There are three types of ADSL modems. They are the ethernet ADSL modem, the PCI ADSL modem, and the USB ADSL modem. The ethernet ADSL modem can be fed directly into a PC ethernet port or used to add a modem to certain broadband routers. The PCI ADSL modem fits inside the computer. USB ADSL modems are the most popular form of all ADSL modems, and they are designed for connecting individual computers to ADSL lines. The main difference between ADSL and cable is that ADSL uses your existing phone lines, while cable uses dedicated cables laid by a cable company Ð the same ones you can use to receive cable television transmissions. | 
