---
title: ADDITIONAL_LENGTH
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [driverkit 22.0+, Mac Catalyst 13.0+, macOS 10.0+]
path: iokit/scsicmd_inquiry_standarddata/1572999-additional_length
---

# ADDITIONAL_LENGTH

## Declaration

```occ
UInt8 ADDITIONAL_LENGTH;
```