A digital subscriber line (ADSL) modem is a device used to connect a computer or router to a telephone line which provides the digital subscriber line service for connectivity to the Internet, which is often called ADSL broadband.
The term ADSL modem is technically used to describe a modem which connects to a single computer, through an Ethernet Port, USB port, or is installed in a computer PCI slot. The more common ADSL router is a standalone device that combines the function of a ADSL modem and a router, and can connect multiple computers through multiple Ethernet ports or an integral wireless access point. Also called a residential gateway, a ADSL router usually manages the connection and sharing of the ADSL service in a home or small office network.
A ADSL router consists of a box which has an RJ11 jack to connect to a standard subscriber telephone line. It has several RJ45 jacks for Ethernet cables to connect it to computers or printers, creating a local network. It usually also has a USB jack which can be used to connect to computers via a USB cable, to allow connection to computers without an Ethernet port. A wireless ADSL router also has antennas to allow it to act as a wireless access point, so computers can connect to it forming a wireless network. Power is usually supplied by a cord from a wall wart transformer.
Coming soon – a resource to suppliers of ADSL Modems in South Africa