I have a 2tb Iomega Prestige USB 3.0 external drive that has been working flawlessly for 4 years with the 3.0 cable connected up to a 2.0 port in a generic desktop under Windows 7 Ultimate. I just got a Lenovo Thinkpad T450s with Windows 8.1 that only has 3.0 USB ports and the Iomega fails just...