> For the complete documentation index, see [llms.txt](https://amobile-solutions.gitbook.io/yocto-developer-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://amobile-solutions.gitbook.io/yocto-developer-guide/test-and-use-the-interface/power-management.md).

# Power Management

## Suspend to RAM

This state offers significant power savings as everything in the system is put into a low-power state, except for memory, which is placed into the self-refresh mode to retain its contents.<br>

To suspend to RAM execute the following command:

```
pm-suspend
```

## Wake up

There are 3 ways to make system wake up:

1. wake-up by on-board keypad (click Download button)
2. use RTC (user can use `rtcwake` command to test suspend/resume)
3. USB wakeup support: user can wake-up system by plug-in/out USB device or click any key on USB keyboard. Precondition for USB wakeup: User needs to plug-in an OTG cable on USB0 port to translate to USB host mode.