====== External Connections ======

===== Water Resistant Front Panel Model =====

{{ :comfilehmi:external_connections:chmilayoute.png?nolink |}}

  * USB Host : Supports external keyboard.
  * Ethernet: Currently not supported.  Ethernet functionality is planned for the future.
  * USB Device (Download Port) : For uploading Comfile HMI Editor projects to the device. 
  * microSD Card : 
      * CHA Series : The microSD card can be used to store HMI project data (e.g. fonts, images, etc...) or for logging and data collection.
      * CHC Series : is not needed to run a project, but is needed for logging data
  * RTC battery : RTC batter compartment.  Lifetime approximately 8 years.

\\ 

===== Open-frame Model =====

{{ :comfilehmi:external_connections:comfilehmidesc_pr.jpg?nolink |}}

  * Dip switch for factory reset.  For normal operation, set to 1-ON, 2-ON.


===== USB Cable =====

A mini-B 5-pin USB cable is required.

{{ :comfilehmi:external_connections:usbmini.jpg?nolink |}}

  * USB cables are typically not included with each purchase.  Please purchase separately.

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