US Robotics External Sportster 56K Fax Modem V.90 | eBay
USRobotics - Wikipedia
Amazon.com: U.S. Robotics USR5637 56K USB Controller Dial-Up External Fax Modem with Voice : Electronics
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
The Gadget We Miss: The US Robotics Courier Modem | by Richard Baguley | People & Gadgets | Medium
US Robotics Modems
US ROBOTICS 80-000698-12 COURIER I-MODEM ISDN WITH V.EVERYTHING CJE-0313 NO AC | eBay