https://devzone.nordicsemi.com/f/nordic-q-a/91301/vs-code-cannot-connect-to-device-nrf52840-dongleIn My Window 10 PC., No connected devices are shown in VS Code when nRF52840 dongle is inserted in PC USB Port. But in Programmer, nRF52840 dongle can be found. Device Manager is shown &quot;nRF52 SDFU USB&quot;. Dongle LD2 is pulseing red. The same problemen-USTelligent Community 13Thu, 25 Aug 2022 07:20:59 GMThttps://devzone.nordicsemi.com/thread/383177?ContentTypeID=1Thu, 25 Aug 2022 07:20:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:76850ff8-8a82-49fc-ab4c-e01e553e32f9Amanda Hsieh<p>Hi,</p> <p>Since t<span>he nRF52840 Dongle</span>dongle doesn&#39;t have the onboard debugger, it needs to&nbsp;<span>connect an external debugger to debug. See the&nbsp;</span>Using an external debugger section in this<span>&nbsp;<a href="https://devzone.nordicsemi.com/guides/short-range-guides/b/getting-started/posts/nrf52840-dongle-programming-tutorial">tutorial</a>. I would suggest you use nRF52840DK for development.&nbsp;</span></p> <p><span>Regards,<br />Amanda</span></p><div style="clear:both;"></div>