USRobotics 56K Pci Express Faxmodem Data: V.92, V.90, V.34, V.32bis, V.32 Data Error Control/Compression: V.44/V.42/V42bis and MNP5 Fax: EIA 578 (Class 1) with V.17, V.29, V.27ter, V.21, Group 3 V.80 video conferencing support 56Kbps Send and receive faxes through your computer while running other applications Permanently store preferred modem default settings Wake-on-ring and Caller ID support RJ11 port