When ever I plug it into my vista machine downstairs on the front two ports vista doesn't see it, it won't even show in my computer, but in the back ports it shows but not properly it jus shows a the pendrive as being empty. But When i plug it into my windows xp computer upstairs it reads the drive fine. I know it can't be nothing to do with my computer downstairs because i use the front ports for my ipod and phone and they work fine. So what gives.