US Robotics ISA Dial-Up Modem Card Vintage D381

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

Vintage US Robotics USR Sportster 56k Modem Fax Network ISA Card @MB66

Encore ENF656-GSW-NDPR ISA 56K Fax Modem RJ11 Internal Card

US Robotics USR5610B ISA 56K Fax Modem Card Vintage Internal

USRobotics Sportster 0584 ISA Modem Card 3Com 56K Vintage Hardware

Vintage US Robotics Sportster 33.6K / 56K ISA Internal Modem Card - Retro PC...

Hayes ACC 56K Fax PCI Dial-Up Fax Modem Card V.90 Dual RJ-11 2-Port