https://devzone.nordicsemi.com/f/nordic-q-a/43784/usb-and-unconnected-vbusHello, I forgot to connect USB VBUS on nRF52840 VBUS. D+ internal pull up looks depending on VBUS so what can I do please ? Thank you.en-USTelligent Community 13Thu, 21 Feb 2019 09:47:59 GMThttps://devzone.nordicsemi.com/thread/172263?ContentTypeID=1Thu, 21 Feb 2019 09:47:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7e823082-18df-401a-9731-8352b2eb60f0Fabien Comte<p>Ok thank you.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/171545?ContentTypeID=1Mon, 18 Feb 2019 07:27:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8f86b1a7-a15f-4a92-85cb-1beb37c224ccRK<p>Make a new board, it won&#39;t function without VBUS. From the documentation</p> <p style="padding-left:30px;">&quot;both VBUS and either VDDH or VDD supplies are required for USB peripheral operation&quot;</p><div style="clear:both;"></div>