---
title: fTdmProtocolVersion
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.12.2+]
path: iokit/scsicmd_inquiry_pagec0_data/2721385-ftdmprotocolversion
---

# fTdmProtocolVersion

## Declaration

```occ
UInt8 fTdmProtocolVersion;
```