https://devzone.nordicsemi.com/f/nordic-q-a/93829/nrf9160dk-programming-with-gpio-level-set-to-3vHi, When SW9 is set to the default 1V8 position both the programmer and virtual COMs work fine. When I switch SW9 to the 3V position the board is no longer detected by the PC. The LED5 diode doesn&#39;t blink anymore. I would like to get 3V levelen-USTelligent Community 13Mon, 14 Nov 2022 09:30:29 GMThttps://devzone.nordicsemi.com/thread/395494?ContentTypeID=1Mon, 14 Nov 2022 09:30:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:07716d07-6864-4745-a5c5-d96a5f31d52bMartinnet<p>Thanks to your feedback I started to suspect HW issue in my board. I found that the resistor R96 has been accidentally wiped out by a plastic screw when I mounted the board to a custom breadboard. I will fix the problem and I believe the problem should disappear.&nbsp;</p> <p>Thank you for the support!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/395486?ContentTypeID=1Mon, 14 Nov 2022 08:47:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:da95b753-05bc-49ec-b66b-2fbe7e8a238fKazi Afroza Sultana<p>Hello,</p> <p>After switching SW9 to 3V, could you please try to power off the switch and then on again. Try this and see if you can see the com port.</p> <p>Thanks.</p> <p>Best Regards,</p> <p>kazi Afroza Sultana</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/395462?ContentTypeID=1Mon, 14 Nov 2022 06:21:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b646043c-3397-416b-b952-7d9f4c724771Achim Kraus<p>Running my nRF9160-DK, v1.1.0 with 3V, it&#39;s still possible to use the serial and to flash it via JLink.</p><div style="clear:both;"></div>