new comm port install not working

I purchased a a usb port to attatch my mouse to so I could use the current port that my mouse was in for my palm to sync to my computer. The new port is working fine but the old port is not reading the palm to sync with my computer. Is there some error on my part in not changing the comm ports to coincide with the equipment or is it more??

 

So, did you get a USB port or a COM port, your post is kind of confusing.