Steve,

Before connecting to the USB port, you need to download and install the 
Kenwood virtual comm port driver from this site:
https://www.google.com/?gws_rd=ssl

Follow the instructions about when to connect the cable.  It will 
install as a comm port number which can be changed in windows later if 
need be.  It may install as a very high number (up in the teens).   
After this, use that comm port  for your software connection.

This will also activate your internal sound card.   It will become the 
windows default sound card, and some have had problems with losing 
speech.   Be sure your screen reader is using the internal pc sound card 
and not set  to use the "default" card.

The serial and usb ports are indipendent and you  could use the serial 
port via a serial to usb adapter without having to install the kenwood 
driver.   But no use of the sound card via the serial port on the radio.

73, Steve KW3A



On 9/10/2015 4:23 PM, Steve Dresser wrote:
> Hi all,
>
> I know at least a few folks on this list have connected a TS-590 to a PC =
> via USB, and I'd appreciate any guidance from experts on this list.  =
> Right now, I'm primarily interested in controlling the radio, but later =
> on I may want to use the 590's internal sound card.  Do I need =
> additional drivers to use USB for radio control, or can I just plug and =
> play?
>
> Steve
>