https://devzone.nordicsemi.com/f/nordic-q-a/67483/usb-not-recognizedI bought a development board nRF52840. Connecting it to the PC (WIN 10 x64) will not recognize the device. At first I thought it could be the cable, bought a couple and it still didn&#39;t work. Tried a couple arduinos and they are immediately recognizeden-USTelligent Community 13Thu, 22 Oct 2020 08:26:14 GMThttps://devzone.nordicsemi.com/thread/276368?ContentTypeID=1Thu, 22 Oct 2020 08:26:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6b2f4c6a-9edf-4bee-952f-3554bd9167e1JONATHAN LL<p>Hi quimio,<br /><br />Check out this case&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/8795/reflashing-j-link-on-nrf51-dk">https://devzone.nordicsemi.com/f/nordic-q-a/8795/reflashing-j-link-on-nrf51-dk</a>.&nbsp;<br /><br />You can download the latest <a href="https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52-DK/Download#infotabs">JLINK firmware here</a>, you need to&nbsp;h<span>old down the &quot;IF BOOT/RESET&quot; button on the DK while switching it on, and it should show up as an external disk named &quot;BOOTLOADER&quot;.<br />Then drag the firmware over to the &quot;BOTLADER&quot; external disk.&nbsp;<br /><br />Regards,<br />Jonathan</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/276304?ContentTypeID=1Wed, 21 Oct 2020 19:57:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:755e8548-0315-4707-9095-96e69da20229quimio<p>If I press the &quot;IF BOOT/RESET&quot; pushbutton while switching the power on a storage drive will pop on Windows Explorer, but nRF connect will still say No devices Available&nbsp;</p><div style="clear:both;"></div>