---
title: "Peripherals"
description: >-
  The LAA provides many peripherals to automate the attached DUT. The
  peripherals can be controlled from the command line using
  [laam](/software/laam_console.md#laacli).
---

The LAA provides many peripherals to automate the attached DUT. The peripherals
can be controlled from the command line using [laam](/software/laam_console.md#laacli).

## Ethernet ports

![Ethernet ports](/_images/hardware/ethernet.png){align=center}

### Public ethernet

The public ethernet port is used to connect the LAA to the lab network. This
network should let the LAA connect to the fleet management cloud service.

### Private ethernet

This ethernet port is used to connect the DUT to the LAA in a private network
managed by the LAA. In this network the IPs are:

- LAA: `198.18.0.1`
- DUT: `198.18.0.2`

```{admonition} DUT services
:class: tip
The LAA provides multiple [network services](/software/dut-services.md) on
this interface: dhcp, dns, ntp, tftp, nfs, ...
```

## OLED

The OLED screen displays information about the status of the LAA:

- IPv4
- version (or target version if an upgrade is in progress)
- [serial numbers](serials.md)
- organization

![OLED](/_images/oled-working.png){align=center}

If the LAA is unable to get an IPv4 or to connect to the [fleet management
service](/software/fleet.md), the right information will be displayed. More
information on the [connectivity guide](/guides/connectivity.md).

## Thermal probes

The LAA includes 2 embedded thermal sensors and a thermal probe connector.

![Thermal probe](/_images/hardware/thermal-probe.png){align=center}

The values can be fetched with:

```shell
laam laacli temp amb  # ambiant
laam laacli temp dut  # thermal probe
laam laacli temp sys  # CPU
```

## USB ports

![USB connectors](/_images/hardware/usb.png){align=center}

### DUT USB

- Port 1: type-C with power delivery
- Port 2, 3 and 4: type-A

Each port can be controlled from the command line with

```shell
laam laacli usb 1 on
laam laacli usb 1 off
```

```{admonition} USB port off by default
:class: warning
The 4 USB ports are turned off at LAA boot time. You need to explicitly turn them on whenever needed.
```

### LAA USB

There is 2 USB port on the front of the LAA:

- USB OTG port
- Serial over USB: LAA serial console

The USB OTG port can be used to provide a mass storage device using USB gadget
mode (USB mass storage emulation):

```shell
laam laacli usbg-ms on filename.img
laam laacli usbg-ms off
```