This driver is used for the Practical Peripherals Windows modem model# HY-5614WM8. Other numbers located on this modem are PM56K HC & 8601US. This driver was found at the following URL windrivers.com/company/practical/56k.htm. This was a tough one to find. Hope you can use. Double click it to unzip the self-extracting files. I just let my PC detect the modem, and then pointed to the path of the extracted files to let windows find the .inf file. Good Luck!