This is a Generic Windows 9x driver for Conexant HCF PCI modems. I tried every Amquest driver for my AM56HCFSP-A modem already on driverguide and none worked for me. This one does. The modem has a Conexant Chip on it, a lot of the feedback on the other drivers mention that they are for Rockwell modems. Anyway, if the others don't work for you, give this one a shot.