> For the complete documentation index, see [llms.txt](https://emotiv.gitbook.io/x-trodes-user-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://emotiv.gitbook.io/x-trodes-user-manual/introduction/dau-recording-system.md). # DAU – Recording System
DAU three-quarter view
#### Status LED **Ready for use**: Solid green\ **Recording and streaming**: Solid blue\ **SD card missing**: Blinking red\ **SD card is faulty**: Flickering green blue #### Power Button (On/Off) To turn on the DAU press shortly on the power button.\ To turn off the DAU press the power button for 1 sec. #### Charging Port (USB-C) To charge the DAU, connect it to a 5V DC power supply. #### Charger LED **Charging**: Orange\ **Ready for use**: Green
DAU side view with charging LED
#### Connector Socket DAU’s connection to the patch. #### MicroSD Card Slot Push-push mechanism slot for inserting and ejecting the SD card. The system contains a 32GB V30 speed class MicroSD card. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://emotiv.gitbook.io/x-trodes-user-manual/introduction/dau-recording-system.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.