The HSP56 WDM Device driver typically refers to a modem driver for an older 56K dial-up modem device, often used in computers to connect to the internet via phone lines. The "HSP" stands for Host Signal Processor, which is a technology used in modems to offload some signal processing tasks to the CPU, reducing the need for additional hardware.

This device uses the WDM (Windows Driver Model), which is a driver architecture that ensures compatibility with Windows operating systems. The HSP56 WDM Device driver allows Windows to communicate with the modem, enabling functions like internet dialing and data transmission over a phone line (though dial-up internet is mostly outdated now).