expresscard34 usb3

Dear Forum, i am sorry, maybe this is the wrong forum, but i didn't know where to post this. Situation: I bought a CSL Expresscard offering two USB 3.0 Ports for my old MBP 4,1, running 10.6.8. To use the Ports i installed the USB NEC/Renesas PXHCD-Driver using Multibeast. (Descripton: Enables...

My Computer: MacBook Pro 17" Late 2011 There is literally no documentation of this being done. Is it possible? I have tried various solutions for older operating systems and cards but nothing...The card appears in Mac fine, but the card only supplies power to things plugged in, no data...

My USB3 GMYLE card worked fine in Mountain Lion 10.8, but it's not working any more in Mavericks. I've used the 10.9 Multibeast installer and installed the USB3 drivers, but still no dice. Does anyone have any idea how to fix this, or have another source for drivers that will work?