I have a Inspiron 600m laptop computer that is running on windows XP. I recently bought a 4g flash drive that my computer will not recognize, it keeps asking for the software. I read in another article that I may need a powered USB hub for the flash drive to work. I bought a powered USB hub and my computer will not recognize the powered USB either. Both of these devices work on my desktop computer so they do function properly. My computer will recognize my external hard drive, my camera, my mouse, it just will not work with the flash drive or USB hub.