I have a Digital Storm desktop with an EVGA X58 SLI LE motherboard, running Windows 7 Pro x64. I recently installed a PCIe to USB 3.0 card in one of the available slots in the computer, but naturally Windows can't find a driver for it by itself. The card didn't include a driver CD, and I'm not sure which version of the driver I should use. I've tried several from both NEC and Renesas, and the card seems to work sometimes.
I got the card because I have a 3TB WD My Book Essential with a 3.0 cable, and I wanted to take advantage of the faster speeds. Whenever I plug the drive into a 2.0 port, everything is fine. But when I attach it to the USB 3.0 port, the results are sporadic. Sometimes it doesn't recognize the drive at all and nothing happens, or I get the message, "This device will perform faster if plugged into a USB Superspeed port." It will work when that message comes up, but I'm not sure if it is transferring at 2.0 or 3.0 speeds.
I have checked to ensure that 3.0 is enabled in the BIOS, and I've connected the 4-pin Molex connector to the card when using any device that has its own power supply, like my external drive.