Lenovo V.90 Data/Fax Soft Modem. Modem speed: 56 Kbit/s, Interface: PCI, Form factor: Plug-in. Maximum fax transfer rate: 14.4 Kb/sec. Data link protocols: ITU V.90, ITU V.17, k56Flex. Minimum processor: Intel Pentium 750 MHz. Dimensions (WxDxH): 21 x 122.5 x 64.5 mm