Model: U.S. Robotics 56K Voice Win
Operating System: Windows 95 & Windows 98 (Note: might work with other versions of this os.)
I found this driver at 3com oem file direvers. And if you have trien the drivers for 3Com/U.S. Robotics 56K Voice Internal PCI F/M/V/J and they didinīt work try this ones. both modems have the same chipset.