The Motorola SM56 USB Data Fax Modem is a USB-based external modem used for dial-up internet connectivity and faxing. This device allows users to connect to the internet via a telephone line, providing an alternative to broadband connections, especially in areas with limited access to high-speed internet. The Motorola SM56 USB Data Fax Modem Windows driver is a software package that enables your Windows operating system to communicate with the modem and make use of its features, such as dialing, sending faxes, and internet access.