HELP! I have a Lenovo ThinkPad SL410 Windows 7; my issue is that if I insert a USB flash drive everything works fine; HOWEVER, when I insert an external hard drive it does nothing! It is NOT the disk management setting. I have tried connecting a powered USB hub and it works, hence the ports work IF it is given a power boost but I want to be able to use any of my external hard drives without having to use a USB hub, please help with solution, is there a specific driver? Is there something I might be missing? Thank you all for your help!