The INF file has been tested and is designed for the following U.S. Robotics modems
Copy this Universal INF file onto a blank 3.5-inch disk. When prompted for the driver during the installation, select "Have Disk" and direct the installation to the 3.5-inch drive. Select mdmusr01.inf from the 3.5-inch disk and follow the prompts to finish the installation.
mdmusr01.inf. File size 59385 bytes. File data 06-02-00.