... /Fax modem with USB interface 2.V.90 and V.42/V.42bis/MNPS protocols 3.Use conexant ... Compliant with V.90 and V.42/V.42bis/MNPS protocols3. Compliant with V.17,V.29 and V.27ter Group3 ... V.90, 56KbpsITU T V.34, 33600 to 2400 bpsITU T V.32bis, V.32ITU T V.22bis,V.22ITU T V.23, V.21FAX Mode Capabilities:V.17,V ... .27ter,Group 3, ...