XStreama FaxModem 33600 External Modem & Fax | A1 Used Computer Systems – Computer Parts, Repair Services
Ven-Tel 2400 External Modem (Serial) – Apple Rescue of Denver
Hayes 3124US SMARTModem 2400 Baud External Modem
Data Comm DL-56 56 Kbps External Modem w/ AC Adapter | RecycledGoods.com
Microcom QX/12K External Modem 19VAC .80A 60Hz - No Cable Included | RecycledGoods.com
Amazon.com: Fax Modem, Dual Port USB2.0 56K External Modem Driver, Plug and Play USB Modem, Standard and Expanded at Command Set Compatibility : Electronics
Definition of external modem | PCMag
Bocamodem 2400bps External Modem with AC Adapter, M0024E, USED - Powers on | eBay