hello, i just purchased a USB 2.0 PCI card, and i put it in my computer, and tried it with a USB 1.0 device, and i got nothing, i'm pretty sure it doesn't pick it up in the profiler. anyways, post your suggestions
Unless it's got an NEC chipset on it it probably won't work without additional drivers. AFAIK Mac OS X only has the drivers for the NEC chipsets built-in to the OS.