3Com US Robotics 56K Modem PC Card - Model 3056

3Com US ROBOTICS 56K V.90 3057 PCMCIA MODEM PC CARD

3Com US Robotics 3CP5699A 56K PCI Fax Modem Card RJ11 Line Phone

U.S. Robotics USR5610B 56K PCI Fax Modem Card 3Com Internal Dial-Up

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

3Com U.S.Robotics 56K Modem PC Card MOD 3056

US Robotics Sportster ISA 56K Fax Modem DSP Hardware Vintage USR

US Robotics USR5610B ISA 56K Fax Modem Card Vintage Internal