https://devzone.nordicsemi.com/f/nordic-q-a/103852/nrf52840-dongle-effective-communication-rangeI am evaluating the nRF52840 family. The setting for my question is an nRF52840 Dongle and nRF52840 DK, straight out of the box with no configuration changes. Each devices is powered from a different computer USB. The two devices exchange a simple messageen-USTelligent Community 13Sun, 24 Sep 2023 15:18:27 GMThttps://devzone.nordicsemi.com/thread/447315?ContentTypeID=1Sun, 24 Sep 2023 15:18:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c1b7ee73-6d7a-4b86-b789-aea83794541eRahav<p>Thank you, your answer was to the point and professional, and a great whitepaper.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/447209?ContentTypeID=1Fri, 22 Sep 2023 09:06:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1b8e2de5-e886-4671-b3f1-831f2783f863ketiljo<p>1. The signal falls of pretty quickly so &gt;10 cm should be ok.</p> <p>2. Only USB 3.0. Take a look at this:&nbsp;<a href="https://www.usb.org/sites/default/files/327216.pdf">https://www.usb.org/sites/default/files/327216.pdf</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/446952?ContentTypeID=1Wed, 20 Sep 2023 18:29:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:591f291d-bef9-43af-ac4c-78ea2f4a3ce8Rahav<p>Thank you for the reply.&nbsp;</p> <p>1. Some were plugged directly into USB 3.0 ports. I will buy extension cables and retry. How far do the nRF52840 DK and Dongle need to be away?</p> <p>2. Are there similar concerns regarding USB 2.0?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/446467?ContentTypeID=1Mon, 18 Sep 2023 13:24:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:743253b5-bda8-4d2d-b95d-029bd48e8366ketiljo<p>Do you have the dongle plugged into a USB3.0 port? Try using an extension cable to get it away from any USB3.0 devices.</p><div style="clear:both;"></div>