USRobotics 5610B Modem Card USR5610B

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

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US Robotics - 56k Pro Modem PCI Card - P/N : 64-005610-02R

3Com 0637 US Robotics PCI 56K Modem Card (3C0426297400-83010) "P6B"