MultiTech Systems 56K Data/Fax Modem v90 Model MT5600ZDX USED | eBay
V.90 Modem
Amazon.com: USB 56K Voice Fax Data External V.90 V.92 Modem With Dual Ports, Compatible With Windows 98SE/2000/ME/XP/Vista/Win 7 and Support Auto-Dial, Tone and Pulse Dialing, Auto Answer, Auto Retrain (Black Color) :
MultiTech MT5600ZDX 56K Data/Fax V90 Multi Modem – JS Medical Equipment