How do I know what my pci slots are? I bought a hi-speed 2.0 usb card, and it still says I can go faster…?

Does that mean that the PCI slot is too weak to handle hi-speed usb? I did load the drivers cd. The problem is I have 2.0 slots installed on the motherboard. I installed hi-speed 2.0. But when I hook up my external hard drive, it says that it can go faster I just need to [...] http://bit.ly/m6my7E