I have an Iomega External harddrive that says that it is not plugged into a highspeed hub and will function at a reduced rate. Problem is…it is plugged into a highspeed port. I have tried this HD in 3 different computer all with USB 2.0 and all three say the same thing. It seems the enclosure knows it is USB 2.0 but XP seems to think the USB ports are 1.1 when this drive is plugged in. All of my other devices including flash drives and my Maxtor External drives work fine.