https://devzone.nordicsemi.com/f/nordic-q-a/115703/cannot-connect-to-th-on-board-jlinkon cannot connect to the on-board Jink of the NRF52840DK board I have tried: Updating to the latest Jink driver installed nrf connect tools for windows connecting to J2 Green LED LED5 is blinking rapidly power switch: on power source: nrfen-USTelligent Community 13Mon, 21 Oct 2024 13:18:59 GMThttps://devzone.nordicsemi.com/thread/507158?ContentTypeID=1Mon, 21 Oct 2024 13:18:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3d15962e-83e5-4fb6-986f-5eb1df031288bobheslar<p><span>oops, i was not using the correct&nbsp;USB&nbsp; (both USB signals + power) type cable, now the green LED is solid, thanks for the help</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/507151?ContentTypeID=1Mon, 21 Oct 2024 13:09:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5c97b342-f201-446a-a0a2-ed37785bb725SwRa<p>Hi Robert,</p> <p>It seems that the DK is not being detected at all in your PC (since it does not show up in the device manager list as well). Is this a new DK or was it an older one that just stopped responding.? What is the version of the DK.?</p> <p>Regards,</p> <p>Swathy</p><div style="clear:both;"></div>