The "PCI Soft Data Fax Modem with SmartCP" is a type of modem that connects to a computer's PCI (Peripheral Component Interconnect) slot to provide dial-up fax and data connectivity. It's typically used in older systems or specific use cases where internet access or faxing via a telephone line is required. The "SmartCP" (Smart Compression Processor) is an integrated hardware feature designed to accelerate data compression and reduce transmission errors, improving the performance of fax and data transmission.

This driver allows the operating system to recognize and use the modem hardware to connect to the internet, send/receive faxes, or communicate with other devices over telephone lines.