Feature :

1 usb port and 1 phone port
56K Data/Fax modem with USB interface 
Compliant with V.90,and V.42/V.42bis/MNP5 protocols 
Compliant with V.17,V.29 and V.27ter Group3 fax protocols 
Up to 56K data download,48K data upload,and 14.4K fax communication 
Provide Quick Connect and Modem-on-Hold features 
Support Auto-Dial,Tone and pulase dialing,Auto answer,Auto retrain 
Support Caller ID and distinctive ring detect,Auto format/speed sensing DataData/Fax/Voice call discrimination, Single configuration profile stored in host, call forward/fallback 
Support Windows 98SE/2000/ME/XP/VISTA 
High performance, and low cost 
Small size, for Notebook and Desk Top PC use 
Compatibility: AT and extended AT command set compatible.

Standard:

Communication protocol: ITU-TV.92 , V.90 , V.34 , V.32bis , V.32 , V.22bis , V.22 , V.23 , V.21 , Bell212A , 103
Fax protocol: V.17, V.29, V.27terandV.21Channel2 fax protocol, fax speed up to 14400bps
Data error correct: V.42
Operating temperature 0°C to 40°C
Storage temperature -40°Cto 70°C
Operating Humidity 10% to 90% RH no condensing
Storage Humidity 5% to 90%RH no condensing