Amazon.com: US Robotics USR courier 56k v90 v92 external business fax/modem rs-232 rohs USR3453C : Electronics
Amazon.com: StarTech.com USB 2.0 Fax Modem - 56K External Hardware Dial Up V.92 Modem/ Dongle/Adapter - Computer/Laptop Fax Modem - USB to Telephone Jack - USB Data Modem - Network Fax/CMR/POS (USB56KEMH2) :
TP-Link TM-IP5600 Internal 56K Modem Data and Fax PCI card, 19,00 €
USB 56K External Dial Up Fax Data Modem V.90 V.92 Win7 32/64 Bit XP
US Robotics V.92 56k Fax Modem Model 5686 for sale online | eBay