US Robotics 56K Performance Pro Modem Card P/N: USR5610C-VAR-20 Tested Working

3Com Megahertz 56K Cellular Modem PC CARD 3CXM556

US Robotics Megahertz 56k PCMCIA Modem PC Card with XJACK Connector XJ5560

PCI 56K Modem 0637 3COM US Robotics

U.S. Robotics USR5610C 56K PCI Fax Modem Card RJ-11

IBM Model 1560 PCMCIA Data/Fax Modem 56 Kbps V.34 XJACK Connector 04K0054

3Com Megahertz 56K Global Modem (3CCM156B) 56 Kbps - Not tested

US ROBOTICS 3COM 0727 PCI 56K INTERNAL MODEM