---
title: fMaxReadSize
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [driverkit 22.0+, Mac Catalyst 13.0+, macOS 10.12.2+]
path: iokit/scsicmd_inquiry_pagec0_data/2721390-fmaxreadsize
---

# fMaxReadSize

## Declaration

```occ
UInt32 fMaxReadSize;
```