US Robotics USR 56K PN 3CP2976-OEM 56 Kbps PCI Analog Speaker Telephone Modem

US Robotics USR5638 Fax Modem 56 Kbps V.92 PCI-Express

US Robotics USR5638 Fax Modem 56 Kbps V.92 PCI-Express LOW PROFILE BRACKET

NEW 3Com US Robotics 56K PCI Modem 3CP2976-OEM-50 NEC PC-98 PC98 CPCI Vintage

3Com US Robotics 56K Dial-Up Fax Modem Card PCI 3CP2976 USR 0727

3COM US Robotics 3CP2976-OEM-50 0727 56K PCI Modem 1.012.0727-G

US Robotics 0584 56K PCI Voice Fax Modem Card Internal USR Vintage

US Robotics USR5699B 56K V.92 Internal PCI Fax Modem Used Not Tested