Summary: Installed the card and software, worked 36 hrs, then failed. Had to uninstall software and remove-reinsert card, re-install software, worked 24 hrs, then quit. Did this 4 more times, and returned it for a refund.
Summary: I have installed this PCIe card on the older motherboard to make the USB 3.0, 4 channels available. Installation was very easy, it works fine under Windows 7, I keep the USB 3.0 Passport disk permanently connected. I am very satisfied with the VisionTek card.
Summary: Unlike others, mine came with a Molex to SATA power adapter. The driver installed from the CD and my SanDisk Extreme USB-3 thumb drives finally operated at read speeds of 150 Mbs. Then I tried some USB-2 thumb drives. Problems. Formatting would halt before completion with any of the 3 different brands I own. At that point the card would lock up for either USB 2 or 3 thumb drives till I re-booted the system. So I went searching for the latest driver.
Summary: This VisionTek USB 3.0 PCI Express card is a good solution if you need USB 3.0 functionality on an older motherboard, or even if you just need some extra USB ports. It installed easily in my case. The only issue I had was that the 4-pin MOLEX power connector was not attached very securely to the circuit board. It snaps onto the board, and when I tried to connect the power supply to the card, the connector came loose from the card and nearly broke off.
Summary: First of all, the molex power connector is held to the board with two weak little platic clips inserted into holes that are not very secure. With some elbow grease I got the the connector re-positioned, but I could have easily broken the connector right off the board when I plugged in the power. After that the card worked with my USB 3 drive, but only for a bit. It has now stopped working.