https://devzone.nordicsemi.com/f/nordic-q-a/123016/slm-customizationI have a nrf9160 DK but when upload SLM application to it i can not send AT commands to it over it&#39;s usb port but in asset tracker application it works i want to modify SLM so it work on the USB port As I want to connect to AWS via serial terminal soen-USTelligent Community 13Mon, 21 Jul 2025 12:08:03 GMThttps://devzone.nordicsemi.com/thread/543008?ContentTypeID=1Mon, 21 Jul 2025 12:08:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6917e9f1-a35a-48dd-81fe-a4b397a040ebHakon<p>Hello,</p> [quote user=""]I have a nrf9160 DK but when upload SLM application to it i can not send AT commands to it over it&#39;s usb port but in asset tracker application it works&nbsp;[/quote] <p>Serial to USB should work with SLM the same way it works with the normal AT client application. Can you describe what you have tried and provide any logs if you have?</p><div style="clear:both;"></div>