https://devzone.nordicsemi.com/f/nordic-q-a/36809/custom-board-with-nrf52832-can-not-connected-to-nrf-connect-in-pcHi, I&#39;ve built a custom board with nRF52832, without other MCU like PCA10040. I use a FT232RL to bridge the USB to nrf UART, flashed nrf5 uart connection firmware ble_connectivity_s132_uart_pca10040. Modified code to actual GPIO connect on the boarden-USTelligent Community 13Fri, 27 Jul 2018 13:25:30 GMThttps://devzone.nordicsemi.com/thread/141702?ContentTypeID=1Fri, 27 Jul 2018 13:25:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5a096cf3-5f8d-4173-9bd9-9e6d19b24273bjorn-spockeli<p>HI Weihe,&nbsp;</p> <p>our <a href="https://www.nordicsemi.com/eng/Products/nRF52840-Dongle">nRF52840 Dongle&nbsp;</a>&nbsp;does not have a J-LINK OB and uses a serial connection over USB to communicate with nRF Connect.&nbsp;</p> <p>The BLE application in nRF Connect for Desktop relies on the devices having the Nordic vendorID/productID.&nbsp;</p> <p>Best regards</p> <p>Bjørn&nbsp;</p><div style="clear:both;"></div>