US Robotics 56K V.92 Internal Voice Faxmodem, DK. Modem speed: 56 Kbit/s, Interface: PCI, Form factor: Plug-in. Data link protocols: V.92, V.90, V.34, V.80, V.42/MNP2, V.42bis/MNP5/V.44. Minimum processor: Pentium 133 MHz, Minimum RAM: 64 MB. Operating temperature range (T-T): 0 - 50 °C, Operating relative humidity range: 20 - 80 %, Storage temperature range (T-T): -20 - 70 °C. Package dimensions (WxDxH): 241 x 148 x 67 mm, Package weight: 360 g