3Com U.S. Robotics 56K Modem PC Card 3056 3Com USR XJ Vintage Computing

VINTAGE V.92 PCI 56K MODEM Model 1220c

Compaq GVC F-1156IV/R9 ISA 56K Voice Fax Modem Card Vintage

Vintage USRobotics USR5699B 56K PCI Fax Modem Card V.92 Dial-Up RJ11 - untested

HP Internal Fax/Modem Card. 5188-2907 PCI 56K Untested

MODEL: F-1156IV/A2A — a 56K PCI internal dial-up fax/data modem card Untested

PC 56 K Modem Unknown Brand Vintage 2000s

Vikings Components 56K Windows Modem