IF you are using the USB ports ON the motherboard,
ONE MORE TIME:
The original poster said they are having issues with USB 3.0 on a PCI accessory card that's plugged into their computer.
The motherboard does NOT need to be 3.0 capable to use 3.0 on a PCIe card, that the entire point of a PCIe card
USB is easily deal with by the chipset ON THE CARD.
the same way you can use a PCI-IDE controller on an older computer to run 160gb-500gb IDE drives
on a Pentium3 Motherboard that did not support HDDs with 48 Bit Logical Adressing or SATA drives on a computer made before SATA, or a card that supports SATA 3.0 drives on MoBo's that only natively supported
Or like on my desktop with my eSATA controller card. my "motherboard" supporting eSATA or not is irrelevant .
in point of fact my Motherboard does not support eSATA but my PCIe eSATA controller card does! (it even has two 5V jacks on the back to power the eSATA cards) ,the Silicon Image chipset on the PCIe Controller card deals with it the same way a similar card for USB3.0 would.
Are we clear now?
here is nothing "magical" about USB 3.0, what people are all gaga over
is NATIVE (on-the-motherboard) USB 3.0 that isn't widely available.... yet!
For that the chipset and bios DO need to support it, but that is not the discussion here, the OP is using a PCI-card for his USB 3.0.
Now while it could be argued that there is no DRIVER to support his usb 3.0 PCIe controller CARD that works with the OS used by the orignnal Poster, XP, that is equally unlikely to be the case.
The common PCIe USB 3.0 cards typically use a, NEC chipset and there is Driver support for that chipset not only for XP, but also Windows 2000, as well as 98SE and even Windows ME.
SOME people who have wanted USB 3.0 are all agog with the idea of it directly on the MoBo.
If you aren't so pickey about it or you have an open PCIe slot in your computer you never needed to wait.
Now to the OP:
I said "Specified" which with your information on make/model the manufacturer advertizes:
40MB/s, Write speed 35MB/s.
Which is only a tick faster than many USB 2.0 drives.
the Kingston USB 3.0 32gb is advertized at 80MB/sec. read and 60MB/sec.
but for USB 2.0: 30MB/sec. read and 30MB/sec. write
The Kingston USB 3.0 drive sells for $85, the drive you bought seems to sell for ~$50
I think the issue is the specific USB drive you bought.