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This review is from: Koutech 4-Port SuperSpeed USB 3.0 PCI Add-On Card Model IO-PU430
Pros: 4 extra usb 3.0 ports! Fits in a small form factor case and includes half height adapter plate. NEC chip reliability.
Cons: Not true usb 3.0 speed due to the limitations of the PCI bus itself(so not really a con)
Other Thoughts: The PCI bus can only transfer data at 1.5gbps max. and that depends on what flavor of PCI is on your mobo. So don't expect to get 5gbps speed from this card. I use this with the Buffalo turbo pc and turbo copy with my 1TB external usb 2.0 and 3.0 hard drives and my data transfer speed has more than doubled since installing this card. In order to install this card correctly in windows XP do not let windows install the driver automatically! Instead insert the cd and manually navigate to the USB 3.0 host folder, then open the NEC folder and double click the installer program. Restart the computer and you should be good to go.READ FULL REVIEW