I have a couple of OptiPlex 745 in the DesktopFF and I want to add a USB 3.0 controller. I want to be able to use a USB 3.0 Blu-Ray writer and external USB 3.0 drives at the highest possible transfer speeds. From what I see, the only way to do this on the 745 is to use the PCI-Express slot. Is this feasible on this machine - can the power supply handle it? I was looking at adding a card like this: http://www.amazon.com/Inateck-Express-Connector-Controller-Internal/dp/B00FPIMJEW/ref=sr_1_13?s=electronics&ie=UTF8&qid=1409930144&sr=1-13&keywords=usb+3.0+pci-e+card