Alternatively referred to as a surge suppressor, a surge protector is a plug-in device that is designed to help protect the computer from surges and spikes. The picture shows a Belkin power strip and surge protector. As can be seen, this power strip not only helps protect the devices connected to it, but also allows eight additional devices to be connected to one outlet.
While it is important to protect your computer and computer peripherals, it is also important to protect your computer modem and network card. Surges not only have the capability of traveling over the power lines, they can come over any line that's coming from outside your home or business.