https://devzone.nordicsemi.com/f/nordic-q-a/29245/can-not-connect-to-nrf52-no-usb-in-ubuntu-in-win10I&#39;m a newbie so sorry if these are silly questions but I&#39;ve run out of ideas. I am trying to build and flash zephyr RTOS onto the nRF52 DK but niether JLinkExe or nrfjprog can see the boards. In fact it does show any USB devices in Ubuntu at all. en-USTelligent Community 13Mon, 08 Jan 2018 13:42:36 GMThttps://devzone.nordicsemi.com/thread/116344?ContentTypeID=1Mon, 08 Jan 2018 13:42:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c6ec6917-ac80-44c3-80c7-f4f33e71aaa0Bj&#248;rn Kvaale<p>I agree with Matt. It works just as well to use a pure windows environment for nrf52 development purposes.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/116341?ContentTypeID=1Sat, 06 Jan 2018 21:55:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d94dd0f1-a031-41ec-9a0e-a99fdebf141fMatt<p>Pure windows environment works fine too for nRF52 development purpose.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/116343?ContentTypeID=1Sat, 06 Jan 2018 15:31:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fa9a2189-8098-495a-939d-12cb713483ceBillyBobJoe<p>Thanks Turbo J, but after a great deal of shouting at my computer and feverishly trawling google I noticed that the J-Link USB ports were appearing as serial ports COM3 (nRF52840) and COM5 (nRF52832). Now i just need figure out how i add myself into the &#39;allowed&#39; group to access these ports.</p> <p>in the meantime I&#39;ve abandoned flashing and using a terminal emulator via Linux now using windows to develop, only using the Linux environment to build. :)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/116342?ContentTypeID=1Sat, 06 Jan 2018 14:58:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d89cef6c-f1b4-478d-86d5-df233e75e1b5Turbo J<p>You may need to use <code>sudo</code> in Ubuntu.</p><div style="clear:both;"></div>