Dimly powered USB connectors are as common as nails in computer land. It's a favorite cheap, cheap trick by the bulk manufacturers, where even pennies multiplied by a million units is a lot of money.
I have had that kind of problem in just about every PC, laptop I ever bought. Follow Harry's advice: Powered hub. 73, Guy. On Wed, Feb 18, 2015 at 12:15 PM, Harry Yingst via Elecraft <[email protected]> wrote: > You may need to use a powered hub > Many laptops do not put out enough of a level to work properly > > > From: Karel Karmasin <[email protected]> > To: [email protected] > Sent: Wednesday, February 18, 2015 11:03 AM > Subject: [Elecraft] RS232 troubles > > Hi there, > > I have following problems with my RS232 K2 connection: > On a desktop PC with WIN7 everything working OK, all COM ports including > USB/COM adapter running without any issue. When I am reconnected same > USB/COM adapter with the same cable (between K2 and adapter) to the USB > port on laptop, no communication. Of course the driver in laptop is > installed and from the utilities and hardware control looks all OK. USB > ports on laptop are working (checked with USB flash). All parameters on > the COM port are the same as on desktop PC. I am on the end of my > knowledges now, any help? > > Karel, OK2FD > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
