What is a cable modem?
A cable modem is an external device that hooks up to your computer. Instead of getting an internet connection through your telephone wire, you get a connection through your cable network (the same place your cable TV Connection comes from). Cable modems translate radio frequency (RF) signals to and from the cable plant into Internet Protocol (IP), the communications protocol spoken by all computers connected to the Internet. To learn more about cable modems, visit www.cablelabs.
A cable modem is a device that connects your computer to your local cable TV line and allows you to access the Internet at very high speeds. Since there is not a telephone line involved (with the exception of 1-Way cable modems, see question #7 below), a cable modem is “Always on,” which means that the Internet is always available to you.
A cable modem is a small box that connects your computer to the Internet via your local cable television provider. A cable modem has two connections, one that leads to the cable lines outside your home and an Ethernet connection to your computer. A one-way cable modem will also have a telephone line connection.