---
title: MODE_DATA_LENGTH
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.3+]
path: iokit/spcmodeparameterheader6/1555519-mode_data_length
---

# MODE_DATA_LENGTH

## Declaration

```occ
UInt8 MODE_DATA_LENGTH;
```