How to hotswap

I've been encountering a perplexing thing with my palm and my laptop. Occasionally when I plugged the visor into the USB port and started syncing it would start up a whole "Found new hardware" thing. Which was annoying, because it wasn't new hardware, but at least it did find the drivers without me having to dig the CD out. I was a bit perplexed by this as, as far as I was concerned, you weren't supposed to have to leave USB things plugged in all the time. But suddenly, in the last couple of days, I've had a brainwave. I have 3 USB ports at the back of my computer, which are all very close together and which I use more or less randomly. I think what's happening is that when I connect the Visor to a different port than last time, it thinks it's a new device. And, very possibly, deletes it from the old port when it installs it to the new port. This explains why I don't have that problem on my work computer, where it stays plugged in all the time. In conclusion, Windows is poo.