addressing
---

# SECOND_LEVEL_ADDRESSING

## Declaration

```occ
UInt16 SECOND_LEVEL_ADDRESSING;
```