> For the complete documentation index, see [llms.txt](https://docs.influxtechnology.com/support_guides/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.influxtechnology.com/support_guides/pinouts-influx-product-range/cables-and-product-pinouts/rebel-series/rebel-ct/the-usb-connector.md).

# The USB Connector

The USB Connector is a USB Series "B" Receptacle Interface.

<figure><img src="/files/SbkNY8zJXLWjx1MFLnBs" alt=""><figcaption></figcaption></figure>

<table data-header-hidden><thead><tr><th width="118"></th><th></th></tr></thead><tbody><tr><td><strong>Pin No</strong></td><td><strong>Pin Function</strong></td></tr><tr><td>Pin 1</td><td>VBUS USB supply voltage 5V</td></tr><tr><td>Pin 2</td><td>Data- line of USB, this signal utilises NRZI line coding</td></tr><tr><td>Pin 3</td><td>Data+ line of USB, this signal utilises NRZI line coding</td></tr><tr><td>Pin 4</td><td>Ground</td></tr></tbody></table>

{% hint style="warning" %}

#### <mark style="color:red;">WARNING</mark>

DON'T DROP THE LOGGER ONTO THE USB CONNECTOR WITH A USB CABLE PLUGGED IN.
{% endhint %}


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