> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/logger-card-client-user-manual/configuration/logger-card-client-configuration/define-logger-card-client-settings.md).

# Define Logger Card client settings

Click the gear icon at the top to open the settings form:

<img src="/files/4315026ec851d9f3555de1dbf1eef9ded97c0f86" alt="" width="375">

Select the monitoring system type (Boomerang 2, CoolGuard or Boomerang 3) and set the URL as described in the table below. Usually there is nothing else to define.

<table><thead><tr><th width="171">Field</th><th>Description</th></tr></thead><tbody><tr><td>Adapter</td><td>List of 1-Wire adapters that are connected and can be used.</td></tr><tr><td>Port</td><td>List of USB ports where adapters are connected.</td></tr><tr><td><img src="/files/edb57d7424457e310d300b8dc6a9ee79d37cb8bf" alt=""></td><td>Click this button to search for 1-Wire adapter if it is not detected. If a 1-Wire adapter is connected to the PC, it will be discovered, and “Adapter” and “Port” will be filled in automatically. Press “Save” button to apply the settings.</td></tr><tr><td>URL</td><td>The URL of B2, B3 or CoolGuard web server. The B2SERVER or B3SERVER address shall be obtained from your system administrator. <br>The URL field shall be: <br><a href="http://b2server/Receiver.aspx">http://B2SERVER/Receiver.aspx</a> for B2 <a href="https://www.coolguard.se/xml/logger.asp">https://www.coolguard.se/xml/logger.asp</a> for Coolguard <a href="https://b3server/api/transportlog">https://B3SERVER/api/transportlog</a> for B3. <br>If you use B3 server at <a href="https://boomerang3.com/">https://boomerang3.com</a> then the URL shall be: <br>https://boomerang3.com/api/transportlog</td></tr><tr><td>Proxy URL</td><td>To use proxy server, enter its URL address and select “Enable Proxy” checkbox.</td></tr><tr><td>Select system</td><td>Use radio button to select the system type the application shall work with.</td></tr><tr><td><img src="/files/73e375cf1ca666486631444592eafe199ceebe42" alt=""></td><td>Use “Save” button to apply settings. In case there is problem with saving the settings make sure that Logger Card Client is run with the administrative privileges.</td></tr><tr><td><img src="/files/f39b395ed28e961c8a20dc8cfb4c24edb64bd25d" alt=""></td><td>Use “Cancel” button to close the form without saving the changes.</td></tr></tbody></table>


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