# General information

<table border="1" id="bkmrk-download-technical-s" style="border-collapse: collapse; width: 100%;"><colgroup><col style="width: 50%;"></col><col style="width: 50%;"></col></colgroup><tbody><tr><td>Download technical specification</td><td>[Technical Specification](https://www.atreyo.in/sites/default/files/a-downloads/ADI-U4RS-1%20Technical%20Specification.pdf)</td></tr></tbody></table>

The interface has all RS485 ports isolated from USB and from each other. This ensures a high level of protection against interference.

[![ADI-U4RS-1-block-diagram.png](https://docs.atreyo.in/uploads/images/gallery/2025-08/scaled-1680-/adi-u4rs-1-block-diagram.png)](https://docs.atreyo.in/uploads/images/gallery/2025-08/adi-u4rs-1-block-diagram.png)