> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.morningstar.io/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How do I set an external aux controller to change banks?

Connect an aux controller to the Omniport with a stereo cable. Be sure to change the expression input type to `Fixed Switch Custom` in the Main Configuration Menu. Then just select the desired options on what you want each switch to do.

![](https://storage.crisp.chat/users/helpdesk/website/61acbb3f3c4cbc00/6039126e-51a5-4202-9d16-4db187_t3t09b.png)