Dynamode Internal PCI (Conexant) ADSL Modem . Modem speed: 8000 Kbit/s, Interface: PCI. Upstream data rate: 8 Mbit/s, Downstream data rate: 0.625 Mbit/s. Minimum system requirements: Pentium MMX233 MHz, 32 Mbit.. Operating temperature range (T-T): 0 - 40 °C, Operating relative humidity range: 10 - 90 %, Storage temperature range (T-T): -40 - 65 °C. Certification: FCC 15 B, FCC 68, UL/CUL.