As far as I know, there is absolutely no difference between a USB 1 and a = 2 cable. Each of the machines I use has its own USB cable that stays with = that machine, and I routinely use both USB 1 and USB 2 devices on each of = the machines with no problem at all. Now, just today, I did notice that the cable on my main machine at work = was not working with an external hard drive mp3 player device, and it = turned out to be the length of the cable that mattered. It was a 6 foot = cable. Oddly enough, I have two of these external hard drive mp3 player = devices, an Archos and a Napster, and it only mattered with the Napster = device. =20