Re: Too many COM ports used?

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

Dave, I do appreciate your help but I don't think it's a hardware problem
with the usb2serial box because it works on other machines. Yes, I've seen
problems where some sets of USB connectors on the computer actually have
different current or voltage than other sets and things work when plugged
into the front set of ports but not the back set or vice versa. (most
recently my wife's Mac actually had that problem on her G5 and it was
driving me crazy trying to figure out why her webcam wouldn't work).

But I suspect that it has something to do with how my particular XP box has
installed drivers for the COM ports. If that is the case I'm looking for
guidance from someone or from some web page about how to determine where the
COM ports are being assigned. Why would COM 1-13 be saying they are "in
use" when I don't have much plugged in. I guess this has to do with
installing drivers but how I can I tell which ones are messing things up?

It occurs to me: Here is something that I have not yet mentioned.... I also
have used another serial device, my cell phone, along with a special cable
that goes from the serial port of the cell phone to a USB port, along with
the driver software that I installed for that. And that works fine and
assigns itself to COM7 when I plug it in. I've also installed it on my work
computer where the HAM radio's USB2serial box works fine with no COM ports
not available. Oh well.






"Dave Patrick" <DSPatrick@xxxxxxxxxxxxxxxx> wrote in message
news:84B03D68-C323-41CF-8048-7BED37CC9649@xxxxxxxxxxxxxxxx
Also try from a safe mode boot. Failing that I'd get in touch with the
hardware manufacturer or try a different brand. I've seen it before where
one device works while the other one fails.

--

Regards,

Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

"SteveK" wrote:
I'm using XP Pro. I go to Device Manager > Ports (COM &LPT) > rc on USB
serial Port (COM14) > Properties > Port Settings > Advanced > then in the
COM Port Number pulldown I see 17 entries with COM1 - COM13 saying "(in
use)" and choices for COM14 - 17.

As for the command prompt inspection I only know of netstat -a which
shows TCP and UDP ports but not COM ports.

STeveK



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