For 3Com U.S.Robotics 56K PCMCIA Modem Card - Model 3056/3057. Taken from the EnglishUK folder from the installation CD. For Win9x.
Run setup.exe from Disk 1 BEFORE you insert the PCMCIA Card. It will ask for Disk 2. Then it will ask you to insert the Card. Then it may ask for Disk 1 again.