US Robotics 56K V.92 Low Profile PCI Modem. Modem speed: 56 Kbit/s, Interface: PCI. Data link protocols: V.92, V.90, V.34, V.32bis, V.32, V.22bis, V.22, V.23, V.21. Operating temperature range (T-T): 0 - 50 °C, Operating relative humidity range: 20 - 80 %, Storage temperature range (T-T): -20 - 70 °C. Certification: - FCC - IC (ICES-003/CS-03) - UL/CUL - TBR-21 - EN55022;1998 - EN55024;1998 - EN60950/IEC950