I really appreciate the info. Yeah the thing is that I am using external power for this hub and I am supplying it with the exact power it says that it needs. The hub calls for 5V 3A and my power supply can do 3.6 - 6.7V at 3A so that definitely covers 5V 3A. Maybe it's because my power supply is variable voltage? I could see this type of thing happening if the voltage on the power supply dips lower than 5 V for some reason. Also can you tell me more about peripheral performance with usb hubs? I had hoped I wouldn't really be losing any measurable amount of performance.