PCI usb card not working

[lopdog]

I recently installed a PCI I/O USB controller card (model CPVTUSB20-5) to add USB 2.0 support on an old PIII computer running XP sp2. The card was recognized without problems, and I installed the supplied driver. As far as I can see Windows recognized the card, but when I plug in any USB device (MP3-player, MP4 player and USB Flash drive) nothing happens. No lights on the devices, and no sign from Windows about the connection. I have no idea about what could be wrong, but the same thing happened when I installed a similar PCI-card (Firewire, model CPVT1394-4P) on an AMD Athlon xp2400 with a PCChips E848 motherboard, so maybe I´m doing something wrong.
This is some information on the PIII computer:

CPU Intel Pentium III, 500 MHz (5 x 100)
Motherboard Epox EP-61BXA-M/6ZXB/6ZXM/BX2/BX2P/BX3/BXC-A/BXT/ZXA
Chipset Intel 82440BX/ZX
System memory 128 MB (PC100 SDRAM)
BIOS Award Modular (07/16/99)

 

[raybay]

Are there any flags in the System Hardware Device Manager. There should be quite a list of USB devices at the bottom of the list under Serial Universal Bus Controllers. See if any of those have a yellow or red flag.
Are you using an operating system that required the installation of that disk of drivers?

 

[lopdog]

There are no yellow or red flags in the System Hardware Device Manager, but yes, the list is long. I´m using windows xp sp2, so maybe I didn´t need the drivers, but I was asked for the CD.

 

[Tmagic650]

So update to SP3

 

[lopdog]

I´ll try that, but this card is supposed to support Windows 98SE/ME/2000/NT/XP, so I still find it strange that it´s not working.