I had no trouble identifying most of the drivers on the card based on the folder names and file names, but none of the folders matched the folder name that the seller's listing said contained the drivers and none of the drivers on the disc matched the card. It had lots of drivers for lots of different cards, but none of them were the right drivers for this card.

The card came with a mini-CD that was supposed to have the drivers. Neither the envelope or the box showed any obvious damage, but when I opened the box I found that the bracket was slightly bent - I had no trouble straightening it (the metal is both thin and a bit soft). When the card arrived it was in a pretty sturdy little box inside an envelope. So, I didn't need to choose USB 3.0, but here was a 4-port USB 3.0 card selling for less than many 4-port USB 2 cards, that made the choice easy. Most of my USB devices stay plugged in all the time, so adding four more USB ports on the back of the computer seemed like a good idea (especially since I didn't have an empty drive bay at the front to use for the USB ports). I didn't but the card to get faster transfer speed - I just needed more USB ports without the bother of yet another USB Hub. My desktop had a mix of USB 2.0 and original USB ports, and I never bothered paying much attention to which were which, although Windows would nag me with the useless 'This device can perform faster' popup if I plugged a USB 2 or 3 capable device into one of the legacy USB ports. I have not bothered trying to test the transfer speed.

The Protronix 4-port USB 3.0 PCIe card works.

Usb 3 card 4 port