# all-in-one module

![](https://1542051135-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LU5o-Ac6o-JIpVeYPKs%2F-LjuH0sNIiRx1SB-e5wR%2F-LjuHV6uokWWHf1C4fAa%2Fmodule-all-in-one.png?alt=media\&token=1f71d7eb-ee28-4f30-919f-f63c30b39ebb)

All-in-One module integrates the **buzzer**, **USB** port and **LED** indicator. This provides a cleaner installation on your drone and thus simplifies integration.

[Get more information about this product and shop here](https://store.drotek.com/all-in-one-Pixhawk).

The module allows you to configure the Pixhawk via an external USB. This becomes essential when the flight controller is hidden in your drone.

The LED provides information on the state of the system via various mixtures of colors and flashes.

![LED Pixhawk 3 Pro](https://github.com/drotek/Docs-Pixhawk3Pro/blob/master/images/LED-and-buzzer-signal-drotek.png?raw=true)

The buzzer is used to inform the system status, the same way as LEDs do, but with different sounds.

You can listen all tunes on this [site](http://copter.ardupilot.com/wiki/common-sounds-pixhawkpx4/).

## How to plug the All-in-One module to the Pixhawk 3 Pro

![](https://1542051135-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LU5o-Ac6o-JIpVeYPKs%2F-LjuH0sNIiRx1SB-e5wR%2F-LjuH2r73jx69gOlVXKn%2Fimages.jpeg?alt=media\&token=e29a88ef-2e5a-4c89-9e0a-81dbad9cd8ac)