It installed it to the same port because it is a generic driver package and doesn't recognize which cable is which. I believe that is your problem. What happens is this, Brand A cable comes with cable drivers and Brand B cable comes with cable drivers and they both happen to be the same drivers. They may be labeled as different but USB drivers for the most part are really the same, no matter what the application.
This wouldn't be a problem when utilizing a desktop with all the USB and serial ports available. I recently used one to hook up Echolink and a Rascal, it didn't need the drivers since they were already installed for another little used program that utilized a USB cable, it did though, assign a different port. That is on a desktop, it won't work right with a laptop from what I have read.
And as far as I am concerned, I would never use a laptop with any ham radio operating program. Desktops have the ability to do so much more. I have heard so many people complaining that something doesn't work and it's usually because of a need for multiple cables and the machine hasn't the ability to perform the way we hope.
A KNOW CODE AMATEUR, since 1970. 900's my new band.
Except in times of declared emergency, Amateur Radio should be fun! If it's not, you must be doing something wrong!
I don't answer to "contact."