https://devzone.nordicsemi.com/f/nordic-q-a/3476/mini-usb-data-linesHi all, I am new to hardware design and would greatly appreciate pointers. We intend to use mini-USB port for charging/power supply rather than for data. What is the best way to terminate the unused mini-USB D+/D- lines - float or grounding them? en-USTelligent Community 13Thu, 18 Sep 2014 13:10:44 GMThttps://devzone.nordicsemi.com/thread/12583?ContentTypeID=1Thu, 18 Sep 2014 13:10:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f7bf15a7-57e4-4da2-b74f-34a1fdb26a44Asbj&#248;rn<p>You can leave them floating or you can terminate them, if you are only using the USB interface for charging, it doesn&#39;t initially matter. But, some phone/tablet manufacturers puts voltage dividers on the data line in order to recognize a certain charger. So depending on what you want to charge, I would recommend to have a little look around google for USB charging whatever you are charging.</p><div style="clear:both;"></div>