> For the complete documentation index, see [llms.txt](https://docs.phoenixlidar.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.phoenixlidar.com/hardware-and-interfaces/navbox/al3-16-al3-32/nav-box-front-and-rear-ports.md).

# Ports and User Elements

The rover’s NavBox has a front and back interface panel that is designed to easily connect system components and external devices.

## Front Panel

![](https://content.gitbook.com/content/dEevfLZRIk38LUPwDa4V/blobs/kbE33PY9TpIcTbtbkM18/alpha%20front-%20numbering-01.png)

1. Wi-Fi Antenna terminal/s
2. UHF Antenna port (optional)
3. GPS Antenna port/s
4. CPU Power button
5. Sensor Power button
6. LiDAR/IMU port
7. Status LED indicators
8. DC Power Input (12 V - 28 V)
9. External Input/Output Data port

## Rear Panel

![](https://content.gitbook.com/content/dEevfLZRIk38LUPwDa4V/blobs/Z5GvjinttZKnfb13jflH/alpha%20front-%20numbering-02.png)

1. Exhaust vents
2. Mini HDMI port
3. USB 3.0 ports
4. LAN port
5. Mini DisplayPort