Except that my desk has three USB cords, each with a color-coded label so that I can tell what each one is for. One is seemingly the only one that will charge my e-reader, but only does low speed data transmission so it never really gets used for anything but my e-reader. Another is power only and therefore useful for charging devices without my computer attempting to talk to them. And a third is a proper, modern (ish, I suppose), well-behaved USB 2.0 cable.