US Robotics COURIER® Lite 56K* Dial-Up Business Modem - Betterbox
US Robotics Modem 56k "Sportster Flash" - from circa 1995 : r/vintagecomputing
3Com U.S. Robotics 56K Faxmodem with power lead and Serial cable. – Find Control
US Robotics USR3453B Courier 56K Business Modem 64-993453-02
RetroTech Chris on X: "Testing out my "new" US Robotics 56K Faxmodem. Dialed up the Diamond Mine BBS. Sound on if you like modem sounds. https://t.co/4yoKUNi1ji" / X