USR - 56K Analogico 56K Modem: USR5686G-PRO Courier® Lite 56K* Business Modem
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Multitech Systems MT5634ZBA 56Kbps Data/Fax Multi Modem w/ Adapter | eBay
56 KBPS V92 USB MODEM-FAX
56k Modem Remix (Dial-Up Sound) - YouTube
US Robotics 56K Faxmodem USB USR5633B B&H Photo Video
USR025630G, US Robotics USR025630G, External Faxmodem, 56Kbps, 4 LEDs, 1xRJ-11, RS232/V.24 - DB25, 200g, white | EET
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Micro Center - Zoom Telephonics 56K V.92 External Modem 3049-00-04CG
RetroTech Chris on Twitter: "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" / Twitter