https://devzone.nordicsemi.com/f/nordic-q-a/66259/problem-of-nrf52-dk-recognitionHi there, I purchased the nRF52 DK, and I am going to study how to use basic tools. However, there is a problem with recognition between the computer and the nRF52 DK. The phenomenon is that LD5 is constantly flickering. A problem occurreden-USTelligent Community 13Wed, 23 Sep 2020 12:26:43 GMThttps://devzone.nordicsemi.com/thread/271090?ContentTypeID=1Wed, 23 Sep 2020 12:26:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:36a7664b-f6aa-44c5-bf15-23e8f02221f4Kenneth<p>Hello,</p> <p>Where did you purchase these boards?</p> <p>If you install nRF Connect for Desktop, are these boards identified if you use &quot;Programmer&quot; app?<br /><a href="https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Connect-for-desktop">https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Connect-for-desktop</a></p> <p>Maybe you can send a picture or the board so I can check if all switches are set to the correct position?</p> <p>What do the boards come up as in device manager in Windows?</p> <p>Does it come up as a removable disk in Windows?</p> <p>Maybe you can double check if you have another USB cable available, the most likely issue is the USB cable. Some USB cables are charging only.</p> <p>Best regards,<br />Kenneth</p><div style="clear:both;"></div>