---
title: kMMCCmd_READ_SUB_CHANNEL
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [driverkit 22.0+, macOS 10.12+]
path: kernel/1643411-anonymous/kmmccmd_read_sub_channel
---

# kMMCCmd_READ_SUB_CHANNEL

## Declaration

```occ
kMMCCmd_READ_SUB_CHANNEL = 0x42
```