> 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/rexgen-series-product-manuals/rexgen-series-usage-guides/rexgen-as-pass-thru/savvycan.md).
# SavvyCAN
### Add a new connection
### Select Pass-thru and ReXgen:
### Select CAN bus speed.
{% hint style="info" %}
#### Notes:
* Changing bus speed (from combo box), unselecting the currently selected device.
* The user needs to re-select the device and then the button “Save Bus Settings”.
* First, click on “Save Bus Settings” and Disconnect the devices.
* The second click makes a real connection, and the application collects CAN messages.
* SavvyCAN is not an Influx Technology software.
{% endhint %}
A detailed[ guide for SavvyCAN with ReXgen ](/support_guides/rexgen-series-product-manuals/rexgen-series-usage-guides/savvycan-with-rexgen.md)
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