An ethernet switch that has the capability to send power as well as data over a network is termed a Power over ethernet Switch. This prevents the need for a seperate power supply for your end point devices. The decrease in cables makes keeping your system tidy a fair bit easier.
The Power over ethernet switch is normally used with devices like IP surveillance devices and VOIP phones. The models for small business range from 4 to forty eight port poe switch with the large business models having between 24 and 96 ports. Whatever the size of your business there is a poe switch to suit your needs.
They are a very functional networking device and can be bought online. If you are likely to expand your system, always ensure that the unit you buy has some growth potential built into it.