https://devzone.nordicsemi.com/f/nordic-q-a/70720/nrf51-dk-not-recognized-by-computerNewly purchased nRF51 DK connected via USB cable to a computer. Attempted to program firmware via BLE sniffer and an error occurred (image attached). Connected nRF51 DK does not appear in nRFgo Studio or Windows 10 device manager. What to do to get correcten-USTelligent Community 13Mon, 25 Jan 2021 22:55:24 GMThttps://devzone.nordicsemi.com/thread/291147?ContentTypeID=1Mon, 25 Jan 2021 22:55:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:63e96882-f66c-4342-802e-d25e7f02e8b5DanielBrox<p>Thanks.&nbsp; Tried those steps and couldn&#39;t get device to work correctly.&nbsp; Replacement device works as expected.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/290475?ContentTypeID=1Thu, 21 Jan 2021 11:41:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:543b15e9-0218-4bac-8246-6b522658e43eSimonr<p>Hi</p> <p>First off, please make sure that the USB cable you&#39;re using is working correctly and that it is able to communicate with the computer and that it is not just a charging cable. Can you enter the Device Manager on your computer to see if it is picked up as a COM port (it should be named JLink CDC UART port or similar).</p> <p>If not, make sure that it is powered on, and go through the steps described by Martin in<a href="https://devzone.nordicsemi.com/f/nordic-q-a/24592/my-nrf52-nrf51-dk-kit-doesn-t-work"> this case</a>&nbsp;to see if that helps.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>