---
title: kIOFWDisablePhyOnSleep
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1645951-anonymous/kiofwdisablephyonsleep
---

# kIOFWDisablePhyOnSleep

## Declaration

```occ
kIOFWDisablePhyOnSleep = (1 << 4)
```

## Discussion

Discussion Disable Phy, when machine is in Sleep mode