1.56k Data/Fax modem with USB interface 2.V.90 and ... .42bis/MNPS protocols 3.Use conexant chipset ZBT-UM03B is 56k Data/Fax soft Modem, supports ITU T V.92. It ... , Windows NT, Windows 2000 Windows XP,VIST,WIN7,Linux. 1. 56k Data/Fax modem with USB interface2. Compliant with V.90 ... , Windows NT, Windows 2000 Windows XP,VIST,WIN7 and Linux 56k Data/Fax soft Modem