https://devzone.nordicsemi.com/f/nordic-q-a/111586/connect-nrf9160dk-with-external-mcuHi, I&#39;m just a beginner in nrf91 series MCU and I want to communicate my nrf9160dk with existing application in SMT32 over UART. I want to use UART1 which is default connected to VCOM2 but it&#39;s also available through P0.01, P0.00, P0.15, and P0.14 headeren-USTelligent Community 13Wed, 29 May 2024 12:32:54 GMThttps://devzone.nordicsemi.com/thread/486439?ContentTypeID=1Wed, 29 May 2024 12:32:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8ec4f1dd-71a2-44a4-b177-cc39811271a1runsiv<p>Hi Bradler</p> <p>1. The first part looks good to me</p> <p>2.&nbsp;VCOM0 – Connected to nRF9160 System in Package (SiP) (default) so it should not be affected by you programming hello world on the 52940&nbsp;</p> <p>Regards</p> <p>Runar</p><div style="clear:both;"></div>