Actually the issue is the tablet is able to supply power to external devices, which must be disabled when the unit is being charged from an external source. Best I can tell in some devices The direction of power is either negotiated by a digital message upon connection of an external device or by shorting or opening the data lines when the unit is to be charged. It looks like Dell tablets can operate with specific adapters but there is no guarantee this would work on another brand (and lots of review comments saying it doesn't).
This was all a surprise to me, I just figured I could hook things up and go. Mark. N2QT > On Jul 7, 2015, at 11:50 AM, Tom <tom...@videotron.ca> wrote: > > Hmm, that's interesting. Have you tried a powered USB hub? I would think that > should work. > 73 Tom > va2fsq.com > > Sent from BlueMail > >> On Jul 7, 2015, at 10:57 AM, Mark N2QT via Elecraft >> <elecraft@mailman.qth.net> wrote: >> I bought a win 8.1 (not RT) tablet from Cowboom for $59, hoping to interface >> it using its >> micro USB port. However the USB port is the only way to provide power to >> the thing, >> and battery life is such I'd like to leave it on charge while operating, >> while not losing the >> USB port data functionality. >> >> The unit is sold by Best Buy under the Unbranded name. >> >> Anyone have luck powering such a tablet without losing the USB data >> capability? >> >> Mark. N2QT >> >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered >> to tom...@videotron.ca ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
