A poe switch device can send power and also information over a network through ethernet cables. You no longer need to provide an additional power unit for your end point devices. The reduction in cables is always a good thing as jumbled cables are a housekeeping nightmare.
The Power over ethernet switch is commonly utilised with devices like IP surveillance devices and VOIP phones. A larger business may use a poe switch with 24 to 96 ports, with the small business possibly only using a four to 48 port unit.
These extremely functional network accessories can be bought on the internet fairly inexpensively for the small units. If you are likely to expand your system, always ensure that the unit you buy has some enlargement potential built into it.