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. With ADSL, subscribers can now get up to 6 Mbps of data in one direction, or about 832 kbps or more data in both directions. These rates of expansion enable the expansion of existing access capacity by a factor of about 50 or more. And that too, without the need for new cabling. The ADSL circuit uses an ADSL modem on each end of the twisted-pair telephone line. | 
