---
title: kUSBPowerRequestWakeRelease
framework: kernel
role: symbol
role_heading: Enumeration Case
path: kernel/usbpowerrequesttypes/kusbpowerrequestwakerelease
---

# kUSBPowerRequestWakeRelease

The system requests a release of power upon waking.

## Declaration

```occ
kUSBPowerRequestWakeRelease = 2
```

## Discussion

Discussion When you use this enumeration with ReturnExtraPower, it  sends a message to all devices to return any extra wake power, if possible.