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Cable modems Cable is another solution for small offices and home users to have high speed Internet access to their computers. Cable companies originally designed their system to deliver broadcast television signals efficiently to subscribers' homes. Traditional coaxial cable systems typically operate with 330 MHz or 450 MHz of capacity, whereas modern hybrid fiber/coax (HFC) systems are expanded to 750 MHz or more. http://www.cabledatacomnews.com/cmic/cmic1.html