The additional ports are true serial ports. I've never had any problems with
the device.

Doug

"Jsp" wrote in message
...
Doug Dotson wrote:
Check out www.keyspan.com

"Jsp" wrote in message
...

Leanne wrote:

What you need is called a serial to USB adapter or converter.



That's exactly what I need. It never even occured to me that a thing like
this exists.
I saw one on the site mentioned above that provides one RS232 serial
interface. So I presume this also makes the OS and the chartplotting
program "think" the computer now has a COM-port, which is needed for the
setup of the connection with the GPS?

Thanks again.
Jsp