https://devzone.nordicsemi.com/f/nordic-q-a/39571/app_usbd-working-on-nrf52-dongle-not-on-nrf52840-dkI have a small app_usbd demo which works fine on the nrf52 dongle, but not on the larger nrf52840-dk. I am running SDK 15.0 with the errata fix mentioned on several other posts here. The code does not hang or crash, but the USB device does not enumerateen-USTelligent Community 13Thu, 18 Oct 2018 11:28:35 GMThttps://devzone.nordicsemi.com/thread/153458?ContentTypeID=1Thu, 18 Oct 2018 11:28:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:23616303-a0da-4d17-a84a-b8b810b652bdSigurd<p>Hi,</p> <p>1) Do you see the same issue with the USB examples in the SDK? e.g. the&nbsp;<span><a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.2.0/usbd_hid_generic_example.html?cp=4_0_0_4_5_50_6">usbd_hid_generic </a>?</span></p> <p><span>2) Have you tried a different USB cable? Make sure that you are not using a &quot;charge&quot; only USB cable.</span></p> <p>3) Are you using the nRF USB (J3) connector?</p> <p>&nbsp;<img alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1539862044307v3.png" /></p><div style="clear:both;"></div>