> ## Documentation Index
> Fetch the complete documentation index at: https://docs.almond.bot/llms.txt
> Use this file to discover all available pages before exploring further.

# hub.info

> Show the Axol arm hub's firmware version and last reset.

Prints each Axol arm hub (the RP2350 USB-to-CAN bridge for both arms) found behind the configured arm CAN channels: its USB serial and port, the firmware version it reports, and whether that is **current** or **outdated** against the firmware bundled with this package.

```bash theme={null}
axol hub.info
sudo axol hub.info
```

Run as root, it also reads the hub's last reset cause (power-on, brown-out, watchdog, …) and uptime — useful when an arm bus dropped out and you want to know whether the hub itself rebooted. That needs hub firmware 1.00 or newer; otherwise it prints `last reset unavailable`. The `USB` port path it prints (e.g. `1-3`) is what [`hub.flash --port`](/cli/hub-flash) takes.

It exits non-zero with `No Axol hub found behind the configured arm channels.` when no hub is attached or the arm interfaces have not been set up yet (run [`can.setup`](/cli/can-setup)).


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