> For the complete documentation index, see [llms.txt](https://docs.cubepilot.org/user-guides/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cubepilot.org/user-guides/cubepilot-ecosystem/cubepilot-partners/union-robotics/herelink-blue/herelink-blue-faqs.md).

# HereLink Blue FAQs

## Can the language on the controller be switched?

The system language can be switched in the slide down menu.

## Why aren't the LEDs lit, even though the rover unit are correctly connected?

Check the power input. It should be 5V - 12.6V max (3s Lipo supported) and the battery should be charged.

## Why can't I connect to 2.4GHz WIFI?

Currently, the Datalink only enables 5.8GHz WIFI for internet connection. Therefore, to load maps, you will need to connect to a 5.8GHz WIFI network.

## Does the HereLink Blue have data encryption?

The HereLink Blue encryption over the air uses aes-128-ctr


---

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