This US Robotics 5686G Data/Fax Modem (USR5686G) is a serial controller faxmodem for various operating systems.
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Compatible with Server 2012, Server 2011, Windows 8 64 bit, Win 8, Windows 7 64 bit, Win 7, Server 2008 64 bit, Server 2008, Vista 64 bit, Vista, Server 2003 64 bit, Server 2003, XP 64 bit, XP, NT 4.0, 2000, ME, 98, 95, 3.1, Linux and DOSOperating temperature: 0 to 50 degrees CNon-operating temperature: -20 to 70 degrees C