> For the complete documentation index, see [llms.txt](https://docs.arkelectron.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.arkelectron.com/products/embedded-computers/ark-just-a-jetson/setup.md).

# Set Up Your Jetson

## What's Pre-Installed

Bundles ship ready to use — no flashing required:

* **Jetson**: Latest ARK Jetson image (JetPack 6 / L4T r36) on the NVMe SSD, with [ARK-OS](https://github.com/ARK-Electronics/ARK-OS) pre-installed
* **Credentials**: Username `jetson`, password `jetson`, hostname `jetson`

{% hint style="info" %}
The default password is well known — change it (`passwd`) before putting the device on a network you don't control.
{% endhint %}

A bare carrier board (no Jetson module or SSD) has no OS on it. Install your module and NVMe SSD, then follow the [Flashing Guide](/products/embedded-computers/ark-just-a-jetson/developer/flashing-guide.md).

## Steps

1. [Connect](/products/embedded-computers/ark-just-a-jetson/setup/connect.md) — reach the Jetson over USB-C, WiFi hotspot, or Ethernet.
2. [Get Online](/products/embedded-computers/ark-just-a-jetson/setup/get-online.md) — join it to your WiFi network.
3. [ARK-OS](/software/ark-os.md) — the preinstalled services and the ARK-UI web interface.


---

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